Fragment底部導航欄的實現

原創 mpt_android 2020-06-27 14:35

1.要實現的效果圖以及工程目錄結構：

先看看效果圖吧：

接着看看我們的工程的目錄結構：

2.實現流程：

Step 1：寫下底部選項的一些資源文件

我們從圖上可以看到，我們底部的每一項點擊的時候都有不同的效果是吧！ 
我們是通過是否selected來判定的！我們要寫的資源文件有：首先是圖片，然後是文字，接着是背景！

圖片Drawable資源：tab_menu_channel.xml

<code class="language-XML hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:drawable</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@mipmap/tab_channel_pressed"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:state_selected</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> /></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:drawable</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@mipmap/tab_channel_normal"</span> /></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span>></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

其他三個照葫蘆畫瓢！

文字資源：tab_menu_text.xml

<code class="language-XML hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:color</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@color/text_yellow"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:state_selected</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> /></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:color</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@color/text_gray"</span> /></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span>></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

背景資源：tab_menu_bg.xml

<code class="language-XML hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:state_selected</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span>></span>
        <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">shape</span>></span>
            <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">solid</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:color</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"#FFC4C4C4"</span> /></span>
        <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">shape</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span>></span>
        <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">shape</span>></span>
            <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">solid</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:color</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@color/transparent"</span> /></span>
        <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">shape</span>></span>
    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">item</span>></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">selector</span>></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li></ul>

Step 2：編寫我們的Activity佈局

activity_main.xml:

<code class="language-XML hljs perl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><RelativeLayout xmlns:android=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/apk/res/android"</span>
    xmlns:tools=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"http://schemas.android.com/tools"</span>
    android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
    android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
    tools:context=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">".MainActivity"</span>>

    <RelativeLayout
        android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/ly_top_bar"</span>
        android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
        android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"48dp"</span>
        android:background=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@color</span>/bg_topbar"</span>>

        <TextView
            android:id=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/txt_topbar"</span>
            android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
            android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
            android:layout_centerInParent=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>
            android:gravity=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"center"</span>
            android:textSize=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"18sp"</span>
            android:textColor=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@color</span>/text_topbar"</span>
            android:text=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"信息"</span>/>


        <View
            android:layout_width=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"match_parent"</span>
            android:layout_height=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"2px"</span>
            android:background=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@color</span>/div_white"</span>
            android:layout_alignParentBottom=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"true"</span>/>

    <<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">/RelativeLayout>



    <LinearLayout
        android:id="@+id/ly</span>_tab_bar<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_width="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_height="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">56</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_alignParentBottom="</span>true<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@color</span>/bg_white<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:orientation="</span>horizontal<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">">

        <TextView
            android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/txt_channel<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_width="</span>0dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_height="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_weight="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_bg<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawablePadding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawableTop="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_channel<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:gravity="</span>center<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:padding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:text="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@string</span>/tab_menu_alert<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textColor="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_text<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textSize="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>sp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" />

        <TextView
            android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/txt_message<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_width="</span>0dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_height="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_weight="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_bg<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawablePadding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawableTop="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_message<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:gravity="</span>center<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:padding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:text="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@string</span>/tab_menu_profile<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textColor="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_text<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textSize="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>sp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" />

        <TextView
            android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/txt_better<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_width="</span>0dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_height="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_weight="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_bg<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawablePadding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawableTop="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_better<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:gravity="</span>center<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:padding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:text="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@string</span>/tab_menu_pay<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textColor="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_text<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textSize="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>sp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" />

        <TextView
            android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/txt_setting<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_width="</span>0dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_height="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:layout_weight="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span><span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_bg<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawablePadding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:drawableTop="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_setting<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:gravity="</span>center<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:padding="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>dp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:text="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@string</span>/tab_menu_setting<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textColor="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@drawable</span>/tab_menu_text<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
            android:textSize="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>sp<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/>

    </LinearLayout>

    <View
        android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/div_tab_bar<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_width="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_height="</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>px<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:background="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@color</span>/div_white<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_above="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@id</span>/ly_tab_bar<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"/>


    <FrameLayout
        android:layout_width="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_height="</span>match_parent<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_below="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@id</span>/ly_top_bar<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:layout_above="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@id</span>/div_tab_bar<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"
        android:id="</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@+</span>id/ly_content<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">">

    </FrameLayout>

</RelativeLayout>
</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li></ul>

