Actionbarsherlock Main SherlockFragmentActivity ClassNotFoundException - intellij-idea

I have added Actionbarsherlock 4.3.1 to an existing project in IntelliJ. With some dificulties to begin with. There are no errors and the app compiles, but i am getting a runtime error on startup and the app crashes.
My Main Screen now extends SherlockFragmentActivity, before ABS i had FragmentActivity and everything was working fine. I changed all the Fragments to SherlockFragments and am getting no errors as mentioned. this is my error log. What am i missing?
07-08 13:31:37.363: ERROR/AndroidRuntime(1352): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.adix.Gesetze/com.adix.Gesetze.MainScreen}: java.lang.ClassNotFoundException: com.adix.Gesetze.MainScreen
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2024)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
at android.app.ActivityThread.access$600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
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.ClassNotFoundException: com.adix.Gesetze.MainScreen
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:1057)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2015)
Am happy to provide additional info if needed.

I resolved it by changing the scope of the support library to compile. I had it on provide when i was trying arround with a other issue i had with ABS 4.3.1

Related

Android KeyStore crashes in Android Instant App

val masterKey =
MasterKey
.Builder(applicationContext)
.setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
.build()
Running this code in an Instant App crashes my app with the following Stack Trace:
2020-12-21 13:07:29.654 28949-28949/com.example.instantappandroidkeystore E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.instantappandroidkeystore, PID: 28949
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.instantappandroidkeystore/com.example.instantappandroidkeystore.MainActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'int android.security.keystore.IKeystoreService.exist(java.lang.String, int)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3448)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:237)
at android.app.ActivityThread.main(ActivityThread.java:7814)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1068)
Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'int android.security.keystore.IKeystoreService.exist(java.lang.String, int)' on a null object reference
at android.security.KeyStore.contains(KeyStore.java:408)
at android.security.keystore.AndroidKeyStoreSpi.engineContainsAlias(AndroidKeyStoreSpi.java:1038)
at java.security.KeyStore.containsAlias(KeyStore.java:1293)
at androidx.security.crypto.MasterKeys.keyExists(MasterKeys.java:154)
at androidx.security.crypto.MasterKeys.getOrCreate(MasterKeys.java:96)
at androidx.security.crypto.MasterKey$Builder.buildOnM(MasterKey.java:357)
at androidx.security.crypto.MasterKey$Builder.build(MasterKey.java:314)
at com.example.instantappandroidkeystore.MainActivity.onCreate(MainActivity.kt:32)
at android.app.Activity.performCreate(Activity.java:7955)
at android.app.Activity.performCreate(Activity.java:7944)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147) 
at android.os.Handler.dispatchMessage(Handler.java:107) 
at android.os.Looper.loop(Looper.java:237) 
at android.app.ActivityThread.main(ActivityThread.java:7814) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1068) 
I have no luck finding this issue in StackOverflow, but I have found it in Google Issue Tracker, but with no response. So I created submitted an issue to Google with more information. https://issuetracker.google.com/issues/176085956
Has anyone encounter this issue and was able to solve it.
My working environment is:
Mac OS 10.15.7
Android Studio 4.0.1
Samsung A70
Android version 10
While this is not documented formally on developer.android forum, looks like AndroidKeyStore access is restricted for instant apps. I came across this link https://www.reddit.com/r/androiddev/comments/7a4tdw/why_no_hardware_backed_keystore_in_instant_apps/
This is quite strange that keystore is restricted and no android documentation explains it. I am not sure on an alternative to accessing KeyStore as we have lot of dependency on keystore for our regular app (non instant) and I can't think of a better option. Looking forward for suggestions !

Geoserver 2.14+ fails on Glassfish4+ - Anyone succeeded with this?

