問題的解決方法很簡(jiǎn)單，這里主要是介紹一個(gè)調(diào)試小技巧楷兽，且聽事件由來：
場(chǎng)景：Activity 中彈出一個(gè) Dialog兽肤，幾秒后會(huì) dismiss。平時(shí)測(cè)試沒遇到崩潰测蹲，但是崩潰平臺(tái)卻捕捉到如下錯(cuò)誤：
java.lang.IllegalArgumentException: View=com.android.internal.policy.impl.PhoneWindow$DecorView{41ef97f8 V.E..... R.....ID 0,0-480,762} not attached to window manager
at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:370)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:299)
at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:84)
at android.app.Dialog.dismissDialog(Dialog.java:329)
at android.app.Dialog.dismiss(Dialog.java:312)
at com.quickdy.vpn.dialog.b.dismiss(ConnectingDialog.java:229)
at com.quickdy.vpn.dialog.b.i(ConnectingDialog.java:436)
at com.quickdy.vpn.dialog.b.j(ConnectingDialog.java:59)
at com.quickdy.vpn.dialog.b$a.onFinish(ConnectingDialog.java:262)
at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:118)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5584)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
at dalvik.system.NativeStart.main(Native Method)
原因就是 Dialog dismiss 的時(shí)候， Activity 的窗口已經(jīng)被干掉了鬼吵。
在 stackoverflow 上有人提了這個(gè)奇技淫巧：
1. Enable this option on your device: Settings -> Developer Options - Don't keep Activities.
2. Press Home button while the AsyncTask is executing and the ProgressDialog is showing.
這樣就能模擬『對(duì)話框展示過程中扣甲，Activity 被銷毀的情況』。
解決辦法：在 Activity / Fragment 的 onDestroy 方法齿椅，加上這幾行代碼:
@Override
protected void onDestroy() {
if (dialog != null && dialog.isShowing()) {
dialog.dismiss();
}
super.onDestroy();
}
