这个错误是什么,为什么会发生?

05-17 18:24:57.069: ERROR/WindowManager(18850): Activity com.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here
05-17 18:24:57.069: ERROR/WindowManager(18850): android.view.WindowLeaked: Activity ccom.mypkg.myP has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@44c46ff0 that was originally added here
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.ViewRoot.<init>(ViewRoot.java:231)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.view.Window$LocalWindowManager.addView(Window.java:424)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.Dialog.show(Dialog.java:239)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.mypkg.myP$PreparePairingLinkageData.onPreExecute(viewP.java:183)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.AsyncTask.execute(AsyncTask.java:391)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.mypkg.myP.onCreate(viewP.java:94)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2544)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.access$2200(ActivityThread.java:126)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.os.Looper.loop(Looper.java:123)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at android.app.ActivityThread.main(ActivityThread.java:4595)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at java.lang.reflect.Method.invokeNative(Native Method)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at java.lang.reflect.Method.invoke(Method.java:521)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
05-17 18:24:57.069: ERROR/WindowManager(18850):     at dalvik.system.NativeStart.main(Native Method)

当前回答

我在我的视频播放器应用程序中获取了这些日志。这些消息是在视频播放器关闭时抛出的。有趣的是,我曾经以随机的方式在几次运行中获得这些日志。此外,我的应用程序不涉及任何progressdialog。最后,我用下面的实现解决了这个问题。

@Override
protected void onPause()
{
    Log.v("MediaVideo", "onPause");
    super.onPause();
    this.mVideoView.pause();
    this.mVideoView.setVisibility(View.GONE);
}

@Override
protected void onDestroy()
{
    Log.v("MediaVideo", "onDestroy");
    super.onDestroy();
}

@Override
protected void onResume()
{
    Log.v("MediaVideo", "onResume");
    super.onResume();
    this.mVideoView.resume();
}

覆盖OnPause调用mVideoView.pause()和设置可见性为GONE。通过这种方式,我可以解决“活动已泄漏窗口”日志错误问题。

其他回答

我在AlertDialog上错误地调用hide()而不是dismiss()触发了这个错误。

有问题,当一个ProgressDialog仍然显示时,我完成了一个活动。

所以首先隐藏对话框,然后完成活动。

我使用的是Jetpack Compose,没有对话,所以这些答案大部分都不适用于我。结果是我在Kotlin协程中访问了超出范围的数组索引。 我在try和catch中封装了所有协程调用。

try {
     viewModelScope.launch(Dispatchers.IO) {
     ....
     }
} catch (e: Exception) {
     Log.e("Exception: ", e.message.toString())
}

最后发现了错误(或者我应该说我的错误:P)。

在活动销毁前解散progressBar

@Override
    protected void onDestroy() {
        try {
            if (progressDialog != null)
                progressDialog.dismiss();
        } catch (Exception e) {
            e.printStackTrace();
        }
        super.onDestroy();
    }

你可以通过一个简单的/愚蠢的错误得到这个异常,通过(例如)在显示AlertDialog后不小心调用finish(),如果你错过了switch语句中的break call语句……

   @Override
   public void onClick(View v) {
    switch (v.getId()) {
        case R.id.new_button:
            openMyAlertDialog();
            break; <-- If you forget this the finish() method below 
                       will be called while the dialog is showing!
        case R.id.exit_button:
            finish();
            break;
        }
    }

finish()方法将关闭Activity,但AlertDialog仍然显示!

因此,当您专注地盯着代码,寻找糟糕的线程问题或复杂的编码等时,不要只见树不见林。有时它可能只是一些简单而愚蠢的事情,如缺少break语句。:)