android - 如何在窗口管理器 View 中获得焦点

Question

我使用 WindowManager 创建 View 并将 View 添加到屏幕，但我无法使 View 聚焦。我想我正确设置了 WindowManager.LayoutParams。

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_main);
    pushView = LayoutInflater.from(getApplicationContext()).inflate(
            R.layout.push, null);

    btn = (Button) findViewById(R.id.btn);
    cancelBtn = (Button) pushView.findViewById(R.id.cancelBtn);
    windowManager = getWindowManager();
    handler = new MyHandler();

    pushView.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            System.out.println("onclick");
            windowManager.removeView(pushView);
        }
    });


    btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                    WindowManager.LayoutParams.MATCH_PARENT, 
                    WindowManager.LayoutParams.WRAP_CONTENT, 
                    WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, 
                    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | 
                    WindowManager.LayoutParams.FLAG_FULLSCREEN, 
                    PixelFormat.TRANSLUCENT);
            params.gravity = Gravity.TOP | Gravity.LEFT;
            params.y = 0;
            params.x = 0;

            windowManager.addView(pushView, params);

            new Timer().schedule(new TimerTask() {

                @Override
                public void run() {
                    Message msg = handler.obtainMessage();
                    handler.sendEmptyMessage(0x123);
                }
            }, 5000);

        }
    });

}

我想让pushView'focusable来处理view的事件，这个问题困扰了我很久，谁能帮帮我...

Answer 1

您只需删除 FLAG_NOT_FOCUSABLE 标志:

params.flags = params.flags & ~WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;