自定義軟鍵盤(屏蔽系統輸入法,隨機鍵盤)

實現思路:
1.自定義RandomKeyboard,繼承系統keyboard
2.自定義keyboardViewGroup(線性佈局,含一級子控件NestedScrollView和自定義RandomKeyboard)，重新addview方法使添加的子控件添加到NestedScrollView裏。可在這個控件初始化時屏蔽系統輸入法，監聽事件分發通過scrollview中findFocus獲取當前有焦點的edittext控件並綁定RandomKeyboard

核心代碼

RandomKeyboard

鍵盤操作

 public void onKey(int primaryCode, int[] keyCodes) {
        Editable editable = null;
        int selectionStart = 0;
        if (editText != null) {
            editable = editText.getText();
            selectionStart = editText.getSelectionStart();
        }
        if (keyboard != null) {
            switch (primaryCode) {
                case Keyboard.KEYCODE_SHIFT://shift處理 大小寫字母切換
                    keyboard.setShifted(!keyboard.isShifted());
                    invalidateAllKeys();
                    break;
                case Keyboard.KEYCODE_DELETE://刪除處理
                    if (editable != null && editable.length() > 0 && selectionStart > 0) {
                        editable.delete(selectionStart - 1, selectionStart);
                    }
                    break;
                   
              ....
              自定義鍵盤操作
              ....
              
                case ENTER_KEYBOARD://enter處理
                    if (editText != null && editText.getImeOptions() == EditorInfo.IME_ACTION_NEXT) {
                        @SuppressLint("WrongConstant") View view = editText.focusSearch(FOCUS_FORWARD);
                        editText.onEditorAction(EditorInfo.IME_ACTION_NEXT);
                        if (view instanceof EditText) {
                            bindEditText((EditText) view);
                        }
                    } else {
                        if (editText != null && editText.hasFocus()) {
                            editText.clearFocus();
                        }
                        hide();
                    }
                    break;
                default:
                    if (primaryCode >= 97 && primaryCode <= 97 + 26) {
                        if (editText != null) {
                            editable.insert(selectionStart,
                                    keyboard.isShifted() ? Character.toString((char) (primaryCode - 32))
                                            : Character.toString((char) primaryCode));
                        }
                    } else {
                        if (editable != null) {
                            editable.insert(
                                    selectionStart,
                                    Character.toString((char) primaryCode));
                        }
                    }
                    break;
            }
        }
    }

隨機打亂key

 private RandomKeyboard setRandom() {
        if (keyType == TYPE_SYMBOL || keyType == TYPE_LETTER_AND_NUM) {
            return this;
        }
        if (keyboard != null) {
            List<Keyboard.Key> newKeys = keyboard.getKeys();
            if (checkList(newKeys)) {
                containerKeys.clear();
                resultKeys.clear();
                //篩選並緩存可隨機的key
                for (Keyboard.Key key : newKeys) {
                    if (key != null && isNeedRandom(key.label)) {
                        containerKeys.add(new KeyModel(key.codes, key.label));
                    }
                }
                //隨機打亂篩選出的key
                Random rand = new SecureRandom();
//                rand.setSeed(SystemClock.currentThreadTimeMillis());
                int size = containerKeys.size();
                for (int i = 0; i < size; i++) {
                    int num = rand.nextInt(size - i);
                    resultKeys.add(containerKeys.get(num));
                    containerKeys.remove(num);
                }
                //將打亂的key賦值給鍵盤空位(第一步中取值的位置)
                int count = 0;
                for (Keyboard.Key key : newKeys) {
                    if (key != null && isNeedRandom(key.label) && checkListItem(resultKeys, count)) {
                        KeyModel randomKey = resultKeys.get(count);
                        key.label = randomKey.getLable();
                        key.codes = randomKey.getCodes();
                        count++;
                    }
                }
                invalidateAllKeys();
                isRandom = true;
            }
        }
        return this;
    }

RandomKeyboardViewGroup

禁用系統輸入法

 //禁用系統輸入法
        if (context instanceof Activity) {
            Window window = ((Activity) context).getWindow();
            ((Activity) context).getWindow().setFlags(
                    WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
                    WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
        }

自動查找綁定EditText

   @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        boolean touchEvent = super.dispatchTouchEvent(ev);
        View editFocus = findEditFocus();
        if (keyboard != null) {
            if (editFocus != null) {
                if (ViewUtils.isOutsideTheView(editFocus, ev) && ViewUtils.isOutsideTheView(keyboard, ev)) {
                    editFocus.clearFocus();
                    keyboard.hide();
                } else {
                    keyboard.bindEditText((EditText) editFocus);
                    keyboard.show();
                }
            } else {
                keyboard.hide();
            }
        }
        return touchEvent;
    }

    public View findEditFocus() {
        View currentFocus = slContent != null ? slContent.findFocus() : null;
        return currentFocus instanceof EditText ? currentFocus : null;
    }

