Develop Reference

Osmand build crash on debug

I imported the latest master folder (master branch 26-12-2014) to Android-Studio,Gradle build the project successfully after little fix (asset missing,inner fragment static error) then i launched the debugger on my device (samsung galaxy 3 min,Android 4.1.2),I expect to have Osmand running on my device but the application crashes and the log indicate that it happen on getting routing.xml file.
12-26 10:47:10.069 10508-10508/net.osmand.plus E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to create application net.osmand.plus.OsmandApplication: java.lang.IllegalStateException: java.lang.IllegalArgumentException
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4200)
at android.app.ActivityThread.access$1400(ActivityThread.java:134)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4867)
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:1007)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: java.lang.IllegalArgumentException
at net.osmand.router.RoutingConfiguration.getDefault(RoutingConfiguration.java:171)
at net.osmand.plus.helpers.AvoidSpecificRoads.getBuilder(AvoidSpecificRoads.java:44)
at net.osmand.plus.helpers.AvoidSpecificRoads.<init>(AvoidSpecificRoads.java:38)
at net.osmand.plus.OsmandApplication.onCreate(OsmandApplication.java:168)
Thanks.

Make sure that there is a folder named "router" inside your "OsmAnd/scr/net/osmand/" folder which contains the routing.xml file.
If not you can find the resources needed here

Android ZBar Exception only with Jenkins build

I have an android project with a QR scan activity. I use the ZBar library for this: http://sourceforge.net/projects/zbar/files/AndroidSDK/
If the project is built on a PC or Mac with exlipse, the app works fine.
If it's build by jenkins (same source from git) the app crashes.
The Exception I get is:
at controller.gui.activity.QRScanActivity.onCreate(Unknown Source)
at android.app.Activity.performCreate(Activity.java:4465)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
at android.app.ActivityThread.access$600(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
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)
Caused by: java.lang.NoSuchFieldError: no field with name='peer' signature='J' in class Lnet/sourceforge/zbar/ImageScanner;
at net.sourceforge.zbar.ImageScanner.init(Native Method)
at net.sourceforge.zbar.ImageScanner.<clinit>(Unknown Source)
... 16 more
I used the demo app for a base.
Is this a Jenkins config problem?
The Zbar library is not just a jar file, it's a C library with jni. So I have a jar file and 3 folders (for different architectures I think) and they have a libiconv.so and a libzbarjni.so files.

Add -keep class net.sourceforge.zbar.** { *; } to your proguard config file

I Dont know if you already figured it out, but this is a proguard issue. Seems your JNI classes are not being obfuscated correctly. You might need to change your proguard config to skip ZBar files.

What could be causing a ClassNotFoundException?

So I've been working on an app lately which runs fine on most devices. However, sometimes the app crashes at start up with the following error:
java.lang.RuntimeException: Unable to instantiate activity
ComponentInfo{com.mypackage.app/com.mypackage.app.activities.MainPager}:
java.lang.ClassNotFoundException: com.mypackage.app.activities.MainPager
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1995)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2096)
at android.app.ActivityThread.access$600(ActivityThread.java:138)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1207)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:4787)
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 de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException:
com.mypackage.app.activities.MainPager
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1986)
... 12 more
I get that this is because it can't find the class called MainPager. But how is that even possible? I mean, the class should be there.. I put it there myself :) . Why on earth is it not finding it?
EDIT: I think the cause may be that in my manifest I have android:package="com.mypackage.app" defined, but that my launch activity is in the package com.mypackage.app.activities. Currently testing this theory. Still weird that it only happens on some devices, though.
This solution won't work, since I then can't update the APK in Google Play (has to be the same package name in the manifest).

Since ADT update to revision 22 (May 2013) you have to check "Android Private Libraries" check box in Project -> Properties -> Java Build Path -> Order and Export in Eclipse for your older projects to get rid of this exception ...

in the manifest you add Activity name like this
android:name=".activities.MainPager"
because you have given package name
android:package="com.mypackage.app"

Now I am using ART runtime on Nexus 5, and I am getting ClassNotFound for some apps.
You can safely ignore those if that's the case for your users.

Errors related to Android NDK

Running this in my android device gives me these errors.
Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lffvideolivewallpaper/frankandrobot/com/NativeCalls;
Shutting down VM
threadid=1: thread exiting with uncaught exception (group=0x40ed42a0)
FATAL EXCEPTION: main
java.lang.ExceptionInInitializerError
at ffvideolivewallpaper.frankandrobot.com.VideoLiveWallpaper.onSharedPreferenceChanged(VideoLiveWallpaper.java:144)
at ffvideolivewallpaper.frankandrobot.com.VideoLiveWallpaper.onCreate(VideoLiveWallpaper.java:78)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:2404)
at android.app.ActivityThread.access$1600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1309)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
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:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.UnsatisfiedLinkError: Couldn't load avcore: findLibrary returned null
at java.lang.Runtime.loadLibrary(Runtime.java:365)
at java.lang.System.loadLibrary(System.java:535)
at ffvideolivewallpaper.frankandrobot.com.NativeCalls.(NativeCalls.java:42)
... 13 more
I think these errors are related to Android NDK. Can anyone guide me on this, keeping in mind that I have no prior knowledge of Android NDK and how it works.

This may happen if we install the app on a device where the previous version was already installed we always get this kind of error:
Just look at this similar problem : https://groups.google.com/d/topic/android-ndk/YmKly4zEMQ0/discussion

I found the reason why I was getting this error, because I did not build the native libraries. I used ndk-build and the errors got resolved.

Classnotfound exception for working app

I have a strange issue.I developed an android application with scan functionality.I reused some zxing code code for the scanning section. My app is working fine for all the device and emulater too.But after I uploaded it in market I am getting error on scan portion.My error report is
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:2191)
at android.view.View.performClick(View.java:2532)
at android.view.View$PerformClick.run(View.java:9291)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:4293)
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:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at android.view.View$1.onClick(View.java:2186)
... 11 more
Caused by: java.lang.ExceptionInInitializerError
at com.imotiva.Menu1.points(Menu1.java:46)
... 14 more
Caused by: java.lang.NoClassDefFoundError: com.qr.decoding.ResultMetadataType
at com.qr.scanning.CaptureActivity.<clinit>(CaptureActivity.java:92)
... 15 more
Still my code code is working in device but the same app in the market don't. Please help me friends...

At last I found the solution for my problem.gtumca-MAC's solution Android update 17 seems incompatible with external Jars worked for me.Created one folder named libs and add my core.jar .Now it's working fine.Thanks all.