记录一个bug permission denied for window type 2002

最新推荐文章于 2025-05-28 04:30:00 发布

big_sea_m

最新推荐文章于 2025-05-28 04:30:00 发布

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本文详细解析了在Android 8.0设备上运行应用时遇到的悬浮窗权限问题，通过修改窗口类型设置，成功解决了悬浮窗显示失败的错误。适用于所有需要在Android O及以上版本实现悬浮窗功能的开发者。

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悬浮窗显示的时候在8.0手机上总是提示需要打开悬浮窗权限

11-02 22:27:33.870 12386-12386/com.dahai.demo E/AndroidRuntime: FATAL EXCEPTION: main
                                                                      Process: com.dahai.demo, PID: 12386
                                                                      java.lang.RuntimeException: Unable to start service com.dahai.demo.service.FloatService@707220a with Intent { act=com.dahai.demo.service.FloatService.ACTION_ADD_WINDOWS cmp=com.dahai.demo/.service.FloatService }: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@1d5386b -- permission denied for window type 2002
                                                                          at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3694)
                                                                          at android.app.ActivityThread.-wrap21(Unknown Source:0)
                                                                          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1801)
                                                                          at android.os.Handler.dispatchMessage(Handler.java:105)
                                                                          at android.os.Looper.loop(Looper.java:164)
                                                                          at android.app.ActivityThread.main(ActivityThread.java:6938)
                                                                          at java.lang.reflect.Method.invoke(Native Method)
                                                                          at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
                                                                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
                                                                       Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@1d5386b -- permission denied for window type 2002
                                                                          at android.view.ViewRootImpl.setView(ViewRootImpl.java:981)
                                                                          at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:381)
                                                                          at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:100)
                                                                          at com.dahai.demo.service.FloatService.createFloatView(FloatService.java:124)
                                                                          at com.dahai.demo.service.FloatService.onStartCommand(FloatService.java:219)
                                                                          at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3677)
                                                                          at android.app.ActivityThread.-wrap21(Unknown Source:0) 
                                                                          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1801) 
                                                                          at android.os.Handler.dispatchMessage(Handler.java:105) 
                                                                          at android.os.Looper.loop(Looper.java:164) 
                                                                          at android.app.ActivityThread.main(ActivityThread.java:6938) 
                                                                          at java.lang.reflect.Method.invoke(Native Method) 
                                                                          at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327) 
                                                                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

在网上找了很多解决方案都不行，最后研读代码总算找到元凶了，这样设置就ok啦

        // 设置窗体显示类型
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            wmParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
        } else {
            wmParams.type = WindowManager.LayoutParams.TYPE_PHONE;
        }