During hardware migration, thought it sensible to upgrade Geoserver from 2.13.0 to 2.14.2 on Glassfish 4.0 hoping to cure flakiness.
JVM is configured to use a non-standard data directory using JVM parameter:
-DGEOSERVER_DATA_DIR=/geoserver
Using the .war downloaded from Geoserver.org, deployment fails
2.15.x exhibits the same failure
2.13.0 deploys and runs, albeit with some flakiness (similar stack track shown on the home-page of geoserver once logged in)
The issue appears platform independent, environments used:
Windows 10 X64 running Oracle Java 1.8.0_161 on Glassfish 4 OR Glassfish 5 (including fresh out-of box installs of Glassfish)
CentOS 7 running OpenJDK 1.8.0_222 on Glassfish 4
The WAR did deploy on a localhost (W10) install of TomCat, albeit without the custom data directory set
If latest GeoServer builds could be made to work on Glassfish 4, this would save considerable time and expense
Any suggestions appreciated
Severe: Exception during lifecycle processing
java.lang.Exception: java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'gwcFacade' defined in URL [jar:file:/E:/glassfish-4.0/glassfish/domains/domain1/applications/geoserver/WEB-INF/lib/gs-gwc-2.14.5.jar!/applicationContext.xml]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.geoserver.gwc.GWC]: Constructor threw exception; nested exception is java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkNotNull(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
at com.sun.enterprise.web.WebApplication.start(WebApplication.java:168)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:122)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:291)
at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:352)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:497)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:219)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:491)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:527)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:523)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:522)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:546)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1423)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1500(CommandRunnerImpl.java:108)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1762)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1674)
at org.glassfish.admin.rest.resources.admin.CommandResource.executeCommand(CommandResource.java:396)
at org.glassfish.admin.rest.resources.admin.CommandResource.execCommandSimpInMultOut(CommandResource.java:234)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:125)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:152)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:91)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:346)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:341)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:101)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:224)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946)
at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:331)
at org.glassfish.admin.rest.adapter.JerseyContainerCommandService$3.service(JerseyContainerCommandService.java:165)
at org.glassfish.admin.rest.adapter.RestAdapter.service(RestAdapter.java:181)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:246)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:748)
Severe: Exception while loading the app
Severe: Undeployment failed for context /geoserver
Warning: The web application [/geoserver] registered the JDBC driver [org.h2.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Severe: The web application [/geoserver] created a ThreadLocal with key of type [java.lang.ThreadLocal.SuppliedThreadLocal] (value [java.lang.ThreadLocal$SuppliedThreadLocal#e524836]) and a value of type [org.geowebcache.storage.CompositeBlobStore.StoreSuitabilityCheck] (value [EXISTING]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Severe: Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'gwcFacade' defined in URL [jar:file:/E:/glassfish-4.0/glassfish/domains/domain1/applications/geoserver/WEB-INF/lib/gs-gwc-2.14.5.jar!/applicationContext.xml]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.geoserver.gwc.GWC]: Constructor threw exception; nested exception is java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkNotNull(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
The reason why you are seeing this is because the application you are trying to deploy packages a different Google Guava version than the one that Glassfish ships with. Unfortunately Glassfish favours its own packaged version which does not have the method com.google.common.base.Preconditions.checkNotNull(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;).
There exist some (more or less involved) workarounds.
https://github.com/eclipse-ee4j/glassfish/issues/20850
Since you seem to have a WAR archive, this comment https://github.com/eclipse-ee4j/glassfish/issues/20850#issuecomment-422010251 suggests that it might be enough to disable the classloader delegation in the glassfish-web.xml. Maybe you are lucky and this is indeed helping with your WAR file.
Otherwise you'll have to switch to Payara which seems to have this bug fixed since some time.

Error while Debugging application on Windows OS or Android

I'am having a problem with JS Debugger on Windows or Android, when I debug the app crashes. Every time I try to reopen it, the app crashes. This is my log cat:
2019-02-04 12:48:27.135 26780-26833/com.cmcj E/AndroidRuntime: FATAL EXCEPTION: mqt_js
Process: com.cmcj, PID: 26780
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/firebase/FirebaseApp;
at io.invertase.firebase.RNFirebaseModule.getConstants(RNFirebaseModule.java:158)
at com.facebook.react.bridge.JavaModuleWrapper.getConstants(JavaModuleWrapper.java:138)
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29)
at android.os.Looper.loop(Looper.java:154)
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192)
at java.lang.Thread.run(Thread.java:761)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.FirebaseApp" on path: DexPathList[[zip file "/data/app/com.cmcj-1/base.apk"],nativeLibraryDirectories=[/data/app/com.cmcj-1/lib/arm, /data/app/com.cmcj-1/base.apk!/lib/armeabi-v7a, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at io.invertase.firebase.RNFirebaseModule.getConstants(RNFirebaseModule.java:158) 
at com.facebook.react.bridge.JavaModuleWrapper.getConstants(JavaModuleWrapper.java:138) 
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 
at android.os.Handler.handleCallback(Handler.java:751) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:29) 
at android.os.Looper.loop(Looper.java:154) 
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:192) 
at java.lang.Thread.run(Thread.java:761) 
It does look like the linking went wrong after linking firebase. You need to make sure that everything is in place in MainApplication (especially the namespaces from where classes are taken).

