Develop Reference

Android Oreo's downloadable fonts exceptions

Just uploaded a new version of my app to beta with the new Downloadable Fonts and Fonts in XML features and the pre-launch report from google is showing me crashes on some devices.
LG G6, Android 7.0:
FATAL EXCEPTION: ControllerMessenger
Process: com.example.mobile, PID: 11263
java.lang.NullPointerException: Attempt to invoke a virtual method on a null object reference
at android.support.v4.graphics.TypefaceCompatUtil.mmap(TypefaceCompatUtil.java:98)
at android.support.v4.graphics.TypefaceCompatApi24Impl.createFromFontInfo(TypefaceCompatApi24Impl.java:140)
at android.support.v4.graphics.TypefaceCompat.createFromFontInfo(TypefaceCompat.java:167)
at android.support.v4.provider.FontsContractCompat.getFontInternal(FontsContractCompat.java:190)
at android.support.v4.provider.FontsContractCompat.getFontSync(FontsContractCompat.java:244)
at android.support.v4.graphics.TypefaceCompat.createFromResourcesFamilyXml(TypefaceCompat.java:124)
at android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.java:390)
at android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.java:336)
at android.support.v4.content.res.ResourcesCompat.getFont(ResourcesCompat.java:205)
at com.example.libs.fragments.BaseFragment.onStart(BaseFragment.java:148)
at android.support.v4.app.Fragment.performStart(Fragment.java:2287)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1458)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1750)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1819)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2590)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2377)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2332)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2239)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:700)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.support.test.espresso.base.Interrogator.loopAndInterrogate(Interrogator.java:148)
at android.support.test.espresso.base.UiControllerImpl.loopUntil(UiControllerImpl.java:466)
at android.support.test.espresso.base.UiControllerImpl.loopUntil(UiControllerImpl.java:420)
at android.support.test.espresso.base.UiControllerImpl.injectMotionEvent(UiControllerImpl.java:234)
at android.support.test.espresso.action.MotionEvents.sendUp(MotionEvents.java:140)
at android.support.test.espresso.action.MotionEvents.sendUp(MotionEvents.java:123)
at android.support.test.espresso.action.Tap.sendSingleTap(Tap.java:170)
at android.support.test.espresso.action.Tap.access$100(Tap.java:31)
at android.support.test.espresso.action.Tap$1.sendTap(Tap.java:46)
at android.support.test.espresso.action.GeneralClickAction.perform(GeneralClickAction.java:136)
at android.support.test.espresso.ViewInteraction$SingleExecutionViewAction.perform(ViewInteraction.java:355)
at android.support.test.espresso.ViewInteraction.doPerform(ViewInteraction.java:242)
at android.support.test.espresso.ViewInteraction.access$100(ViewInteraction.java:62)
at android.support.test.espresso.ViewInteraction$1.call(ViewInteraction.java:149)
at android.support.test.espresso.ViewInteraction$1.call(ViewInteraction.java:146)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6316)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
Moto G4 Play, Android 6.0:
FATAL EXCEPTION: main
Process: com.example.mobile, PID: 13208
java.lang.NullPointerException: Attempt to read from field 'int android.support.v4.provider.FontsContractCompat$TypefaceResult.mResult' on a null object reference
at android.support.v4.provider.FontsContractCompat$2.onReply(FontsContractCompat.java:277)
at android.support.v4.provider.FontsContractCompat$2.onReply(FontsContractCompat.java:274)
at android.support.v4.provider.FontsContractCompat$3.onReply(FontsContractCompat.java:312)
at android.support.v4.provider.FontsContractCompat$3.onReply(FontsContractCompat.java:300)
at android.support.v4.provider.SelfDestructiveThread$2$1.run(SelfDestructiveThread.java:149)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5459)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
P8 Lite, Android 5.0:
FATAL EXCEPTION: main
Process: com.example.mobile, PID: 19646
android.view.InflateException: Binary XML file line #145: Error inflating class
at android.view.LayoutInflater.createView(LayoutInflater.java:652)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:762)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:825)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:828)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:828)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:828)
at android.view.LayoutInflater.inflate(LayoutInflater.java:523)
at android.view.LayoutInflater.inflate(LayoutInflater.java:425)
at com.example.libs.fragments.BasicBaseFragment.initView(BasicBaseFragment.java:46)
at com.example.libs.fragments.BasicBaseFragment.onCreateView(BasicBaseFragment.java:73)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2261)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1419)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1750)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1819)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:797)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2590)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2377)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2332)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2239)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:700)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5538)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:626)
... 27 more
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.os.ParcelFileDescriptor.getFd()' on a null object reference
at android.support.v4.graphics.TypefaceCompatApi21Impl.getFile(TypefaceCompatApi21Impl.java:50)
at android.support.v4.graphics.TypefaceCompatApi21Impl.createFromFontInfo(TypefaceCompatApi21Impl.java:72)
at android.support.v4.graphics.TypefaceCompat.createFromFontInfo(TypefaceCompat.java:167)
at android.support.v4.provider.FontsContractCompat.getFontInternal(FontsContractCompat.java:190)
at android.support.v4.provider.FontsContractCompat.getFontSync(FontsContractCompat.java:244)
at android.support.v4.graphics.TypefaceCompat.createFromResourcesFamilyXml(TypefaceCompat.java:124)
at android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.java:390)
at android.support.v4.content.res.ResourcesCompat.loadFont(ResourcesCompat.java:336)
at android.support.v4.content.res.ResourcesCompat.getFont(ResourcesCompat.java:205)
at com.example.libs.widget.view.MandatoryEditTextView.initialize(MandatoryEditTextView.java:179)
at com.example.libs.widget.view.MandatoryEditTextView.init(MandatoryEditTextView.java:120)
at com.example.libs.widget.view.MandatoryEditTextView.(MandatoryEditTextView.java:98)
... 30 more
I noticed in the report videos that those crashes are occurring in the first screens of the app but when i run the app myself on an emulator or a real device (Oreo or pre Oreo) this crashes dont happen.
Also, as a side note, but i think its related, i've been trying to use
<meta-data android:name="preloaded_fonts"
android:resource="#array/preloaded_fonts" />
in AndroidManifest.xml but it doesnt seem to work at all. when trying to access a font, either via xml or by code, the app crashes because the font isnt being recognized. So i decided eventually to remove this meta-data.
Help is appreciated.