自定義RandomKeyboard

繼承自KeyboardView
實現OnKeyboardActionListener監聽
重寫 public void onKey(int primaryCode, int[] keyCodes) 方法控制軟鍵盤操作

public class RandomKeyboard extends KeyboardView implements KeyboardView.OnKeyboardActionListener, LifecycleObserver {

    private static final int LETTER_KEYBOARD = -10;
    private static final int NUMBER_KEYBOARD = -11;
    private static final int SYMBOL_KEYBOARD = -12;
    private static final int ENTER_KEYBOARD = -13;

    private Context context;
    private Keyboard keyboard;
    private EditText editText;

    private boolean isRandom = false;
    private boolean isNeedRandom = false;
    private int keyType;
    private int defLetterType = TYPE_LETTER;
    private int defNumberType = TYPE_NUMBER;

    private List<KeyModel> containerKeys = new ArrayList<>();
    private List<KeyModel> resultKeys = new ArrayList<>();

    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
    public void onDestroy() {
        if (containerKeys instanceof ArrayList) {
            containerKeys.clear();
            containerKeys = null;
        }
        if (resultKeys instanceof ArrayList) {
            resultKeys.clear();
            resultKeys = null;
        }
        containerKeys = null;
        resultKeys = null;
        if (context instanceof LifecycleOwner) {
            ((LifecycleOwner) context).getLifecycle().removeObserver(this);
        }
        context = null;
        editText = null;
    }

    public RandomKeyboard(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public RandomKeyboard(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
        if (context instanceof LifecycleOwner) {
            ((LifecycleOwner) context).getLifecycle().addObserver(this);
        }
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RandomKeyboard);
        isNeedRandom = typedArray.getBoolean(R.styleable.RandomKeyboard_isRandom, false);
        int anInt = typedArray.getInt(R.styleable.RandomKeyboard_keyboardType, TYPE_LETTER);
        typedArray.recycle();
        setKeyboard(anInt);
        setOnKeyboardActionListener(this);
        hide();
    }

    /**
     * 綁定EditText
     */
    public RandomKeyboard bindEditText(EditText editText) {
        this.editText = editText;
        if (editText != null) {
            setVisibility(editText.hasFocus() ? VISIBLE : GONE);
            int imeOptions = editText.getImeOptions();
            List<Keyboard.Key> keys = CheckValueUtils.checkNotNull(keyboard).getKeys();
            for (int i = 0; i < checkList(keys, "").size(); i++) {
                Keyboard.Key key = keys.get(i);
                if (key.codes[0] == -13) {
                    key.label = imeOptions == EditorInfo.IME_ACTION_NEXT ? "下一步" : "完成";
                    invalidateKey(i);
                    return this;
                }
            }
        }
        return this;
    }

    /**
     * @see Constant.KEYBOARD_TYPE
     */
    public RandomKeyboard setKeyboard(@KeyboardType int type) {
        keyType = type;
        switch (type) {
            case TYPE_LETTER:
                defLetterType = TYPE_LETTER;
                keyboard = new Keyboard(context, R.xml.letter_keyboard_layout);
                break;
            case TYPE_NUMBER:
                defNumberType = TYPE_NUMBER;
                keyboard = new Keyboard(context, R.xml.number_keyboard_layout);
                break;
            case TYPE_SYMBOL:
                keyboard = new Keyboard(context, R.xml.symbol_keyboard_layout);
                break;
            case TYPE_LETTER_AND_NUM:
                defLetterType = TYPE_LETTER_AND_NUM;
                keyboard = new Keyboard(context, R.xml.letter_num_keyboard_layout);
                break;
            case TYPE_NUM_AND_SYMBOL:
                defNumberType = TYPE_NUM_AND_SYMBOL;
                keyboard = new Keyboard(context, R.xml.num_symbol_keyboard_layout);
                break;
            default:
                keyboard = new Keyboard(context, R.xml.letter_keyboard_layout);
                break;
        }
        setKeyboard(keyboard);
        isRandom(isNeedRandom);
        return this;
    }

    public Keyboard getKeyboard() {
        return keyboard;
    }

    @Override
    public void onKey(int primaryCode, int[] keyCodes) {
        Editable editable = null;
        int selectionStart = 0;
        if (editText != null) {
            editable = editText.getText();
            selectionStart = editText.getSelectionStart();
        }
        if (keyboard != null) {
            switch (primaryCode) {
                case Keyboard.KEYCODE_SHIFT://shift處理 大小寫字母切換
                    keyboard.setShifted(!keyboard.isShifted());
                    invalidateAllKeys();
                    break;
                case Keyboard.KEYCODE_DELETE://刪除處理
                    if (editable != null && editable.length() > 0 && selectionStart > 0) {
                        editable.delete(selectionStart - 1, selectionStart);
                    }
                    break;
                case LETTER_KEYBOARD:
                    setKeyboard(defLetterType);
                    break;
                case NUMBER_KEYBOARD:
                    setKeyboard(defNumberType);
                    break;
                case SYMBOL_KEYBOARD:
                    setKeyboard(TYPE_SYMBOL);
                    break;
                case ENTER_KEYBOARD://enter處理
                    if (editText != null && editText.getImeOptions() == EditorInfo.IME_ACTION_NEXT) {
                        @SuppressLint("WrongConstant") View view = editText.focusSearch(FOCUS_FORWARD);
                        editText.onEditorAction(EditorInfo.IME_ACTION_NEXT);
                        if (view instanceof EditText) {
                            bindEditText((EditText) view);
                        }
                    } else {
                        if (editText != null && editText.hasFocus()) {
                            editText.clearFocus();
                        }
                        hide();
                    }
                    break;
                default:
                    if (primaryCode >= 97 && primaryCode <= 97 + 26) {
                        if (editText != null) {
                            editable.insert(selectionStart,
                                    keyboard.isShifted() ? Character.toString((char) (primaryCode - 32))
                                            : Character.toString((char) primaryCode));
                        }
                    } else {
                        if (editable != null) {
                            editable.insert(
                                    selectionStart,
                                    Character.toString((char) primaryCode));
                        }
                    }
                    break;
            }
        }
    }

