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A strange Exception about notification: ClassCastException: RemoteViews$SetOnClickPendingIntent cannot be cast to RemoteViews$ReflectionAction

I have encounteredd a problem. I collect a exception message about notification for startForeground. It mainly appears on SamSung GT-I9300, API 15. Is there any clue about it ? Expect your fabulous analysis. Thanks
Bad notification for startForeground: java.lang.ClassCastException:
android.widget.RemoteViews$SetOnClickPendingIntent cannot be cast to
android.widget.RemoteViews$ReflectionAction
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1260)
android.os.Handler.dispatchMessage(Handler.java:99)
android.os.Looper.loop(Looper.java:137)
android.app.ActivityThread.main(ActivityThread.java:4424)
java.lang.reflect.Method.invokeNative(Native Method)
java.lang.reflect.Method.invoke(Method.java:511)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:592)
dalvik.system.NativeStart.main(Native Method)

webview crashs in 4.1.2 java.lang.IllegalArgumentException: bad parameter

java.lang.IllegalArgumentException: bad parameter
at org.apache.http.client.utils.URLEncodedUtils.parse(URLEncodedUtils.java:139)
at org.apache.http.client.utils.URLEncodedUtils.parse(URLEncodedUtils.java:76)
atandroid.webkit.AccessibilityInjector.getAxsUrlParameterValue(AccessibilityInjector.java:404)
at android.webkit.AccessibilityInjector.shouldInjectJavaScript(AccessibilityInjector.java:323)
at android.webkit.AccessibilityInjector.onPageFinished(AccessibilityInjector.java:282)
at android.webkit.WebViewClassic.onPageFinished(WebViewClassic.java:4259)
at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:325)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:153)
at android.app.ActivityThread.main(ActivityThread.java:5000)
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:821)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
at dalvik.system.NativeStart.main(Native Method)

This bug has been tracked as https://code.google.com/p/android/issues/detail?id=35100
It's a bug of android 4.1.2.
Quote:
"
Fixed in an internal build, to be released in the next major release.
"

NullPointer exception at android.support.v4.app.FragmentManagerImpl.makeInactive

I'm seeing a weird exception in Android Support Library - the stack trace is below. Any ideas what could be causing this? I'm unable to reproduce the exception on any of my devices, but there seem to be quite a few visible in the Google Play DevConsole.
java.lang.NullPointerException
at android.support.v4.app.FragmentManagerImpl.makeInactive(FragmentManager.java:1133)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1044)
at android.support.v4.app.FragmentManagerImpl.removeFragment(FragmentManager.java:1171)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:582)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1416)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:420)
at android.os.Handler.handleCallback(Handler.java:608)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:5045)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)

try check stack fragments in time rotate screen for example in onResume.

Exception in ActivityThread.setupGraphicsSupport()

I got the exception message from user.
java.lang.NullPointerException
at android.app.ActivityThread.setupGraphicsSupport(ActivityThread.java:3738)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3808)
at android.app.ActivityThread.access$1300(ActivityThread.java:127)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1197)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4507)
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:790)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)
He uses samsung galaxy S2 (ICS 4.0.3 with tegrak kernel and ADW launcher ex)
It's difficult to find what's the problem with this exception log.
Can anybody suggest a starting point to find why this exception raised.
Thanks.

Failed to register input channel - live wallpaper

I encountered similar problem as this.
The crash report is from Google Play and I can't reproduce it by myself. I tried to download Launcher Pro but that wasn't causing any troubles.
Here is the stack trace:
java.lang.RuntimeException: Failed to register input channel. Check logs for details.
at android.view.InputQueue.nativeRegisterInputChannel(Native Method)
at android.view.InputQueue.registerInputChannel(InputQueue.java:92)
at android.service.wallpaper.WallpaperService$Engine.updateSurface(WallpaperService.java:534)
at android.service.wallpaper.WallpaperService$Engine.attach(WallpaperService.java:670)
at android.service.wallpaper.WallpaperService$IWallpaperEngineWrapper.executeMessage(WallpaperService.java:898)
at com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:61)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3806)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)