Develop Reference

Firebase Authentication causing Android fatal exception

I just finished integrating Firebase real time data base and Authentication into my Android Studio application. It ran successfully two or three times on my Google Nexus 7 genymotion emulator that has google play services on it. Then I tried launching it again and I started getting the below error:
06-25 16:50:46.994 7699-7699/
com.careersvirtualsolutions.uprate E/AndroidRuntime:
FATAL EXCEPTION: main
java.lang.NullPointerException
at com.google.firebase.auth.FirebaseAuth$1.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
I think this has something to do with the Firebase Authentication SDK but I am not sure.
Do you know what this is caused by? How can I solve it?

I actually figured it out, the problem was with the AuthStateListener.
So if you're having a similar issue, try testing your project with the AuthStateListener commented out and see if it launches without crashing. If it does you can then figure out how to replace the existing listener.
Hope this helps in some way!

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

Sinch Android Messaging Tutorial App crashes upon login and client isn't started

The android tutorial app keeps crashing once a user has been logged in. Client also doesn't start.
Logcat Says
08-03 12:45:16.183 1322-1322/com.example.messagingtutorialskeleton W/linker﹕ libhoudini.so has
text relocations. This is wasting memory and is a security risk. Please fix.
08-03 12:45:16.655 1322-1322/com.example.messagingtutorialskeleton A/libc﹕ Fatal signal 11
(SIGSEGV) at 0x000000b4 (code=1), thread 1322 (utorialskeleton)
This occurs when using a Genymotion emulator.
When using the standard android virtual device, the logcat reads:
08-03 08:45:00.705 2406-2406/com.example.messagingtutorialskeleton E/AndroidRuntime﹕ FATAL
EXCEPTION: main
Process: com.example.messagingtutorialskeleton, PID: 2406
java.lang.UnsatisfiedLinkError: Couldn't load sinch-android-rtc from loader
dalvik.system.PathClassLoader[DexPathList[[zip file
"/data/app/com.example.messagingtutorialskeleton-2.apk"],nativeLibraryDirectories=[/data/app-
lib/com.example.messagingtutorialskeleton-2, /system/lib]]]: findLibrary returned null
at java.lang.Runtime.loadLibrary(Runtime.java:358)
at java.lang.System.loadLibrary(System.java:526)
at com.sinch.android.rtc.internal.natives.jni.UserAgentFactory.<clinit>
(UserAgentFactory.java:9)
at
com.sinch.android.rtc.internal.client.ServiceFactory.createUserAgent(ServiceFactory.java:43)
at com.sinch.android.rtc.internal.client.DefaultSinchClient.<init>
(DefaultSinchClient.java:144)
at
com.sinch.android.rtc.internal.client.InternalSinchClientFactory.createSinchClient(InternalSinchClie ntFactory.java:13)
at
com.sinch.android.rtc.DefaultSinchClientBuilder.build(DefaultSinchClientBuilder.java:95)
at
com.sinch.messagingtutorialskeleton.MessageService.startSinchClient(MessageService.java:58)
at
com.sinch.messagingtutorialskeleton.MessageService.onStartCommand(MessageService.java:42)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2702)
at android.app.ActivityThread.access$2100(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1293)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
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:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Whats the problem? Thanks.

Yup i got the fix!...you just need to store all your Sinch architecture files into jniLibs folder as indicated in the tutorial.
The folder hence will include three folders which come along with the SDK namely;
1. Armeabi
2 Armeabi-v7a
3. X86
The error that you're getting is due to the missing x86 folder. Hence Do the needful and if you get stuck then please ask! 😊

The Sinch SDK isn't tested on the Genymotion emulator because it doesn't yet support x86. Here is a full explanation: https://github.com/sinch/android-messaging-tutorial/issues/1#issuecomment-50063315
Have you tried testing the app on a physical device?

Android Service Exchange always crashs

I'm getting a crash always when I install or uninstall an app that use Sync Service, like Facebook, whatsup, etc.
"Unfortunately, Exchange Services has stopped."
I don't know why, but it just happens for some devices, in my case all of then are Android 4.4.2.
First I thought it's my app's fault, but it doesn't make sense once I uninstall my app and the problem continues happening for others apps.
Do you know something about it?
Thank you.
02-07 14:31:49.864 3015-3015/? E/ActivityThread﹕ Failed to find provider info for com.google.android.email.provider
02-07 14:31:49.864 3015-3015/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.google.android.exchange, PID: 3015
java.lang.RuntimeException: Unable to create application com.android.exchange.Exchange: java.lang.IllegalArgumentException: Unknown URI content://com.google.android.email.provider
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4347)
at android.app.ActivityThread.access$1500(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
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:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalArgumentException: Unknown URI content://com.google.android.email.provider
at android.content.ContentResolver.call(ContentResolver.java:1352)
at com.android.exchange.Exchange.onCreate(Exchange.java:34)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4344)
at android.app.ActivityThread.access$1500(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
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:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)

I found what was happening!
The problem occurs by device when there are sync accounts registered, but the Exchange Service cannot find any application to answer the URI, in my case it was "content://com.google.android.email.provider", to fix it I checked my disable applications and there was it, my default email application was disable. I just enable it again and the problem never occurs again.

Go to Settings > Apps > ALL> Exchange Services > Clear Cache and try opening it. When it opens, check once.

I had that problem. now I’m using a good app called Mailwise. it’s a free email app, very convenient for businesses, you can easily set up multiple email accounts, and it works great with Exchange.
https://play.google.com/store/apps/details?id=com.syntomo.email&hl=en

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.