    @Override
    public void onPress(int primaryCode) {

    }

    @Override
    public void onRelease(int primaryCode) {

    }

    @Override
    public void onText(CharSequence text) {

    }

    @Override
    public void swipeLeft() {

    }

    @Override
    public void swipeRight() {

    }

    @Override
    public void swipeDown() {

    }

    @Override
    public void swipeUp() {

    }

    /**
     * @see #setKeyboard(int)
     */
    @Override
    @Deprecated
    public final void setKeyboard(Keyboard keyboard) {
        isRandom = false;
        super.setKeyboard(keyboard);
    }

    /**
     * 隨機打亂key鍵
     *
     * @see Constant.KEYBOARD_TYPE#TYPE_SYMBOL 字符模式不可用
     * @see Constant.KEYBOARD_TYPE#TYPE_LETTER_AND_NUM 字母數字模式不可用
     */
    public RandomKeyboard isRandom(boolean isRandom) {
        isNeedRandom = isRandom;
        if (this.isRandom == isRandom) {
            return this;
        }
        if (isRandom) {
            setRandom();
        } else {
            setKeyboard(keyType);
        }
        return this;
    }

    public boolean isRandom() {
        return isRandom;
    }

    /**
     * 隨機打亂key鍵
     *
     * @see Constant.KEYBOARD_TYPE#TYPE_SYMBOL 字符模式不可用
     * @see Constant.KEYBOARD_TYPE#TYPE_LETTER_AND_NUM 字母數字模式不可用
     */
    private RandomKeyboard setRandom() {
        if (keyType == TYPE_SYMBOL || keyType == TYPE_LETTER_AND_NUM) {
            return this;
        }
        if (keyboard != null) {
            List<Keyboard.Key> newKeys = keyboard.getKeys();
            if (checkList(newKeys)) {
                containerKeys.clear();
                resultKeys.clear();
                //篩選並緩存可隨機的key
                for (Keyboard.Key key : newKeys) {
                    if (key != null && isNeedRandom(key.label)) {
                        containerKeys.add(new KeyModel(key.codes, key.label));
                    }
                }
                //隨機打亂篩選出的key
                Random rand = new SecureRandom();
//                rand.setSeed(SystemClock.currentThreadTimeMillis());
                int size = containerKeys.size();
                for (int i = 0; i < size; i++) {
                    int num = rand.nextInt(size - i);
                    resultKeys.add(containerKeys.get(num));
                    containerKeys.remove(num);
                }
                //將打亂的key賦值給鍵盤空位(第一步中取值的位置)
                int count = 0;
                for (Keyboard.Key key : newKeys) {
                    if (key != null && isNeedRandom(key.label) && checkListItem(resultKeys, count)) {
                        KeyModel randomKey = resultKeys.get(count);
                        key.label = randomKey.getLable();
                        key.codes = randomKey.getCodes();
                        count++;
                    }
                }
                invalidateAllKeys();
                isRandom = true;
            }
        }
        return this;
    }

    private boolean isNeedRandom(CharSequence s) {
        return !TextUtils.isEmpty(s) && s.length() == 1 && (CheckValueUtils.isNumber(s.toString()) || CheckValueUtils.isLetter(s.toString()));
    }

    public RandomKeyboard show() {
        if (getVisibility() != VISIBLE) {
            setVisibility(VISIBLE);
        }
        return this;
    }

    public RandomKeyboard hide() {
        if (getVisibility() != GONE || getVisibility() != INVISIBLE) {
            setVisibility(GONE);
        }
        return this;
    }
}

自定義keyboardViewGroup

使用方法：在activity佈局文件中使用，位置：可做根佈局、或置於toolbar之下到根佈局底部，可假定爲NestedScrollView使用。
注意：
1、keyboardViewGroup中有且只有一個子佈局（因這裏的佈局會加載到NestedScrollView 中）。
2、無需手動綁定EditText，RandomKeyboardViewGroup 自動查找有焦點的EditText並綁定。

public class RandomKeyboardViewGroup extends FrameLayout implements LifecycleObserver {
    private Context context;
    private View inflate;
    private NestedScrollView slContent;
    private RandomKeyboard keyboard;

