My Xamarin Android app is already in production, people are downloading it from Google play and everything seems to be fine, except from time to time I get following errors in Google Play Developer Console :
java.lang.RuntimeException: Unable to instantiate application mono.android.app.Application: java.lang.ClassNotFoundException: Didn't find class "mono.android.app.Application" on path: DexPathList[[],nativeLibraryDirectories=[/vendor/lib, /system/lib, /vendor/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:559)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5119)
at android.app.ActivityThread.access$1500(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1418)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5867)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "mono.android.app.Application" on path: DexPathList[[],nativeLibraryDirectories=[/vendor/lib, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.app.Instrumentation.newApplication(Instrumentation.java:982)
at android.app.LoadedApk.makeApplication(LoadedApk.java:550)
... 11 more
or similar but slightly different version:
java.lang.RuntimeException: Unable to instantiate application mono.android.app.Application: java.lang.ClassNotFoundException: Didn't find class "mono.android.app.Application" on path: /mnt/asec/myapp-1/pkg.apk
at android.app.LoadedApk.makeApplication(LoadedApk.java:504)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4563)
at android.app.ActivityThread.access$1400(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5317)
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:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "mono.android.app.Application" on path: /mnt/asec/myapp-1/pkg.apk
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newApplication(Instrumentation.java:985)
at android.app.LoadedApk.makeApplication(LoadedApk.java:499)
... 11 more
I've got zero google results for ClassNotFoundException + mono.android.app.Application. According to Developer console it comes from android 4.2 and 4.4., different devices (HTC, Samsung..), even from devices which i tested and everything works (HTC One).
Any ideas? Is this bug in mono? or Xamarin? Or am I doing something wrong?
Whenever xamarin app install in the device it is find to mono runtime support lib, if it is not installed in the device then it will stop to run so, if u have run without mono installation you can change some settings on:
Property => Android Option
Go to Packaging and select only one Bundle assemblies into native code, and also go to linker and select linking is None then run it.
I hope it might work.
Related
When I try to run my existing application (using Android Studio 3.1.3) on Android 4.4.2 it is not running and showing this error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.project, PID: 9428
java.lang.NoClassDefFoundError: uz/uno/models/Transaction
at java.lang.Class.getDeclaredFields(Native Method)
at java.lang.Class.getDeclaredFields(Class.java:610)
at com.activeandroid.util.ReflectionUtils.getDeclaredColumnFields(ReflectionUtils.java:73)
at com.activeandroid.TableInfo.<init>(TableInfo.java:66)
at com.activeandroid.ModelInfo.loadModelFromMetaData(ModelInfo.java:101)
at com.activeandroid.ModelInfo.<init>(ModelInfo.java:61)
at com.activeandroid.Cache.initialize(Cache.java:66)
at com.activeandroid.ActiveAndroid.initialize(ActiveAndroid.java:44)
at com.activeandroid.ActiveAndroid.initialize(ActiveAndroid.java:34)
at com.activeandroid.content.ContentProvider.onCreate(ContentProvider.java:39)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1591)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1562)
at android.app.ActivityThread.installProvider(ActivityThread.java:5233)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4827)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4710)
at android.app.ActivityThread.access$1600(ActivityThread.java:174)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1367)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5593)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "my.project.models.Transaction" on path: DexPathList[[zip file "/data/app/my.project-5.apk"],nativeLibraryDirectories=[/data/app-lib/my.project-5, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:67)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
Pay attention to the exception:
Caused by: java.lang.ClassNotFoundException: Didn't find class "my.project.models.Transaction" on path: DexPathList[[zip file "/data/app/my.project-5.apk"],nativeLibraryDirectories=[/data/app-lib/my.project-5, /vendor/lib, /system/lib]]
I found out that everytime when I try to run and it crashes the number in the exception increases my.project-5. (First time it was my.project-1, then my.project-2, and so on).
What is the problem and how can I fix this error?
Note: This error is also occuring on android 4.3. However, for android 5.0 and above it is working well.
Edit: Answer
After doing some research, I found the answer here:
NoClassDefFoundError with Android Studio on Android 4
https://developer.android.com/studio/build/multidex
I think you have a conflict with some code that requires at least android 5.0 but you are running in 4.4.2.
See the documentation here: https://developer.android.com/training/basics/supporting-devices/platforms and here: https://developer.android.com/guide/practices/compatibility
Post the code so we can help you better.
When I try to run my app on Android 4.4.2 it is giving me this error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: my.package, PID: 24775
java.lang.NoClassDefFoundError: my/package/models/Transaction
at java.lang.Class.getDeclaredFields(Native Method)
at java.lang.Class.getDeclaredFields(Class.java:610)
at com.activeandroid.util.ReflectionUtils.getDeclaredColumnFields(ReflectionUtils.java:73)
at com.activeandroid.TableInfo.<init>(TableInfo.java:66)
at com.activeandroid.ModelInfo.loadModelFromMetaData(ModelInfo.java:101)
at com.activeandroid.ModelInfo.<init>(ModelInfo.java:61)
at com.activeandroid.Cache.initialize(Cache.java:66)
at com.activeandroid.ActiveAndroid.initialize(ActiveAndroid.java:44)
at com.activeandroid.ActiveAndroid.initialize(ActiveAndroid.java:34)
at com.activeandroid.content.ContentProvider.onCreate(ContentProvider.java:39)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1591)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1562)
at android.app.ActivityThread.installProvider(ActivityThread.java:5233)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4827)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4710)
at android.app.ActivityThread.access$1600(ActivityThread.java:174)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1367)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5593)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "my.package.models.Transaction" on path: DexPathList[[zip file "/data/app/my.package-1.apk"],nativeLibraryDirectories=[/data/app-lib/my.package-1, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:67)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
However, for Android 5.0 and above it is working without any errors.
