Develop Reference

java.lang.NoClassDefFoundError when calling DolbyAudioProcessing.getDolbyAudioProcessing

I have integrated Dolby_audio_plugin_api_v1.1.1.0 into my Android app and am seeing this stack trace in a handful of cases:
java.lang.NoClassDefFoundError: com.dolby.dap.DsClientManager$AppActivityLifecycleCallbacks
at com.dolby.dap.DsClientManager.(DsClientManager.java:196)
at com.dolby.dap.DolbyAudioProcessing.(DolbyAudioProcessing.java:143)
at
com.dolby.dap.DolbyAudioProcessing.getDolbyAudioProcessing(DolbyAudioProcessing.java:125)
at com.houseofhighfives.saddest_trombone.Main.onCreate(Main.java:44)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
at android.app.ActivityThread.access$1500(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
at dalvik.system.NativeStart.main(NativeStart.java)
Following the examples on the Dolby dev site, this is the call that tries to initialize the DolbyAudioProcessing instance:
mDolbyAudioProcessing = DolbyAudioProcessing.getDolbyAudioProcessing(this, PROFILE.MUSIC, this);
According to Crashlytics, all instances were on a Samsung GT-S5360B or GT-S5360L, running Android 2.3.6.
Very minor thing, given how infrequent it is, but it makes me curious. Has anyone else seen this before?

So this turned out to be a because the AppActivityLifecycleCallbacks is an ICS API Level interface. I should have been doing SDK_LEVEL check before calling DolbyAudioProcessing.getDolbyAudioProcessing(). – mmcmahon

Android weird "divide by zero" exception in ListView

I am using GA to tracking my applications. I have noticed that there is a weird exception reported sometimes on every release. The reported calling stack shows that it seems to be the Android issue of the user's device(I can never reproduce this issue). I tried hard but still cannot find a clue, is there anyone have some experience with this problem?
Thread: main, Exception: java.lang.ArithmeticException: divide by zero
at android.widget.AbsListView$FlingRunnable.run(AbsListView.java:2937)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(Native Method)

admob null pointer exception on few devices

My apps are force closing on few devices(samsung & sony) after implementing interstitial ads and the stack traces from developer console is as follows.
java.lang.NullPointerException
at com.google.ads.a.f$a.run(SourceFile:128)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)
I don't understand why it is happening. Can someone help?

Use the new Google Play Services library which now include the Admob classes.
The Admob package has changed so your imports will need to be adjusted to
import com.google.android.gms.ads.*;

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)

How to track down an error in an Android app?

I have recently put an app on google play and some people have reported errors. I have never had an error with this app and I dont know what is causing it. This is the error that it says:
android.content.ActivityNotFoundException: No Activity found to handle Intent {act=android.intent.action.VIEW dat=http://a47.video2.blip.tv/12990004359402/RoosterTeeth-RedVsBlueEpisode1933.flv?brs=1011&bri=1.4 typ=video/flv }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1408)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
at android.app.Activity.startActivityForResult(Activity.java:2817)
at android.app.Activity.startActivity(Activity.java:2923)
at red.vs.blue.videos.SeasonOneListView.onListItemClick(SeasonOneListView.java:157)
at android.app.ListActivity$2.onItemClick(ListActivity.java:321)
at android.widget.AdapterView.performItemClick(AdapterView.java:284)
at android.widget.ListView.performItemClick(ListView.java:3382)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
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:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(Native Method)
I would really like some help. I am a noob so if there is more info you need about this problem to help me feel free to ask.

Most likely some users don't have a native video player in their phone.
Weird, but possible.

Yes. Your users with the errors probably don't have a video player installed than can handle a URL with the file type of video/flv.