    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
    public void onDestroy() {
        if (slContent != null) {
            slContent.removeAllViews();
            slContent = null;
        }
        inflate = null;
        if (context instanceof LifecycleOwner) {
            ((LifecycleOwner) context).getLifecycle().removeObserver(this);
        }
        context = null;
        if (keyboard != null) {
            keyboard.onDestroy();
            keyboard = null;
        }
    }

    public RandomKeyboardViewGroup(Context context) {
        this(context, null);
    }

    public RandomKeyboardViewGroup(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public RandomKeyboardViewGroup(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
        if (context instanceof LifecycleOwner) {
            ((LifecycleOwner) context).getLifecycle().addObserver(this);
        }
        inflate = View.inflate(context, R.layout.random_keyboard_viewgroup, null);
        slContent = ViewUtils.findViewById(inflate, R.id.sl_content);
        keyboard = ViewUtils.findViewById(inflate, R.id.random_keyboard);
        addView(inflate);
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RandomKeyboardViewGroup);
        boolean aBoolean = typedArray.getBoolean(R.styleable.RandomKeyboardViewGroup_isRandom, false);
        int anInt = typedArray.getInt(R.styleable.RandomKeyboardViewGroup_keyboardType, TYPE_LETTER);
        typedArray.recycle();
        isRandom(aBoolean);
        setKeyboard(anInt);
        //禁用系統輸入法
        if (context instanceof Activity) {
            Window window = ((Activity) context).getWindow();
            ((Activity) context).getWindow().setFlags(
                    WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
                    WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
        }
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        boolean touchEvent = super.dispatchTouchEvent(ev);
        View editFocus = findEditFocus();
        if (keyboard != null) {
            if (editFocus != null) {
              if (ViewUtils.isOutsideTheView(editFocus, ev) && ViewUtils.isOutsideTheView(keyboard, ev)) {
                    editFocus.clearFocus();
                    keyboard.hide();
                } else {
                    keyboard.bindEditText((EditText) editFocus);
                    keyboard.show();
                }
            } else {
                keyboard.hide();
            }
        }
        return touchEvent;
    }

    public View findEditFocus() {
        View currentFocus = slContent != null ? slContent.findFocus() : null;
        return currentFocus instanceof EditText ? currentFocus : null;
    }

    @Override
    public void addView(View child, int index, ViewGroup.LayoutParams params) {
        if (child.getId() == inflate.getId()) {
            super.addView(child, index, params);
        } else {
            if (slContent != null) {
                slContent.addView(child, index, params);
            }
        }
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        ViewGroup.LayoutParams layoutParams = getLayoutParams();
        layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT;
        layoutParams.width = ViewGroup.LayoutParams.MATCH_PARENT;
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        if (inflate != null) {
            ViewGroup.LayoutParams layoutParams1 = inflate.getLayoutParams();
            layoutParams1.width = getMeasuredWidth();
            layoutParams1.height = getMeasuredHeight();
            inflate.setLayoutParams(layoutParams1);
        }
        if (slContent != null && keyboard != null) {
            slContent.setMinimumWidth(getMeasuredHeight() - keyboard.getMeasuredHeight());
        }
    }

    /**
     * 打開關閉軟鍵盤
     */
    public void KeyboardToggle(boolean isShow) {
        if (keyboard != null) {
            if (isShow) {
                keyboard.show();
            } else {
                keyboard.hide();
            }
        }
    }

    /**
     * 打開關閉軟鍵盤
     */
    public void KeyboardToggle(EditText editText) {
        if (keyboard != null && editText != null) {
            keyboard.bindEditText(editText);
            if (editText.hasFocus()) {
                keyboard.show();
            } else {
                keyboard.hide();
            }
        }
    }

    /**
     * @see Constant.KEYBOARD_TYPE
     * @see RandomKeyboard#setKeyboard(int)
     */
    public void setKeyboard(@KeyboardType int type) {
        if (keyboard != null) {
            keyboard.setKeyboard(type);
        }
    }

    /**
     * 隨機打亂key-value
     * @see RandomKeyboard#isRandom(boolean)
     */
    public void isRandom(boolean isRandom) {
        if (keyboard != null) {
            keyboard.isRandom(isRandom);
        }
    }

    public boolean isRandom() {
        return keyboard != null && keyboard.isRandom();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (null != keyboard && keyboard.getVisibility() == VISIBLE) {
                keyboard.hide();
                return true;
            }
        }
        return super.onKeyDown(keyCode, event);
    }
}

其他資源

KeyModel.class

data class KeyModel(var codes: IntArray, var lable: CharSequence)

KEYBOARD_TYPE

public interface Constant {
    interface KEYBOARD_TYPE {
        int TYPE_LETTER = 1;
        int TYPE_NUMBER = 2;
        int TYPE_SYMBOL = 3;
        int TYPE_LETTER_AND_NUM = 4;
        int TYPE_NUM_AND_SYMBOL = 5;
    }
}

