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From "Martin Gonzalez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-6837) Hitting Back button while alert being rendered causes leaked window
Date Wed, 17 Sep 2014 22:01:34 GMT

    [ https://issues.apache.org/jira/browse/CB-6837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14138077#comment-14138077
] 

Martin Gonzalez commented on CB-6837:
-------------------------------------

I'll keep it in mind next time, Thanks.

> Hitting Back button while alert being rendered causes leaked window
> -------------------------------------------------------------------
>
>                 Key: CB-6837
>                 URL: https://issues.apache.org/jira/browse/CB-6837
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Android
>    Affects Versions: 3.5.0
>            Reporter: Marcel Kinard
>            Assignee: Joe Bowser
>         Attachments: index.html
>
>
> On master and using dialogs plugin. Using a trivial app that has a button to create an
alert dialog after 500ms timeout. If the Back button is hit at approximately the same time
as the timer expires and the alert is to be shown, the following exception appears in logcat:
> D/CordovaWebView( 8178): The current URL is: file:///android_asset/www/index.html
> D/CordovaWebView( 8178): The URL at item 0 is: file:///android_asset/www/index.html
> D/dalvikvm(  513): GC_FOR_ALLOC freed 306K, 13% free 14164K/16240K, paused 54ms, total
55ms
> D/CordovaActivity( 8178): Paused the application!
> D/CordovaWebView( 8178): Handle the pause
> W/IInputConnectionWrapper( 8178): showStatusIcon on inactive InputConnection
> W/InputMethodManagerService(  513): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@42396598
(uid=10050 pid=8178)
> D/CordovaActivity( 8178): CordovaActivity.onDestroy()
> D/CordovaWebView( 8178): >>> loadUrlNow()
> E/WindowManager( 8178): 
> E/WindowManager( 8178): android.view.WindowLeaked: Activity com.example.Example has leaked
window com.android.internal.policy.impl.PhoneWindow$DecorView{41f0d8b8 V.E..... R.....I. 0,0-465,256}
that was originally added here
> E/WindowManager( 8178): 	at android.view.ViewRootImpl.<init>(ViewRootImpl.java:348)
> E/WindowManager( 8178): 	at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
> E/WindowManager( 8178): 	at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
> E/WindowManager( 8178): 	at android.app.Dialog.show(Dialog.java:286)
> E/WindowManager( 8178): 	at android.app.AlertDialog$Builder.show(AlertDialog.java:951)
> E/WindowManager( 8178): 	at org.apache.cordova.CordovaChromeClient.onJsAlert(CordovaChromeClient.java:143)
> E/WindowManager( 8178): 	at com.android.webview.chromium.WebViewContentsClientAdapter.handleJsAlert(WebViewContentsClientAdapter.java:606)
> E/WindowManager( 8178): 	at com.android.org.chromium.android_webview.AwContentsClientBridge.handleJsAlert(AwContentsClientBridge.java:73)
> E/WindowManager( 8178): 	at com.android.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native
Method)
> E/WindowManager( 8178): 	at com.android.org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:27)
> E/WindowManager( 8178): 	at android.os.Handler.dispatchMessage(Handler.java:102)
> E/WindowManager( 8178): 	at android.os.Looper.loop(Looper.java:136)
> E/WindowManager( 8178): 	at android.app.ActivityThread.main(ActivityThread.java:5017)
> E/WindowManager( 8178): 	at java.lang.reflect.Method.invokeNative(Native Method)
> E/WindowManager( 8178): 	at java.lang.reflect.Method.invoke(Method.java:515)
> E/WindowManager( 8178): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
> E/WindowManager( 8178): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
> E/WindowManager( 8178): 	at dalvik.system.NativeStart.main(Native Method)
> D/CordovaWebViewClient( 8178): onPageFinished(about:blank)
> D/CordovaActivity( 8178): onMessage(onPageFinished,about:blank)
> D/CordovaActivity( 8178): onMessage(exit,null)
> It looks like there is an attempt to show the alert dialog after the activity's onDestroy()
method has been called.
> When resuming the app by clicking on it's icon in the home screen or using the Multitask
button, the webview doesn't render completely, I see only a black screen with the usual status
bar. The app must be killed, and then it works fine after a restart. It appears that there
is a pretty small time window during the timeout in which this can be reproduced, something
on the order of 200ms.



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