代碼解析：

首先定義頂部標題欄的樣式，48dp的LinearLayout中間加上一個TextView作爲標題！ 
接着定義一個大小爲56dp的LinerLayout對其底部，在這個裏面加入四個TextView，比例1:1:1:1， 
並且設置相關屬性，接着在這個LinearLayout上加一條線段！ 
最後以標題欄和底部導航欄爲邊界，寫一個FrameLayout，寬高match_parent，用做Fragment的容器！

PS：這裏四個TextView屬性是重複的，你也可以自行抽取出來，編寫一個style，設置下~

Step 3：隱藏頂部導航欄

意外發現以前的在Activity中調用requestWindowFeature(Window.FEATURE_NO_TITLE);可以隱藏手機 
自帶頂部導航欄，但是寫demo時候發現會報錯，即使這句話寫在了setContentView()之前！可能是因爲 
繼承的是AppCompatActivity而非Activity類！ 
當然以前的getSupportActionbar().hide()隱藏掉Actionbar，但是他還是會在界面上！ 
最後還有一種方法直接在AndroidManifest.xml中爲Application設置這個Theme：

接着AndroidManifest.xml設置下theme屬性：

<code class="language-XML hljs perl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">android:theme=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@style</span>/Theme.AppCompat.NoActionBar"</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>

PS：上述“良心代碼”由好程序員曹神贊助~

Step 4：創建一個Fragment的簡單佈局與類：

fg_content.xml:

<code class="language-XML hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span>
<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">LinearLayout</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span>
    <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:orientation</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"vertical"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span>
    <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span>
    <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:background</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@color/bg_white"</span>></span>

    <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">TextView
</span>        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/txt_content"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:gravity</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"center"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"呵呵"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:textColor</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@color/text_yellow"</span>
        <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:textSize</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"20sp"</span>/></span>

<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">LinearLayout</span>></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul>

MyFragment.java:

<code class="language-Java hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**
 * Created by Coder-pig on 2015/8/28 0028.
 */</span>
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MyFragment</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">Fragment</span> {</span>

    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> String content;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-title" style="box-sizing: border-box;">MyFragment</span>(String content) {
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>.content = content;
    }

    <span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> View <span class="hljs-title" style="box-sizing: border-box;">onCreateView</span>(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fg_content,container,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);
        TextView txt_content = (TextView) view.findViewById(R.id.txt_content);
        txt_content.setText(content);
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> view;
    }
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li></ul>

代碼解析：

就是簡單的重寫了一個onCreateView()方法，其他方法可以按需重寫!

Step 5：編寫MainActivity.java

先說說我們要考慮的一些關鍵問題：

  • Fragment什麼時候初始化和add到容器中？什麼時候hide和show？
  • 如何讓TextView被選中？選中一個TextView後，要做一些什麼操作？
  • 剛進入MainActivity怎麼樣讓一個TextView處於Selected的狀態？

嗯，接下來一一解答上面這些問題：

  • 我們選中TextView後對對應的Fragment進行判空，如果爲空，初始化，並添加到容器中； 
    而hide的話，我們定義一個方法hide所有的Fragment，每次觸發點擊事件就先調用這個hideAll方法， 
    講所有Fragment隱藏起來，然後如果TextView對應的Fragment不爲空，我們就將這個Fragment顯示出來；
  • 這個我們通過點擊事件來實現，點擊TextView後先重置所有TextView的選中狀態爲false，然後設置點擊的 
    TextView的選中狀態爲true；
  • 這個更簡單，我們是通過點擊事件來設置選中的，那麼在onCreate()方法里加個觸發點擊事件的 
    方法不就可以了嘛~ txt_channel.performClick();

邏輯都弄懂了，直接上代碼咯：

MainActivity.java:

<code class="language-Java hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**
 * Created by Coder-pig on 2015/8/28 0028.
 */</span>
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">MainActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">extends</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">AppCompatActivity</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">implements</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">View</span>.<span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">OnClickListener</span>{</span>

    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//UI Object</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> TextView txt_topbar;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> TextView txt_channel;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> TextView txt_message;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> TextView txt_better;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> TextView txt_setting;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> FrameLayout ly_content;

    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//Fragment Object</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> MyFragment fg1,fg2,fg3,fg4;
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> FragmentManager fManager;