@KeyboardType

@IntDef(
    value = [KEYBOARD_TYPE.TYPE_LETTER,
        KEYBOARD_TYPE.TYPE_NUMBER,
        KEYBOARD_TYPE.TYPE_SYMBOL,
        KEYBOARD_TYPE.TYPE_LETTER_AND_NUM,
        KEYBOARD_TYPE.TYPE_NUM_AND_SYMBOL]
)
@Retention(AnnotationRetention.SOURCE)
annotation class KeyboardType

random_keyboard_viewgroup.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/random_keyboard_group"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.core.widget.NestedScrollView
        android:id="@+id/sl_content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <com.*.widget.RandomKeyboard
        android:id="@+id/random_keyboard"
        style="@style/RandomKeyboard"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

styles.xml

 <style name="RandomKeyboardParent">
        <item name="android:background">#212121</item>
        <item name="android:keyBackground">@drawable/bg_keyboard</item>
        <item name="android:keyPreviewHeight">50dp</item>
        <item name="android:keyPreviewLayout">@layout/keyboard_preview</item>
        <item name="android:keyPreviewOffset">-20dp</item>
        <item name="android:keyTextColor">#dddddd</item>
        <item name="android:keyTextSize">18sp</item>
        <item name="android:labelTextSize">18sp</item>
        <item name="android:paddingTop">2dp</item>
        <item name="android:paddingBottom">2dp</item>
    </style>

    <style name="RandomKeyboard" parent="RandomKeyboardParent" />

attrs.xml

  <attr name="isRandom" format="boolean" />
    <attr name="keyboardType" format="enum">
        <enum name="TYPE_LETTER" value="1" />
        <enum name="TYPE_NUMBER" value="2" />
        <enum name="TYPE_SYMBOL" value="3" />
        <enum name="TYPE_LETTER_AND_NUM" value="4" />
        <enum name="TYPE_NUM_AND_SYMBOL" value="5" />
    </attr>

    <declare-styleable name="RandomKeyboard">
        <attr name="isRandom"/>
        <attr name="keyboardType"/>
    </declare-styleable>

    <declare-styleable name="RandomKeyboardViewGroup">
        <attr name="isRandom"/>
        <attr name="keyboardType"/>
    </declare-styleable>

keyboard_preview.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_key_preview"
    android:gravity="center"
    android:padding="5dp"
    android:textColor="#4D4D4D"
    android:textSize="20sp"
    android:textStyle="bold"/>

bg_key_preview.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <corners android:radius="4dp" />
    <solid android:color="@color/subColorWhite" />
    <stroke
        android:width="1px"
        android:color="@color/gray" />
</shape>

bg_keyboard.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:bottom="2dp"
        android:left="2dp"
        android:right="2dp"
        android:top="2dp">
        <selector>
            <!-- 按壓後圖層 -->
            <item android:state_pressed="true">
                <shape>
                    <solid android:color="#565656" />
                    <corners android:radius="5dp" />
                </shape>
            </item>
            <!-- 正常狀態圖層 -->
            <item>
                <shape>
                    <solid android:color="#383838" />
                    <corners android:radius="5dp" />
                </shape>
            </item>
        </selector>
    </item>
</layer-list>

letter_keyboard_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyHeight="50dp"
    android:keyWidth="10%p">
    <Row android:rowEdgeFlags="top">
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="q" />
        <Key android:keyLabel="w" />
        <Key android:keyLabel="e" />
        <Key android:keyLabel="r" />
        <Key android:keyLabel="t" />
        <Key android:keyLabel="y" />
        <Key android:keyLabel="u" />
        <Key android:keyLabel="i" />
        <Key android:keyLabel="o" />
        <Key
            android:keyEdgeFlags="right"
            android:keyLabel="p" />
    </Row>
    <Row>
        <Key
            android:horizontalGap="5%p"
            android:keyEdgeFlags="left"
            android:keyLabel="a" />
        <Key android:keyLabel="s" />
        <Key android:keyLabel="d" />
        <Key android:keyLabel="f" />
        <Key android:keyLabel="g" />
        <Key android:keyLabel="h" />
        <Key android:keyLabel="j" />
        <Key android:keyLabel="k" />
        <Key
            android:keyEdgeFlags="right"
            android:keyLabel="l" />
    </Row>
    <Row>
        <Key
            android:codes="-1"
            android:isModifier="true"
            android:isSticky="true"
            android:keyEdgeFlags="left"
            android:keyLabel="shift"
            android:keyWidth="15%p" />
        <Key android:keyLabel="z" />
        <Key android:keyLabel="x" />
        <Key android:keyLabel="c" />
        <Key android:keyLabel="v" />
        <Key android:keyLabel="b" />
        <Key android:keyLabel="n" />
        <Key android:keyLabel="m" />

        <Key
            android:codes="-5"
            android:isModifier="true"
            android:isRepeatable="true"
            android:keyEdgeFlags="right"
            android:keyLabel="delete"
            android:keyWidth="15%p" />
    </Row>