What is the reason and how can I fix it?
Note: there is a similar question on StackOverflow but it does not have any answers.
You can find the answer for this question here:
NoClassDefFoundError with Android Studio on Android 4
https://developer.android.com/studio/build/multidex
Try this
Just go to disable Instant Run Go to
File -> Settings -> Build,Execution, Deployment -> Instant Run ->
Uncheck the checkbox for instant run
Run your app once.
In Manifest I declared
<application
android:name=com.example.App>
When the app starts, sometimes this crash happens:
java.lang.RuntimeException: Unable to instantiate application com.example.App: java.lang.ClassNotFoundException: Didn't find class "com.example.App" on path: DexPathList[[zip file "/mnt/asec/com.example.myapp-1/pkg.apk"],nativeLibraryDirectories=[/mnt/asec/com.example.myapp-1/lib, /vendor/lib, /system/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:516)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4514)
at android.app.ActivityThread.access$1500(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1381)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:641)
at dalvik.system.NativeStart.main(Native Method)
Is it possible to fix it somehow?
This doesn't seems to be an app crash. This is just a verbose message raised when dalvik reinstall the apk.It won't occur on end-user's device.To fix it on your development machine, just clean and rebuild.
I have integrated Telegram in one of my apps.
Its working fine on many devices and Android version, but crashing on Android 4.4, Samsung Galaxy S3.
The error log that I am getting is:
org/telegram/SQLite/SQLitePreparedStatement
java.lang.Runtime.nativeLoad(Native Method)
java.lang.Runtime.doLoad(Runtime.java:421)
java.lang.Runtime.loadLibrary(Runtime.java:362)
java.lang.System.loadLibrary(System.java:526)
org.telegram.android.NativeLoader.initNativeLibs(NativeLoader.java:196)
org.telegram.messenger.ApplicationLoader.onCreate(ApplicationLoader.java:188)
android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007)
android.app.ActivityThread.handleBindApplication(ActivityThread.java:4368)
android.app.ActivityThread.access$1500(ActivityThread.java:138)
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1296)
android.os.Handler.dispatchMessage(Handler.java:102)
android.os.Looper.loop(Looper.java:149)
android.app.ActivityThread.main(ActivityThread.java:5045)
java.lang.reflect.Method.invokeNative(Native Method)
java.lang.reflect.Method.invoke(Method.java:515)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:610)
dalvik.system.NativeStart.main(Native Method)
Caused by:
java.lang.ClassNotFoundException: Didn't find class "org.telegram.SQLite.SQLitePreparedStatement" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.bcd.app-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.bcd.app-1, /vendor/lib, /system/lib, /system/lib/arm]]
dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
java.lang.ClassLoader.loadClass(ClassLoader.java:497)
java.lang.ClassLoader.loadClass(ClassLoader.java:457)
java.lang.Runtime.nativeLoad(Native Method)
java.lang.Runtime.doLoad(Runtime.java:421)
java.lang.Runtime.loadLibrary(Runtime.java:362)
java.lang.System.loadLibrary(System.java:526)
org.telegram.android.NativeLoader.initNativeLibs(NativeLoader.java:196)
Any help ?
Before all, as the above error seems, there's naming problem in the native source code and maybe it emanates from changing in package name of the project.
You should change package name in all native source code and then rebuild it.
Replace in path the two followings cases in jni folder:
Java_org_telegram_
org/telegram/
with the style of naming your packages, like the examples below:
Java_org_telegram_example_
org/telegram/example/
In the above example, the package name is:
org.telegram.example.messenger
In Google Play Developer Console I see this crash:
java.lang.RuntimeException: Unable to instantiate application com.example.MyApp: java.lang.ClassNotFoundException: Didn't find class "com.example.MyApp" on path: DexPathList[[zip file "/mnt/asec/com.example.testapp-1/pkg.apk"],nativeLibraryDirectories=[/mnt/asec/com.example.testapp-1/lib, /vendor/lib, /system/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:516)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4545)
at android.app.ActivityThread.access$1500(ActivityThread.java:160)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1390)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5330)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.MyApp" on path: DexPathList[[zip file "/mnt/asec/com.example.testapp-1/pkg.apk"],nativeLibraryDirectories=[/mnt/asec/com.example.testapp-1/lib, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.app.Instrumentation.newApplication(Instrumentation.java:975)
at android.app.LoadedApk.makeApplication(LoadedApk.java:511)
... 11 more
Suppressed: java.io.IOException: unable to open DEX file
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:296)
at dalvik.system.DexFile.<init>(DexFile.java:80)
at dalvik.system.DexFile.<init>(DexFile.java:59)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:263)
at dalvik.system.DexPathList.makeDexElements(DexPathList.java:230)
at dalvik.system.DexPathList.<init>(DexPathList.java:112)
at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:48)
at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:65)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:57)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:326)
at android.app.LoadedApk.makeApplication(LoadedApk.java:508)
... 11 more
This crash occurs mostly on Android versions 4.4 and 4.2.
This answer suggests that this crash occurs when the apk is updated by dalvik. It seems to be a low-priority Android bug.
Are there any workarounds for this?
Does it help to set
<application
android:allowBackup="false"
in Manifest.xml?
(Maybe the backup of application is stored on SD-card, which is causing the problem on apk update).
This error usually occurs when you declare a class extending Application (android.app.Application) and then user android:name="thatClassName"
But if your App can't access it class fully. This error can occur
Try Making the class public only
It will make the application user that class globally