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POHow to safely turn WebView zooming on and off as needed
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  1. POHow to safely turn WebView zooming on and off as needed
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    copied!<p>As mentioned in this unanswered question: <a href="https://stackoverflow.com/questions/4908794/webview-throws-receiver-not-registered-android-widget-zoombuttonscontroller">WebView throws Receiver not registered: android.widget.ZoomButtonsController</a></p> <p>By turning the WebView zoom controls on and off as needed throws this:</p> <pre><code>java.lang.IllegalArgumentException: Receiver not registered: android.widget.ZoomButtonsController </code></pre> <p>For some users. I myself have not seen this crash, but I have seen it in the logs coming from devices in the wild. It doesn't happen super frequently, but it is a crash regardless. Any ideas?</p> <p>Thanks</p> <p><strong>Update: How to reproduce</strong></p> <p>I found how to reproduce this crash: <a href="http://code.google.com/p/android/issues/detail?id=15694" rel="nofollow noreferrer">http://code.google.com/p/android/issues/detail?id=15694</a></p> <p>I'll report back if I discover a workaround.</p> <hr> <p><strong>As requested, the full stack trace:</strong></p> <pre><code>java.lang.IllegalArgumentException: Receiver not registered: android.widget.ZoomButtonsController$1@487a4290 at android.app.ActivityThread$PackageInfo.forgetReceiverDispatcher(ActivityThread.java:793) at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:913) at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:331) at android.widget.ZoomButtonsController.setVisible(ZoomButtonsController.java:404) at android.widget.ZoomButtonsController$2.handleMessage(ZoomButtonsController.java:178) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4627) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>and another similar one:</p> <pre><code>java.lang.IllegalArgumentException: View not attached to window manager at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:391) at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:236) at android.view.Window$LocalWindowManager.removeView(Window.java:432) at android.widget.ZoomButtonsController.setVisible(ZoomButtonsController.java:406) at android.widget.ZoomButtonsController$2.handleMessage(ZoomButtonsController.java:178) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:5068) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) at dalvik.system.NativeStart.main(Native Method) </code></pre>
 

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