Question

我希望能够使用密钥（即数字1-4）从PopupMenu中选择一个选项。我正在编写应用程序的设备有一个内置的数字键盘，使它们始终可访问（不使用软键盘）。

目的是让用户能够按下一个数字/按钮，这里显示的菜单正常工作（这是我的活动中）：

@Override
public boolean onKeyUp(int keyCode, KeyEvent event){
    Log.d("onKeyUp", KeyEvent.keyCodeToString(keyCode));
    if (event.getKeyCode() == KeyEvent.KEYCODE_5) {
        showPopupMenu((Button) findViewById(R.id.btnMenu));
    }
    return true;
}

我希望能够使用键盘从菜单中选择其中一个选项，但是当菜单可见时，只要按下某个键，就不会触发onKeyUp事件。

这是菜单代码：

public void showPopupMenu(View v){
    PopupMenu popupMenu = new PopupMenu(this, v);
    final MenuInflater menuInflator = popupMenu.getMenuInflater();

    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem menuItem) {
            //Do something
            return true;
        }
    });

    menuInflator.inflate(R.menu.current_screen_menu, popupMenu.getMenu());
    popupMenu.show();
}

这是使用Android 4.1（API 16）。谢谢你的帮助！很高兴在需要的地方提供更多代码。

Answer 1

您需要在popupwindow对象中设置keyevent侦听器，如此

public void showPopupMenu(View v){
    PopupMenu popupMenu = new PopupMenu(this, v);
    final MenuInflater menuInflator = popupMenu.getMenuInflater();

    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem menuItem) {
            //Do something
            return true;
        }
    });

    menuInflator.inflate(R.menu.current_screen_menu, popupMenu.getMenu());
    popupMenu.show();

    // You have to implement following listner
    popupMenu.getContentView().setOnKeyListener(new View.OnKeyListener() {        
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (keyCode ==  KeyEvent.KEYCODE_MENU && 
                    event.getRepeatCount() == 0 && 
                    event.getAction() == KeyEvent.ACTION_DOWN) {
                // ... payload action here. e.g. popupMenu.dismiss();
                return true;
            }                
            return false;
        }
    });
}

PopupMenu可见时检测键盘

1 个答案: