如何为两个按钮生成 KeyEvent？

如何为两个按钮生成 KeyEvent？也就是说，生成两个按钮的组合，例如 Alt 和 G。

我尝试了以下方法，但它不起作用：

public boolean dispatchKeyEvent(KeyEvent event) {
        Log.d("KeyEvent","event= "+event);
        if (event.getAction() != KeyEvent.ACTION_UP){
            switch (event.getKeyCode()){
                case KeyEvent.KEYCODE_F10:
                case KeyEvent.KEYCODE_PROG_GREEN:
                {
                    new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_G | KeyEvent.KEYCODE_ALT_LEFT);
                    return false;

                }

                case KeyEvent.KEYCODE_F9:
                case KeyEvent.KEYCODE_PROG_RED:{
                    dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_H | KeyEvent.KEYCODE_ALT_LEFT));
                    return false;
                }

                case KeyEvent.KEYCODE_F11:
                case KeyEvent.KEYCODE_PROG_YELLOW:{
                    simulateKey(KeyEvent.KEYCODE_ALT_LEFT & KeyEvent.KEYCODE_Y);
                    return false;
                }

                case KeyEvent.KEYCODE_F12:
                case KeyEvent.KEYCODE_PROG_BLUE:{
                    simulateKey(KeyEvent.KEYCODE_ALT_LEFT | KeyEvent.KEYCODE_B);
                    return false;
                }
            }
            return true;
        }
        return super.dispatchKeyEvent(event);
    }



public static void simulateKey( final int KeyCode) {
        new Thread() {
            @Override
            public void run() {
                try {
                    Instrumentation inst = new Instrumentation();
                    inst.sendKeyDownUpSync(KeyCode);
                } catch (Exception e) {
                    Log.e("Exception", e.toString());
                }
            }

        }.start();
    }