无法添加 window -- 此 window 类型的权限被拒绝

Question

我在服务中使用了 WindowManager，我一直试图从 this post 和其他 post 中找到解决方案，但我仍然收到此错误信息。

Unable to add window android.view.ViewRootImpl$W@b285d2e -- permission denied for this window type

我已经在我的 Manifest.xml 上使用 android.permission.SYSTEM_ALERT_WINDOW<--- current 或者 android.permission.INTERNAL_SYSTEM_WINDOW(此为系统app只能使用)

我的最低 sdk 是 API17.

错误信息：

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: id.nax.androidstatelite, PID: 16973
    java.lang.RuntimeException: Unable to create service id.nax.androidstatelite.FloatingWindow: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@b285d2e -- permission denied for this window type
        at android.app.ActivityThread.handleCreateService(ActivityThread.java:3883)
        at android.app.ActivityThread.access00(ActivityThread.java:229)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1909)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:7406)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
     Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@b285d2e -- permission denied for this window type
        at android.view.ViewRootImpl.setView(ViewRootImpl.java:936)
        at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:337)
        at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:109)
        at id.nax.androidstatelite.FloatingWindow.onCreate(FloatingWindow.java:56)
        at android.app.ActivityThread.handleCreateService(ActivityThread.java:3873)
        at android.app.ActivityThread.access00(ActivityThread.java:229) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1909) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:7406) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

我的服务：（我的意思是下载示例项目中的这段代码）

public class FloatingWindow extends Service {

    WindowManager wm;
    LinearLayout ll;

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();

        wm = (WindowManager) getSystemService(WINDOW_SERVICE);

        ll = new LinearLayout(this);
        ll.setBackgroundColor(Color.RED);
        LinearLayout.LayoutParams layoutParameteres = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT, 400);
        ll.setBackgroundColor(Color.argb(66,255,0,0));
        ll.setLayoutParams(layoutParameteres);

        final WindowManager.LayoutParams parameters = new WindowManager.LayoutParams(
                500, 200, WindowManager.LayoutParams.TYPE_PHONE,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);
        parameters.gravity = Gravity.CENTER | Gravity.CENTER;
        parameters.x = 0;
        parameters.y = 0;

      Button     stop = new Button(this);
    stop.setText("Stop");
        ViewGroup.LayoutParams btnParameters = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);
        stop.setLayoutParams(btnParameters);

        ll.addView(stop);
        wm.addView(ll, parameters);

        ll.setOnTouchListener(new View.OnTouchListener() {
            WindowManager.LayoutParams updatedParameters = parameters;
            double x;
            double y;
            double pressedX;
            double pressedY;

            @Override
            public boolean onTouch(View v, MotionEvent event) {

                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:

                        x = updatedParameters.x;
                        y = updatedParameters.y;

                        pressedX = event.getRawX();
                        pressedY = event.getRawY();

                        break;

                    case MotionEvent.ACTION_MOVE:
                        updatedParameters.x = (int) (x + (event.getRawX() - pressedX));
                        updatedParameters.y = (int) (y + (event.getRawY() - pressedY));

                        wm.updateViewLayout(ll, updatedParameters);

                    default:
                        break;
                }

                return false;
            }
        });

        stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                wm.removeView(ll);
                stopSelf();
                System.exit(0);
            }
        });
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        stopSelf();
    }

}

我更喜欢/从this and this复制代码我复制这段代码有点旧，在项目下载中已经有 app-debug.apk（在清单中使用 android.permission.SYSTEM_ALERT_WINDOW），我通常尝试它的运行但是当我使用那个代码到我的项目它给我错误信息。

我还必须使用什么权限？

Answer 1

这个问题自己解决了

更新

确保您已在清单中添加权限。

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

将它放在 onCreate 或任何你想要的 askPermission()

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
   askPermission()
}

方法：

@TargetApi(23)
public void askPermission() {
    Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
            Uri.parse("package:" + getPackageName()));
    startActivityForResult(intent, SYSTEM_ALERT_WINDOW_PERMISSION);
}

无法添加 window -- 此 window 类型的权限被拒绝

Unable to add window -- permission denied for this window type

java

android

android-windowmanager