    <span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">protected</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onCreate</span>(Bundle savedInstanceState) {
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">super</span>.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        fManager = getFragmentManager();
        bindViews();
        txt_channel.performClick();   <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//模擬一次點擊，既進去後選擇第一項</span>
    }

    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//UI組件初始化與事件綁定</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">bindViews</span>() {
        txt_topbar = (TextView) findViewById(R.id.txt_topbar);
        txt_channel = (TextView) findViewById(R.id.txt_channel);
        txt_message = (TextView) findViewById(R.id.txt_message);
        txt_better = (TextView) findViewById(R.id.txt_better);
        txt_setting = (TextView) findViewById(R.id.txt_setting);
        ly_content = (FrameLayout) findViewById(R.id.ly_content);

        txt_channel.setOnClickListener(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);
        txt_message.setOnClickListener(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);
        txt_better.setOnClickListener(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);
        txt_setting.setOnClickListener(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">this</span>);
    }

    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//重置所有文本的選中狀態</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">setSelected</span>(){
        txt_channel.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);
        txt_message.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);
        txt_better.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);
        txt_setting.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">false</span>);
    }

    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//隱藏所有Fragment</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">hideAllFragment</span>(FragmentTransaction fragmentTransaction){
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg1 != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>)fragmentTransaction.hide(fg1);
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg2 != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>)fragmentTransaction.hide(fg2);
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg3 != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>)fragmentTransaction.hide(fg3);
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg4 != <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>)fragmentTransaction.hide(fg4);
    }


    <span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span>
    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">onClick</span>(View v) {
        FragmentTransaction fTransaction = fManager.beginTransaction();
        hideAllFragment(fTransaction);
        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">switch</span> (v.getId()){
            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> R.id.txt_channel:
                setSelected();
                txt_channel.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg1 == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>){
                    fg1 = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> MyFragment(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"第一個Fragment"</span>);
                    fTransaction.add(R.id.ly_content,fg1);
                }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{
                    fTransaction.show(fg1);
                }
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span>;
            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> R.id.txt_message:
                setSelected();
                txt_message.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg2 == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>){
                    fg2 = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> MyFragment(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"第二個Fragment"</span>);
                    fTransaction.add(R.id.ly_content,fg2);
                }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{
                    fTransaction.show(fg2);
                }
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span>;
            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> R.id.txt_better:
                setSelected();
                txt_better.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg3 == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>){
                    fg3 = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> MyFragment(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"第三個Fragment"</span>);
                    fTransaction.add(R.id.ly_content,fg3);
                }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{
                    fTransaction.show(fg3);
                }
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span>;
            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">case</span> R.id.txt_setting:
                setSelected();
                txt_setting.setSelected(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(fg4 == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>){
                    fg4 = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> MyFragment(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"第四個Fragment"</span>);
                    fTransaction.add(R.id.ly_content,fg4);
                }<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{
                    fTransaction.show(fg4);
                }
                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span>;
        }
        fTransaction.commit();
    }
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li></ul>

3.代碼下載：

FragmentDemo.zip：http://pan.baidu.com/s/1jGivCe6 

發表評論
所有評論
還沒有人評論，想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章

將Android Studio工程導入到eclipse中

導讀 在實際開發中,有些同學的公司開發項目可能還在用eclipse,但是GitHub上面下載的開源框架絕大部分都是用Android Studio開發的,那麼如果我們想把這個開源框架導入到eclipse中,該怎麼做呢?? 下面我們以

默尛铭 2020-07-08 10:35:36

如何導入下載的jar、so包和library

下載了jar包如何導入 將下載好的jar包放入工程的app— src— main— libs文件夾下 右鍵它選擇Add As Library 選擇要導入到哪個model裏面，如果工程中只有一個app，則只有一個選項 第三方s

金海晗 2020-07-03 20:27:37

手把手教你實現一個安卓環形進度條

背景： 最近做了個如圖所示環形進度條，下面來記錄一下實現過程，廢話不多說，先上圖 除了圖中所示的樣子之外，還實現了進度自動增長，點擊復位 所用到的知識 基礎的安卓view的繪製 基礎的安卓屬性動畫 怎麼做： 首先，這個進度

皇甫淮智 2020-07-02 23:47:39

手把手教你實現一個通用的安卓權限請求工具

背景： 衆所周知，安卓6.0以後有了權限動態申請機制，很多功能需要在運行時申請權限，下面就來一起實現一個申請運行時權限的工具類吧 前提： 首先，動態申請權限一般的寫法是在activity裏調用“ActivityCompat.req

皇甫淮智 2020-07-02 22:49:22

對listview和recyclerview條目的展示和退出進行監聽

背景： 最近碰到一個需求，要統計列表中每個條目的總展示時長和單次最大展示時常，然後就在網上借鑑了不少代碼，整了個這玩意兒。 怎麼做： 首先，需要實現對列表條目展示和退出的監聽，在某個條目進入屏幕的時候記錄一個時間戳，退出的時候再

皇甫淮智 2020-07-02 22:49:22

常用但是容易忘的git命令

//刪除遠程分支 git push origin --delete dev //刪除本地分支 git branch -d dev //將本地分支與遠程分支關聯 git remote add origin [email protected]

皇甫淮智 2020-07-02 22:49:22

深入分析RecyclerView源碼——佈局流程（上）

開篇簡述 RecyclerView的源碼數量真的是太多啦，第一次解析打算按照分析view的標準方法，先從measure、layout和draw三大流程入手。本篇文章主要着眼於最核心的measure和layout過程。分析後會發現Recyc

zhaoqinmuxue 2020-07-02 08:26:58

深入分析RecyclerView源碼——佈局流程（下）

接着上篇繼續分析佈局流程。 onLayoutChildren 所取onLayoutChildren是LinearLayoutManager的方法，RecyclerView把具體的佈局交給了佈局管理器去做，精簡後的代碼主要做了三件事： 一、

zhaoqinmuxue 2020-07-02 08:26:58

簡單易懂ppi和dpi的本質和由來

       今天學習安卓的時候又遇到這個問題，第一次認真搜索了一下，看了很多博文說的不太全面或是沒有講到本質，我只是簡單說一下對於電子屏幕來說ppi和dpi的區別。 一、PPI和DPI的概念         先說普通用戶接觸較多的ppi

zhaoqinmuxue 2020-07-02 08:26:58

2016-3-5

活動的生命週期    Android使用任務（Task）來管理活動，一個任務就是存放在返回棧中的活動的集合。棧是後進先出的結構，系統總是顯示位於棧頂的活動，當一個活動調用finish時就會出棧。   活動的狀態    1、運行狀態：位於棧

acelove40 2020-07-01 21:44:45

安卓問題報告小記(一)： Activity not started, its current task has been brought to the front

在修改了已有的工程後，運行模擬器，可能總會出現這樣的問題報告： ActivityManager: Warning: Activity not started, its current task has been brought to th

Lamba 2020-06-26 04:28:51

安卓雜記（二）利用FrameLayout疊加多種view的方法

一.FrameLayout介紹： FrameLayout是五大布局中最簡單的一個佈局，在這個佈局中，整個界面被當成一塊空白備用區域，所有的子元素都不能被指定放置的位置，它們統統放於這塊區域的左上角，並且後面的子元素直接覆蓋在前面的子元素之

Lamba 2020-06-26 04:28:51

安卓雜記（五）：Eclipse如何導出android項目並在手機上進行安裝

必要條件: 1.手機設置:設置->安全和隱私->未知來源:允許安裝不是從電子市場獲取的應用程序 2.Eclipse項目導出分爲:簽名程序包(Export signed Application Package)和未簽名程序包(Export

Lamba 2020-06-26 04:28:51

安卓作業----慕課移動互聯網作業7使用逆波蘭式實現處理加減乘除複合運算的計算器

這是中國大學慕課移動終端應用開發的網課作業7，我會持續更新我的作業，如果有需要關注一下吧 說明 1.本計算器利用逆波蘭式能實現加減乘除複合運算 2.第一個數字輸入小數點能自動補全爲 0. 3.能檢測重複輸入小數點情況 4.能檢測式

大青儿 2020-06-23 09:58:06

安卓練習----安卓android實現一個石頭剪刀布小遊戲

此博客用安卓android實現了一個簡單的剪刀石頭布小遊戲。能完成人機對抗。 說明 這是我老師佈置的一道課內作業，圖片資源由老師提供，本篇博客僅展示代碼部分，圖片資源由於太多且沒有那麼必要，我就不在此展示。如需要完整代碼以及圖片資

大青儿 2020-06-23 09:58:03