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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CB-8758) WP8: splashscreen.hide() causes exception to be thrown
Date Sat, 25 Apr 2015 21:37:39 GMT


ASF subversion and git services commented on CB-8758:

Commit 62e92afae80c648a8018bde4e2b71a1ebe8de1d9 in cordova-plugin-splashscreen's branch refs/heads/master
from [~dpolivy]
[;h=62e92af ]

CB-8758 [wp8]: UnauthorizedAccessException on hide()

When calling hide() from JS, the attempt to access Popup could happen on
a background thread, which ends up throwing an
UnauthorizedAccessException about cross-thread access.

To address this, it's best to check the popup's state from within the UI


> WP8: splashscreen.hide() causes exception to be thrown
> ------------------------------------------------------
>                 Key: CB-8758
>                 URL:
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Plugin SplashScreen, WP8
>            Reporter: Dan Polivy
>            Assignee: Jesse MacFadyen
> When calling the hide() method on splashscreen, on WP8, the call to Popup.IsOpen throws
a TargetInvocationException due to invalid cross-thread access.
> I don't know the specifics, but most likely the threading model for how plugins are executed
has changed over time, exposing this exception.
> +		[System.Reflection.TargetInvocationException]	{System.Reflection.TargetInvocationException:
Exception has been thrown by the target of an invocation. ---> System.UnauthorizedAccessException:
Invalid cross-thread access.
>    at MS.Internal.XcpImports.CheckThread()
>    at System.Windows.DependencyObject.GetValueInternal(DependencyProperty dp)
>    at System.Windows.FrameworkElement.GetValueInternal(DependencyProperty dp)
>    at System.Windows.Controls.Primitives.Popup.get_IsOpen()
>    at WPCordovaClassLib.Cordova.Commands.SplashScreen.hide(String options)
>    --- End of inner exception stack trace ---
>    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature
sig, Boolean constructor)
>    at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters,
Object[] arguments)
>    at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr,
Binder binder, Object[] parameters, CultureInfo culture)
>    at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
>    at WPCordovaClassLib.Cordova.Commands.BaseCommand.InvokeMethodNamed(String methodName,
Object[] args)
>    at WPCordovaClassLib.Cordova.Commands.BaseCommand.InvokeMethodNamed(String callbackId,
String methodName, Object[] args)
>    at WPCordovaClassLib.Cordova.NativeExecution.<>c__DisplayClass6.<ProcessCommand>b__2()}

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