BadTokenException 解決方案

摘要： 極力推薦Android 開發大總結文章：歡迎收藏 Android 開發技術文章大總結 BadTokenException: log 舉例 03-12 14:55:13.734...

BadTokenException:

log 舉例

03-12 14:55:13.73455645564 E AndroidRuntime: FATAL EXCEPTION: main
03-12 14:55:13.73455645564 E AndroidRuntime: Process: com.android.fmradio, PID: 5564
03-12 14:55:13.73455645564 E AndroidRuntime: java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.HEADSET_PLUG flg=0x40000010 (has extras) } in com.android.fmradio.FmService$FmServiceBroadcastReceiver@b3d2a03
03-12 14:55:13.73455645564 E AndroidRuntime:at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0(LoadedApk.java:1401)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.app.-$$Lambda$LoadedApk$ReceiverDispatcher$Args$_BumDX2UKsnxLVrE6UJsJZkotuA.run(Unknown Source:2)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.os.Handler.handleCallback(Handler.java:873)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.os.Handler.dispatchMessage(Handler.java:99)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.os.Looper.loop(Looper.java:193)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.app.ActivityThread.main(ActivityThread.java:6702)
03-12 14:55:13.73455645564 E AndroidRuntime:at java.lang.reflect.Method.invoke(Native Method)
03-12 14:55:13.73455645564 E AndroidRuntime:at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
03-12 14:55:13.73455645564 E AndroidRuntime:at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911)
03-12 14:55:13.73455645564 E AndroidRuntime: Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@f652dba -- permission denied for window type 2003
03-12 14:55:13.73455645564 E AndroidRuntime:at android.view.ViewRootImpl.setView(ViewRootImpl.java:851)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.app.Dialog.show(Dialog.java:329)
03-12 14:55:13.73455645564 E AndroidRuntime:at com.android.fmradio.FmService$FmServiceBroadcastReceiver.onReceive(FmService.java:322)
03-12 14:55:13.73455645564 E AndroidRuntime:at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0(LoadedApk.java:1391)
03-12 14:55:13.73455645564 E AndroidRuntime:... 8 more

產生原因

Android 8.0 之後如果要彈出系統彈窗，需要使用 TYPE_APPLICATION_OVERLAY 以及

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /> 來進行系統彈窗，否則會報以下異常 BadTokenException: Unable to add window android.view.ViewRootImpl$W@f652dba -- permission denied for window type 2003

解決方案

系統彈窗，請用 TYPE_APPLICATION_OVERLAY 替換之前的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 之後彈出系統彈窗，需要使用TYPE_APPLICATION_OVERLAY 
// <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
// 一下兩個 之前常用的系統的Dialog 會報 
// 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();

參考 Google Android GO 行為變更