android.view.KeyEvent#KEYCODE_NUM源码实例Demo

/**
 * Handles presses of the meta keys.
 */
public boolean onKeyDown(View view, Editable content, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
        press(content, CAP);
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
            || keyCode == KeyEvent.KEYCODE_NUM) {
        press(content, ALT);
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_SYM) {
        press(content, SYM);
        return true;
    }

    return false; // no super to call through to
}
 

/**
 * Handles release of the meta keys.
 */
public boolean onKeyUp(View view, Editable content, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
        release(content, CAP, event);
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
            || keyCode == KeyEvent.KEYCODE_NUM) {
        release(content, ALT, event);
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_SYM) {
        release(content, SYM, event);
        return true;
    }

    return false; // no super to call through to
}
 

/**
 * Handles presses of the meta keys.
 */
public static long handleKeyDown(long state, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
        return press(state, META_SHIFT_ON, META_SHIFT_MASK,
                META_CAP_LOCKED, META_CAP_PRESSED, META_CAP_RELEASED, META_CAP_USED);
    }

    if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
            || keyCode == KeyEvent.KEYCODE_NUM) {
        return press(state, META_ALT_ON, META_ALT_MASK,
                META_ALT_LOCKED, META_ALT_PRESSED, META_ALT_RELEASED, META_ALT_USED);
    }

    if (keyCode == KeyEvent.KEYCODE_SYM) {
        return press(state, META_SYM_ON, META_SYM_MASK,
                META_SYM_LOCKED, META_SYM_PRESSED, META_SYM_RELEASED, META_SYM_USED);
    }
    return state;
}
 

/**
 * Handles release of the meta keys.
 */
public static long handleKeyUp(long state, int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
        return release(state, META_SHIFT_ON, META_SHIFT_MASK,
                META_CAP_PRESSED, META_CAP_RELEASED, META_CAP_USED, event);
    }

    if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
            || keyCode == KeyEvent.KEYCODE_NUM) {
        return release(state, META_ALT_ON, META_ALT_MASK,
                META_ALT_PRESSED, META_ALT_RELEASED, META_ALT_USED, event);
    }

    if (keyCode == KeyEvent.KEYCODE_SYM) {
        return release(state, META_SYM_ON, META_SYM_MASK,
                META_SYM_PRESSED, META_SYM_RELEASED, META_SYM_USED, event);
    }
    return state;
}
 

@Override
public boolean sendKeyEvent(KeyEvent event) {
    int keyCode = event.getKeyCode();
    if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
        isShiftPressed = event.getAction() == KeyEvent.ACTION_DOWN;
    } else if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
            || keyCode == KeyEvent.KEYCODE_NUM) {
        isAltPressed = event.getAction() == KeyEvent.ACTION_DOWN;
    } else if (keyCode == KeyEvent.KEYCODE_SYM) {
        isSymPressed = event.getAction() == KeyEvent.ACTION_DOWN;
    } else if (keyCode == KeyEvent.KEYCODE_CTRL_LEFT || keyCode == KeyEvent.KEYCODE_CTRL_RIGHT) {
        isCtrlPressed = event.getAction() == KeyEvent.ACTION_DOWN;
    }
    return ic.sendKeyEvent(event);
}