BadTokenException 解决方案

最新推荐文章于 2022-07-04 14:43:35 发布

程序员Android

最新推荐文章于 2022-07-04 14:43:35 发布

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和你一起终身学习，这里是程序员Android

本文链接：https://blog.youkuaiyun.com/wjky2014/article/details/88817280

本文介绍了一个BadTokenException异常的问题及解决方法，该异常出现在尝试显示系统对话框时，并且只在Android 8.0及以上版本中出现。文章提供了具体的代码示例以及如何正确设置窗口类型以避免权限被拒绝。

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BadTokenException:

log 举例

03-12 14:55:13.734  5564  5564 E AndroidRuntime: FATAL EXCEPTION: main
03-12 14:55:13.734  5564  5564 E AndroidRuntime: Process: com.android.fmradio, PID: 5564
03-12 14:55:13.734  5564  5564 E AndroidRuntime: java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.HEADSET_PLUG flg=0x40000010 (has extras) } in com.android.fmradio.FmService$FmServiceBroadcastReceiver@b3d2a03
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0(LoadedApk.java:1401)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.app.-$$Lambda$LoadedApk$ReceiverDispatcher$Args$_BumDX2UKsnxLVrE6UJsJZkotuA.run(Unknown Source:2)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.os.Handler.handleCallback(Handler.java:873)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:99)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:193)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:6702)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911)
03-12 14:55:13.734  5564  5564 E AndroidRuntime: Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@f652dba -- permission denied for window type 2003
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.view.ViewRootImpl.setView(ViewRootImpl.java:851)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.app.Dialog.show(Dialog.java:329)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at com.android.fmradio.FmService$FmServiceBroadcastReceiver.onReceive(FmService.java:322)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0(LoadedApk.java:1391)
03-12 14:55:13.734  5564  5564 E AndroidRuntime:    ... 8 more

产生原因

Android 8.0 之后如果要弹出系统弹窗，需要使用 TYPE_APPLICATION_OVERLAY以及
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />来进行系统弹窗，否则会报以下异常BadTokenException: Unable to add window android.view.ViewRootImpl$W@f652dba -- permission denied for window type 2003

解决方案

系统弹窗，请用TYPE_APPLICATION_OVERLAY 替换之前的Windows Type。

Dialog mFMDialog = new AlertDialog.Builder(context)
                        .setTitle(R.string.airplane_title).setMessage(R.string.airplane_message)
                        .setPositiveButton(R.string.close_FM,
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                        
                                }
                            }
                        ).setCancelable(false).create();
                    // Android 8.0 之后弹出系统弹窗，需要使用    TYPE_APPLICATION_OVERLAY 
                    // <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
                    // 一下两个 之前常用的系统的Dialog 会报 
                    // BadTokenException: Unable to add window android.view.ViewRootImpl$W@f652dba -- permission denied for window type 2003
                    //mFMDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG);
                    //mFMDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
                    mFMDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY);
                    mFMDialog.show();