View
創建 colors.xml 文件定義兩個顏色
1. <resources>
2. <color name="blue_pressed">@android:color/holo_blue_dark</color>
3. <color name="blue_normal">@android:color/holo_blue_light</color>
4. </resources>
我們這裏使用android的 HOLO 色調:
1. <!-- A dark Holo shade of blue -->
2. <color name="holo_blue_dark">#ff0099cc</color>
3. <!-- A light Holo shade of blue -->
4. <color name="holo_blue_light">#ff33b5e5</color>
創建 dimen.xml 文件，定義圓角值和陰影高度，見下圖
1. <resources>
2. <dimen name="corner_radius">4dp</dimen>
3. <dimen name="layer_padding">3dp<<dimen>
4. </resources>
我們用shape來定義按鈕背景 創建rect_pressed.xml 的 drawable 文件
1. <shape xmlns:android="http://schemas.android.com/apk/res/android"
2. android:shape="rectangle">
3. <corners android:radius="@dimen/corner_radius" />
4. <solid android:color="@color/blue_pressed" />
5. </shape>
創建rect_normal.xml file 的drawable 文件。
1. <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
2. <item android:drawable="@drawable/rect_pressed" />
3.
4. <item android:bottom="@dimen/layer_padding">
5. <shape android:shape="rectangle">
6. <corners android:radius="@dimen/corner_radius" />
7. <solid android:color="@color/blue_normal" />
8. </shape>
9. </item>
10. </layer-list>
爲按鈕定義 selector . 創建flat_selector.xml 文件。
1. <selector xmlns:android="http://schemas.android.com/apk/res/android">
2. <item android:state_pressed="true" android:drawable="@drawable/rect_pressed"/>
3. <item android:drawable="@drawable/rect_normal"/>
4. </selector>
定義 button 設置 background 爲 flat_selector.
1. <Button
2. android:layout_width="fill_parent"
3. android:layout_height="wrap_content"
4. android:background="@drawable/flat_selector"
5. android:textColor="@android:color/white"
6. android:text="Say Hello" />