不能删除由windowManager.addView连接视图（） [英] Cannot remove a view attached by windowManager.addView()

问题描述

我试图删除添加到窗口管理层。但是，当我打电话removeView（）什么也不会发生。
有谁知道如何去除呢？我的code看起来是这样的。

 公共类MainActivity扩展活动实现View.OnClickListener {    私人窗口管理WM;
    私人WindowManager.LayoutParams orientationLayout;
    私人的LinearLayout orientationChanger;    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;        //初始化景观事情
        WM =（窗口管理器）getApplicationContext（）getSystemService（Service.WINDOW_SERVICE）。
        orientationChanger =新的LinearLayout（getApplicationContext（））;
        orientationChanger.setClickable（假）;
        orientationChanger.setFocusable（假）;
        orientationChanger.setFocusableInTouchMode（假）;
        orientationChanger.setLongClickable（假）;
        orientationLayout =新WindowManager.LayoutParams（
                WindowManager.LayoutParams.WRAP_CONTENT，WindowManager.LayoutParams.WRAP_CONTENT，
                WindowManager.LayoutParams.TYPE_SYSTEM_ERROR，
                WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，
                PixelFormat.RGBA_8888）;
        orientationLayout.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;        // set视图
        的setContentView（R.layout.calibrate）;        findViewById（android.R.id.button）.setOnClickListener（本）;        lockLandScape（）;
    }    公共无效lockLandScape（）{
        wm.addView（orientationChanger，orientationLayout）;        orientationChanger.setVisibility（View.GONE）;
        orientationLayout.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        wm.updateViewLayout（orientationChanger，orientationLayout）;
        orientationChanger.setVisibility（View.VISIBLE）;
    }    公共无效releaseLandScape（）{
        wm.removeView（orientationChanger）;        //这不工作，以及
        //wm.removeViewImmediate(orientationChanger）;
    }    @Overrride
    公共无效的onClick（查看视图）{
        Log.i（MyApp的，点击）
        releaseLandScape（）;
    }}
 

解决方案

而不是使用像WM的属性，你可以尝试使用

 （窗口管理器）getApplicationContext（）。getSystemService（Service.WINDOW_SERVICE）
 

每次？

这样的：

 （（窗口管理器）getApplicationContext（）getSystemService（Service.WINDOW_SERVICE）。）removeView（orientationChanger）。
 

I'm trying to remove a layer added to WindowManager. But nothing happens when I call removeView(). Does anybody know how to remove it? My code looks like this.

public class MainActivity extends Activity implements View.OnClickListener{

    private WindowManager wm;
    private  WindowManager.LayoutParams orientationLayout;
    private LinearLayout orientationChanger;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // init landscape things
        wm = (WindowManager) getApplicationContext().getSystemService(Service.WINDOW_SERVICE);
        orientationChanger = new LinearLayout(getApplicationContext());
        orientationChanger.setClickable(false);
        orientationChanger.setFocusable(false);
        orientationChanger.setFocusableInTouchMode(false);
        orientationChanger.setLongClickable(false);
        orientationLayout = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
                WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.RGBA_8888);
        orientationLayout.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;

        // set view
        setContentView(R.layout.calibrate);

        findViewById(android.R.id.button).setOnClickListener(this);

        lockLandScape();
    }

    public void lockLandScape(){
        wm.addView(orientationChanger, orientationLayout);

        orientationChanger.setVisibility(View.GONE);
        orientationLayout.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        wm.updateViewLayout(orientationChanger, orientationLayout);
        orientationChanger.setVisibility(View.VISIBLE);
    }

    public void releaseLandScape(){
        wm.removeView(orientationChanger);

        // This doesn't work as well
        //wm.removeViewImmediate(orientationChanger);
    }

    @Overrride
    public void onClick(View view){
        Log.i("myapp", "clicked")
        releaseLandScape();
    }

}

解决方案

Instead of using an attribute like wm, could you try using

(WindowManager) getApplicationContext().getSystemService(Service.WINDOW_SERVICE)

everytime ?

like :

((WindowManager) getApplicationContext().getSystemService(Service.WINDOW_SERVICE)).removeView(orientationChanger);

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