    <Row android:rowEdgeFlags="bottom">
        <Key
            android:codes="-11"
            android:keyEdgeFlags="left"
            android:keyLabel="123"
            android:keyWidth="15%p" />
        <Key
            android:codes="64"
            android:keyLabel="\@"/>
        <Key
            android:codes="32"
            android:isRepeatable="true"
            android:keyWidth="35%p"
            android:keyLabel="space" />

        <Key android:keyLabel="." />

        <Key
            android:codes="-12"
            android:keyWidth="15%p"
            android:keyLabel="!?#" />
        <Key
            android:codes="-13"
            android:keyWidth="15%p"
            android:keyEdgeFlags="right"
            android:keyLabel="完成" />
    </Row>
</Keyboard>

letter_num_keyboard_layout.xml

<?xml version="1.0" encoding="UTF-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="10%p"
    android:keyHeight="50dp">

    <Row android:rowEdgeFlags="top">
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="1" />
        <Key android:keyLabel="2" />
        <Key android:keyLabel="3" />
        <Key android:keyLabel="4" />
        <Key android:keyLabel="5" />
        <Key android:keyLabel="6" />
        <Key android:keyLabel="7" />
        <Key android:keyLabel="8" />
        <Key android:keyLabel="9" />
        <Key android:keyEdgeFlags="right"
            android:keyLabel="0" />
    </Row>

    <Row>
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="q" />
        <Key android:keyLabel="w" />
        <Key android:keyLabel="e" />
        <Key android:keyLabel="r" />
        <Key android:keyLabel="t" />
        <Key android:keyLabel="y" />
        <Key android:keyLabel="u" />
        <Key android:keyLabel="i" />
        <Key android:keyLabel="o" />
        <Key
            android:keyEdgeFlags="right"
            android:keyLabel="p" />
    </Row>
    <Row>
        <Key
            android:horizontalGap="5%p"
            android:keyEdgeFlags="left"
            android:keyLabel="a" />
        <Key android:keyLabel="s" />
        <Key android:keyLabel="d" />
        <Key android:keyLabel="f" />
        <Key android:keyLabel="g" />
        <Key android:keyLabel="h" />
        <Key android:keyLabel="j" />
        <Key android:keyLabel="k" />
        <Key
            android:keyEdgeFlags="right"
            android:keyLabel="l" />
    </Row>
    <Row>
        <Key
            android:codes="-1"
            android:isModifier="true"
            android:isSticky="true"
            android:keyWidth="15%p"
            android:keyHeight="100dp"
            android:keyEdgeFlags="left"
            android:keyLabel="shift" />
        <Key android:keyLabel="z" />
        <Key android:keyLabel="x" />
        <Key android:keyLabel="c" />
        <Key android:keyLabel="v" />
        <Key android:keyLabel="b" />
        <Key android:keyLabel="n" />
        <Key android:keyLabel="m" />

        <Key
            android:codes="-5"
            android:isModifier="true"
            android:isRepeatable="true"
            android:keyWidth="15%p"
            android:keyEdgeFlags="right"
            android:keyLabel="delete" />
    </Row>

    <Row android:rowEdgeFlags="bottom">

        <Key
            android:codes="64"
            android:horizontalGap="15%p"
            android:keyWidth="15%p"
            android:keyLabel="\@"/>

        <Key
            android:codes="32"
            android:isRepeatable="true"
            android:keyWidth="40%p"
            android:keyLabel="space" />

        <Key
            android:codes="-12"
            android:keyWidth="15%p"
            android:keyLabel="!?#" />

        <Key
            android:codes="-13"
            android:isRepeatable="true"
            android:keyWidth="15%p"
            android:keyEdgeFlags="right"
            android:keyLabel="完成" />
    </Row>
</Keyboard>

num_symbol_keyboard_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:horizontalGap="0.9%p"
    android:keyWidth="9%p"
    android:keyHeight="52dp"
    android:verticalGap="0px">

    <Row>
        <Key
            android:codes="49"
            android:keyLabel="1" />
        <Key
            android:codes="50"
            android:keyLabel="2" />
        <Key
            android:codes="51"
            android:keyLabel="3" />
        <Key
            android:codes="52"
            android:keyLabel="4" />
        <Key
            android:codes="53"
            android:keyLabel="5" />
        <Key
            android:codes="54"
            android:keyLabel="6" />

        <Key
            android:codes="55"
            android:keyLabel="7" />
        <Key
            android:codes="56"
            android:keyLabel="8" />


        <Key
            android:codes="57"
            android:keyLabel="9" />
        <Key
            android:codes="48"
            android:keyLabel="0" />
    </Row>

    <Row>
        <Key
            android:codes="45"
            android:keyLabel="-" />
        <Key
            android:codes="47"
            android:keyLabel="/" />
        <Key
            android:codes="58"
            android:keyLabel=":" />
        <Key
            android:codes="59"
            android:keyLabel=";" />
        <Key
            android:codes="40"
            android:keyLabel="(" />
        <Key
            android:codes="41"
            android:keyLabel=")" />
        <Key
            android:codes="36"
            android:keyLabel="$" />
        <!--&-->
        <Key
            android:codes="38"
            android:keyLabel="&#038;" />
        <Key
            android:codes="64"
            android:keyLabel="\@" />
        <Key
            android:codes="34"
            android:keyLabel="&#034;" />
    </Row>

    <Row>
        <Key
            android:codes="-12"
            android:keyWidth="11.5%p"
            android:keyEdgeFlags="left"
            android:keyLabel="!?#" />
        <Key
            android:codes="46"
            android:keyLabel="." />
        <Key
            android:codes="44"
            android:keyLabel="," />
        <Key
            android:codes="63"
            android:keyLabel="\?" />
        <Key
            android:codes="33"
            android:keyLabel="!" />
        <Key
            android:codes="39"
            android:keyLabel="'" />
        <Key
            android:codes="42"
            android:keyLabel="*" />
        <Key
            android:codes="43"
            android:keyLabel="+" />
        <Key
            android:codes="-5"
            android:isRepeatable="true"
            android:keyWidth="16.5%p"
            android:keyEdgeFlags="right"
            android:keyLabel="delete" />
    </Row>

    <Row android:rowEdgeFlags="bottom">
        <Key
            android:codes="-10"
            android:keyWidth="22%p"
            android:keyLabel="ABC" />
        <Key
            android:codes="32"
            android:isRepeatable="true"
            android:keyWidth="50.4%p"
            android:keyLabel="space" />
        <Key
            android:codes="-13"
            android:keyWidth="24%p"
            android:keyEdgeFlags="right"
            android:keyLabel="完成" />
    </Row>
</Keyboard>

number_keyboard_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="25%p"
    android:keyHeight="50dp">
    <Row>
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="1" />
        <Key android:keyLabel="2" />
        <Key android:keyLabel="3" />
        <Key
            android:codes="-5"
            android:isModifier="true"
            android:isRepeatable="true"
            android:keyEdgeFlags="right"
            android:keyLabel="delete" />
    </Row>
    <Row>
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="4" />
        <Key android:keyLabel="5" />
        <Key android:keyLabel="6" />
        <Key
            android:codes="-12"
            android:keyEdgeFlags="right"
            android:keyLabel="!?#" />
    </Row>
    <Row>
        <Key
            android:keyEdgeFlags="left"
            android:keyLabel="7" />
        <Key android:keyLabel="8" />
        <Key android:keyLabel="9" />
        <Key
            android:keyEdgeFlags="right"
            android:keyLabel="." />
    </Row>
    <Row android:rowEdgeFlags="bottom">
        <Key
            android:codes="-10"
            android:keyWidth="25%p"
            android:keyEdgeFlags="left"
            android:keyLabel="ABC" />
        <Key
            android:codes="48"
            android:keyWidth="50%p"
            android:keyLabel="0" />
        <Key
            android:codes="-13"
            android:keyWidth="25%p"
            android:keyEdgeFlags="right"
            android:keyLabel="完成" />
    </Row>
</Keyboard>

symbol_keyboard_layout.xml

<?xml version="1.0" encoding="UTF-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyHeight="52dp"
    android:keyWidth="9%p"
    android:horizontalGap="0.9%p"
    android:verticalGap="0px">
    <Row>
        <Key
            android:codes="91"
            android:keyEdgeFlags="left"
            android:keyLabel="["/>
        <Key
            android:codes="93"
            android:keyLabel="]"/>
        <Key
            android:codes="123"
            android:keyLabel="{"/>
        <Key
            android:codes="125"
            android:keyLabel="}"/>
        <Key
            android:codes="35"
            android:keyLabel="#"/>
        <Key
            android:codes="37"
            android:keyLabel="%"/>
        <Key
            android:codes="94"
            android:keyLabel="^"/>
        <Key
            android:codes="42"
            android:keyLabel="*"/>
        <Key
            android:codes="43"
            android:keyLabel="+"/>
        <Key
            android:codes="61"
            android:keyEdgeFlags="right"
            android:keyLabel="="/>
    </Row>
    <Row>
        <Key
            android:codes="95"
            android:keyEdgeFlags="left"
            android:keyLabel="_"/>
        <Key
            android:codes="92"
            android:keyLabel="\&#092;"/>
        <Key
            android:codes="124"
            android:keyLabel="|"/>
        <Key
            android:codes="126"
            android:keyLabel="~"/>

        <!--<-->
        <Key
            android:codes="60"
            android:keyLabel="&#060;"/>
        <!-->-->
        <Key
            android:codes="62"
            android:keyLabel="&#062;"/>
        <Key
            android:codes="8364"
            android:keyLabel="€"/>
        <Key
            android:codes="163"
            android:keyLabel="£"/>
        <Key
            android:codes="165"
            android:keyLabel="¥"/>

        <!-- todo • -->
        <Key
            android:codes="8226"
            android:keyLabel="•"/>
    </Row>

