Unexplainable ClassCastException in android.widget.ProgressBar.onRestoreInstanceState
android, android-widget
Solution
I've seen similar issues to this before, and it's because you have two id's that share the same name.
The `onRestoreInstanceState` has performed the `findViewById` method and the first view to be found was not the `ProgressView`.
Double check that your application does not reuse the same ID in two different places
Problem
I've had my application out in the store for a while, but it seems it crashes occasionally according to the crash reports in the Developer Console, saying: `java.lang.ClassCastException in android.widget.ProgressBar.onRestoreInstanceState` with the stack trace: ``` java.lang.RuntimeException: Unable to start activity ComponentInfo{com.company.myapp/com.mycompany.myapp.activity.MyActivity}: java.lang.ClassCastException: android.view.AbsSavedState$1 cannot be cast to android.widget.ProgressBar$SavedState at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1996) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2023) at android.app.ActivityThread.access$600(ActivityThread.java:127) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1174) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4503) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.ClassCastException: android.view.AbsSavedState$1 cannot be cast to android.widget.ProgressBar$SavedState at android.widget.ProgressBar.onRestoreInstanceState(ProgressBar.java:1093) at android.view.View.dispatchRestoreInstanceState(View.java:9975) at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2408) at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2408) at android.view.View.restoreHierarchyState(View.java:9951) at com.android.internal.policy.impl.PhoneWindow.restoreHierarchyState(PhoneWindow.java:1611) at android.app.Activity.onRestoreInstanceState(Activity.java:908) at android.app.Activity.performRestoreInstanceState(Activity.java:880) at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1102) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974) ... 11 more ``` The reason for these crashes eludes me, and I can't reproduce it on any of my devices. I don't have a `onRestoreInstanceState` overridden anywhere either. Can anyone point me in a direction that makes sense?