NullPointerException ProgressArcView.stop() on LoginFailed

[ramack]

Describe the bug and how to reproduce ACRA crash report by mail

APP_VERSION_CODE=100
APP_VERSION_NAME=1.0.0
ANDROID_VERSION=6.0.1
CUSTOM_DATA=
STACK_TRACE=java.lang.RuntimeException: Unable to start activity ComponentInfo{org.piwigo.android/org.piwigo.ui.login.LoginActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.github.jorgecastilloprz.progressarc.ProgressArcView.stop()' on a null object reference
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
	at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4077)
	at android.app.ActivityThread.-wrap15(ActivityThread.java)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1350)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:148)
	at android.app.ActivityThread.main(ActivityThread.java:5417)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.github.jorgecastilloprz.progressarc.ProgressArcView.stop()' on a null object reference
	at com.github.jorgecastilloprz.FABProgressCircle.hide(FABProgressCircle.java:166)
	at org.piwigo.ui.login.LoginActivity.loginError(LoginActivity.java:145)
	at org.piwigo.ui.login.LoginActivity.lambda$cvhGC3Mv9TzM8IjVDnu38ao367Q(LoginActivity.java)
	at org.piwigo.ui.login.-$$Lambda$LoginActivity$cvhGC3Mv9TzM8IjVDnu38ao367Q.onChanged(lambda)
	at androidx.lifecycle.LiveData.considerNotify(LiveData.java:131)
	at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:144)
	at androidx.lifecycle.LiveData$ObserverWrapper.activeStateChanged(LiveData.java:442)
	at androidx.lifecycle.LiveData$LifecycleBoundObserver.onStateChanged(LiveData.java:394)
	at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:361)
	at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:300)
	at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:339)
	at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:145)
	at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:131)
	at androidx.lifecycle.ReportFragment.dispatch(ReportFragment.java:123)
	at androidx.lifecycle.ReportFragment.onStart(ReportFragment.java:83)
	at android.app.Fragment.performStart(Fragment.java:2244)
	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1002)
	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1130)
	at android.app.FragmentManagerImpl.dispatchStart(FragmentManager.java:1958)
	at android.app.FragmentController.dispatchStart(FragmentController.java:163)
	at android.app.Activity.performStart(Activity.java:6274)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
	... 10 more

[francois-ger]

This issue occured once on my Nexus tablet, when I did several unsuccessful login. I was not able to reproduce it.

[Valou447]

Looks like this issue needs to be reopened as well..

APP_VERSION_CODE=102
APP_VERSION_NAME=1.0.2
USER_COMMENT=did not start 
SHARED_PREFERENCES=default.acra.legacyAlreadyConvertedTo4.8.0=true
	default.acra.legacyAlreadyConvertedToJson=true
	[email protected]/piwigo
	default.acra.lastVersionNr=102
ANDROID_VERSION=9
CUSTOM_DATA=
STACK_TRACE=java.lang.NullPointerException: Attempt to invoke virtual method 'void com.github.jorgecastilloprz.progressarc.ProgressArcView.stop()' on a null object reference
	at com.github.jorgecastilloprz.FABProgressCircle.hide(FABProgressCircle.java:166)
	at org.piwigo.ui.login.LoginActivity.loginError(LoginActivity.java:146)
	at org.piwigo.ui.login.LoginActivity.lambda$cvhGC3Mv9TzM8IjVDnu38ao367Q(Unknown Source:0)
	at org.piwigo.ui.login.-$$Lambda$LoginActivity$cvhGC3Mv9TzM8IjVDnu38ao367Q.onChanged(Unknown Source:4)
	at androidx.lifecycle.LiveData.considerNotify(LiveData.java:131)
	at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:144)
	at androidx.lifecycle.LiveData$ObserverWrapper.activeStateChanged(LiveData.java:442)
	at androidx.lifecycle.LiveData$LifecycleBoundObserver.onStateChanged(LiveData.java:394)
	at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:361)
	at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:300)
	at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:339)
	at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:145)
	at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:131)
	at androidx.lifecycle.ReportFragment.dispatch(ReportFragment.java:123)
	at androidx.lifecycle.ReportFragment.onStart(ReportFragment.java:83)
	at android.app.Fragment.performStart(Fragment.java:2548)
	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1334)
	at android.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1576)
	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1637)
	at android.app.FragmentManagerImpl.dispatchMoveToState(FragmentManager.java:3050)
	at android.app.FragmentManagerImpl.dispatchStart(FragmentManager.java:3007)
	at android.app.FragmentController.dispatchStart(FragmentController.java:194)
	at android.app.Activity.performStart(Activity.java:7355)
	at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3116)
	at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:180)
	at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:165)
	at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:142)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:214)
	at android.app.ActivityThread.main(ActivityThread.java:6986)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)

[ramack]

looks like a problem in the use lib: https://github.com/JorgeCastilloPrz/FABProgressCircle/issues/24