React Native Android - "Could not get BatchedBridge, make sure your bundle is packaged properly"

Running on Android - I can no longer get my app to build. I've tried 15+ ideas on stack overflow with similar batchedbridge errors'.
Results - after packaging:
- Red error screen popups up with "Could not get BatchedBridge, make sure your bundle is packaged properly” (with no other callstack details) and then a second later get a blank white screen.
Results - after the error and then reloading from the app dev tools menu:
- Could not connect to development server
react-native version 0.40.0 npm=5.0.3 node=v7.4.0
The app was working previously for months so i'm guessing connected to a recent change, version problem, cache problem, npm version or reactnative version?
Tried adb reverse tcp:8081 tcp:8081
Tried npm cache clean
Tried on emulator and device - same issue
Tried closing all react packagers
Made sure no other react native apps/packagers running
Android app is building OK in Android Studio (without react native)
Looking in the logcat I seem some red flags but not sure if these problems are new or were previously there:
- Lots of 'ViewManagerPropertyUpdater: Could not find generated setter for class com.facebook.react.views.art.???????' etc
- React: The packager does not seem to be running as we got an IOException requesting its status: Connection reset
Here's the logcat snippet and stack trace from the app when it tries to start - if you need more of the logcat let me know (my attempt to add it here didn't work).
iceapp.challengeme ic=null D/FA: Connected to remote service W/unknown:ViewManagerPropertyUpdater: Could not find generated setter for class com.facebook.reactnative.androidsdk.FBLoginButtonManager V/FA: Processing queued up service tasks: 2 W/unknown:ViewManagerPropertyUpdater: Could not find generated setter for class com.facebook.reactnative.androidsdk.FBSendButtonManager W/art: Before Android 4.1, method boolean com.facebook.share.widget.ShareButtonBase.canShare() would have incorrectly overridden the package-private method in android.widget.TextView W/unknown:ViewManagerPropertyUpdater: Could not find generated setter for class com.facebook.reactnative.androidsdk.FBShareButtonManager
E/unknown:React: Exception in native call from JS
com.facebook.react.devsupport.JSException: Could not get BatchedBridge, make sure your bundle is packaged correctly
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31)
at android.os.Looper.loop(Looper.java:154)
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196)
at java.lang.Thread.run(Thread.java:762)
Caused by: com.facebook.jni.CppException: Could not get BatchedBridge, make sure your bundle is packaged correctly
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 
at android.os.Handler.handleCallback(Handler.java:751) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31) 
at android.os.Looper.loop(Looper.java:154) 
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196) 
at java.lang.Thread.run(Thread.java:762)  W/unknown:React: Packager connection already open, nooping. W/unknown:React: Inspector connection already open, nooping. E/unknown:React: Exception in native call
java.lang.RuntimeException: Error calling function: RCTDeviceEventEmitter:emit
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31)
at android.os.Looper.loop(Looper.java:154)
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196)
at java.lang.Thread.run(Thread.java:762)
Caused by: java.lang.RuntimeException: Empty Optional cannot be unwrapped
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 
at android.os.Handler.handleCallback(Handler.java:751) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31) 
at android.os.Looper.loop(Looper.java:154) 
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196) 
at java.lang.Thread.run(Thread.java:762)  E/unknown:React: Exception in native call
java.lang.RuntimeException: Error calling function: AppRegistry:runApplication
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31)
at android.os.Looper.loop(Looper.java:154)
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196)
at java.lang.Thread.run(Thread.java:762)
Caused by: java.lang.RuntimeException: Empty Optional cannot be unwrapped
at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 
at android.os.Handler.handleCallback(Handler.java:751) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31) 
at android.os.Looper.loop(Looper.java:154) 
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196) 
at java.lang.Thread.run(Thread.java:762) 

java.lang.IllegalAccessError on launch of react native activity in release mode

I have added one React Native screen to my existing android project.
Copying the proguard settings related to react native from
https://github.com/facebook/react-native/blob/master/local-cli/generator-android/templates/src/app/proguard-rules.pro WORKS.
However I want to enable obfuscation for my project and hence commented out the line -dontobfuscate
After this, when I deploy the release build in my nexus device, I get this error :
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #4
Process: com.sampleapp, PID: 2463
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.IllegalAccessError: Method 'void android.support.v4.net.ConnectivityManagerCompat.<init>()' is inaccessible to class 'com.facebook.react.modules.netinfo.NetInfoModule' (declaration of 'com.facebook.react.modules.netinfo.NetInfoModule' appears in /data/app/com.sampleapp-1/base.apk)
at com.facebook.react.modules.netinfo.NetInfoModule.<init>(NetInfoModule.java:55)
at com.facebook.react.shell.MainReactPackage.createNativeModules(MainReactPackage.java:67)
at com.facebook.react.ReactInstanceManagerImpl.processPackage(ReactInstanceManagerImpl.java:793)
at com.facebook.react.ReactInstanceManagerImpl.createReactContext(ReactInstanceManagerImpl.java:730)
at com.facebook.react.ReactInstanceManagerImpl$ReactContextInitAsyncTask.doInBackground(ReactInstanceManagerImpl.java:5091)
at com.facebook.react.ReactInstanceManagerImpl$ReactContextInitAsyncTask.doInBackground(ReactInstanceManagerImpl.java:169)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
This link does mention obfuscation isn't supported in React-Native:
https://github.com/facebook/react-native/issues/7530
I want to obfuscate existing app code.