    <Row>
        <Key
            android:codes="-11"
            android:keyEdgeFlags="left"
            android:keyLabel="123"
            android:keyWidth="16.9%p" />
        <Key
            android:codes="45"
            android:keyLabel="-" />
        <Key
            android:codes="46"
            android:keyLabel="." />
        <Key
            android:codes="44"
            android:keyLabel="," />
        <Key
            android:codes="63"
            android:keyLabel="\?" />
        <Key
            android:codes="33"
            android:keyLabel="!" />
        <Key
            android:codes="39"
            android:keyLabel="'" />
        <Key
            android:codes="-5"
            android:isRepeatable="true"
            android:keyWidth="21%p"
            android:keyEdgeFlags="right"
            android:keyLabel="delete" />
    </Row>

    <Row android:rowEdgeFlags="bottom">
        <Key
            android:codes="-10"
            android:keyWidth="22%p"
            android:keyLabel="ABC" />
        <Key
            android:codes="32"
            android:isRepeatable="true"
            android:keyWidth="50.4%p"
            android:keyLabel="space" />
        <Key
            android:codes="-13"
            android:keyWidth="24%p"
            android:keyEdgeFlags="right"
            android:keyLabel="完成" />
    </Row>

</Keyboard>

附(KeyboardView,keyboard,Key,Row屬性解釋)

Keyboard

參數	值類型	釋義	傳值
keyHeight	dimension/fractional	key高度	精確值（dp、px等）和相對值（%、%p）
keyWidth	dimension/fractional	key寬度	同上
horizontalGap	dimension/fractional	key間水平間隙	同上
verticalGap	dimension/fractional	key間垂直間隙	同上

參數	值類型	釋義	傳值
keyHeight	dimension/fractional	key高度	精確值（dp、px等）和相對值（%、%p）
keyWidth	dimension/fractional	key寬度	同上
horizontalGap	dimension/fractional	key間水平間隙	同上
verticalGap	dimension/fractional	key間垂直間隙	同上
keyboardMode	reference	鍵盤模式，不符該模式則跳過此行
rowEdgeFlags	enum	行邊界標記	top/bottom,鍵盤頂部和底部

參數	值類型	釋義	傳值
keyHeight	dimension/fractional	key高度	精確值（dp、px等）和相對值（%、%p）
keyWidth	dimension/fractional	key寬度	同上
horizontalGap	dimension/fractional	key間水平間隙	同上
verticalGap	dimension/fractional	key間垂直間隙	同上
keyEdgeFlags	enum	Key邊緣位置標記	left/right,鍵盤左邊和右邊
codes	int	Key輸出符號對應的Unicode值
iconPreview	reference	彈出回顯的控件	佈局資源
isModifier	boolean	是否爲功能鍵，如：Alt/Shift
isRepeatable	boolean	是否允許長按重複執行
isSticky	boolean	是否是開關鍵,例如Shift大小寫切換按鍵，具有兩種狀態，按下狀態和正常狀態，取值爲true或則false。
keyIcon	reference	替換label顯示在按鍵上的圖標	圖片資源
keyLabel	reference	顯示在Key上的標籤	字符
keyOutputText	string	Key按下時輸出的字符或字符串
popupCharacters	string	小鍵盤顯示的字符，用於顯示Key候選項。
popupKeyboard	reference	按鍵候選小鍵盤的keyboard佈局	佈局資源

KeyboardView

參數	值類型	釋義
keyBackground	reference	按鍵的圖像背景，必須包含多個狀態的drawable
verticalCorrection	dimension	補充觸摸y座標的偏移，用於偏差矯正
keyPreviewLayout	reference	按鍵按下時預覽框的佈局
keyPreviewOffset	dimension	按鍵按下時預覽框的偏移。>0 向下，<0 向上。
keyPreviewHeight	dimension	按鍵按下時預覽框的高度。
keyTextSize	dimension	按鍵文字大小。
keyTextColor	color	按鍵文字顏色。
labelTextSize	dimension	標籤文字大小,keylabel有多個字符且keycodes只有一個值時，該屬性生效。
popupLayout	reference	按鍵候選小鍵盤的KeyboardView佈局。
shadowRadius	float	按鍵文字陰影半徑
shadowColor	color	按鍵文字陰影顏色

自定義軟鍵盤(屏蔽系統輸入法,隨機鍵盤)

自定義軟鍵盤-屏蔽系統輸入法,隨機鍵盤

核心代碼

RandomKeyboard

RandomKeyboardViewGroup

自定義RandomKeyboard

自定義keyboardViewGroup

其他資源

KeyModel.class

KEYBOARD_TYPE

@KeyboardType

random_keyboard_viewgroup.xml

styles.xml

attrs.xml

keyboard_preview.xml

bg_key_preview.xml

bg_keyboard.xml

letter_keyboard_layout.xml

letter_num_keyboard_layout.xml

num_symbol_keyboard_layout.xml

number_keyboard_layout.xml

symbol_keyboard_layout.xml

附(KeyboardView,keyboard,Key,Row屬性解釋)

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