Google Cast crash on stop casting

My custom sender application is crashing whenever I'm clicking 'STOP CASTING' on the cast-options menu in the app. The error I'm getting is:
java.lang.NullPointerException: Attempt to write to field 'java.lang.ref.WeakReference android.support.v4.media.session.MediaSessionCompat$Callback.mSessionImpl' on a null object reference
at android.support.v4.media.session.MediaSessionCompat$MediaSessionImplApi21.setCallback(MediaSessionCompat.java:2305)
at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:267)
at android.support.v4.media.session.MediaSessionCompat.setCallback(MediaSessionCompat.java:255)
at com.google.android.gms.internal.zznv.zzen(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.zzei(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.zza(Unknown Source)
at com.google.android.gms.cast.framework.CastSession$zzb.zzei(Unknown Source)
at com.google.android.gms.cast.framework.zzf$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:387)
at zv.a(:com.google.android.gms.DynamiteModulesC:199)
at zl.a(:com.google.android.gms.DynamiteModulesC:128)
at aaa.onTransact(:com.google.android.gms.DynamiteModulesC:122)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.cast.framework.zzh$zza$zza.zzb(Unknown Source)
at com.google.android.gms.cast.framework.CastSession.end(Unknown Source)
at com.google.android.gms.cast.framework.Session$zza.end(Unknown Source)
at com.google.android.gms.cast.framework.zzq$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:387)
at abc.a(:com.google.android.gms.DynamiteModulesC:216)
at abk.a(:com.google.android.gms.DynamiteModulesC:303)
at acg.a(:com.google.android.gms.DynamiteModulesC:70)
at acg.e(:com.google.android.gms.DynamiteModulesC:38)
at acd.onTransact(:com.google.android.gms.DynamiteModulesC:126)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.internal.zznn$zza$zza.zzg(Unknown Source)
at com.google.android.gms.internal.zznq.onRouteUnselected(Unknown Source)
at android.support.v7.media.MediaRouter$Callback.onRouteUnselected(MediaRouter.java:1787)
at android.support.v7.media.MediaRouter$GlobalMediaRouter$CallbackHandler.invokeCallback(MediaRouter.java:2999)
at android.support.v7.media.MediaRouter$GlobalMediaRouter$CallbackHandler.handleMessage(MediaRouter.java:2946)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
and I can't seem to find anyone with this error. I've followed https://github.com/googlecast/CastHelloText-android/ to the point. I will post the full activity here if it's wanted.

I've found answer on google issue tracking system on https://issuetracker.google.com/issues/37129745
In short, update v7 supprt library to 25.1.1

ProGuard causing Jackson error, "Conflicting property name definitions"

I am using the Nest Android SDK and am getting close to releasing my application. I have found that it is not possible to use Proguard with the Nest SDK as it stands today. Once a user is authenticated, the data that comes back causes the crash below.
How can I get passed this, and still keep ProGuard enabled? I created an issue on the github page but I assume it will not be a high priority by Nest.
09-06 23:49:32.807 15229-15229/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: <my_package>, PID: 15229
java.lang.IllegalStateException: Conflicting property name definitions: 'locale' (for [field com.nestlabs.sdk.Device#b]) vs 'name' (for [method com.nestlabs.sdk.Device#b(0 params)])
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.findRenamed(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertyBuilder.findNewName(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector._renameProperties(Unknown Source)
at com.fasterxml.jackson.databind.introspect.POJOPropertiesCollector.collect(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.collectProperties(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.forDeserialization(Unknown Source)
at com.fasterxml.jackson.databind.introspect.BasicClassIntrospector.forDeserialization(Unknown Source)
at com.fasterxml.jackson.databind.DeserializationConfig.introspect(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(Unknown Source)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(Unknown Source)
at com.firebase.client.d.a(Unknown Source)
at com.nestlabs.sdk.aa.a(Unknown Source)
at com.firebase.client.c.ba.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
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)

android.content.res.Resources.getConfiguration()' on a null object reference

I have a Service that acts like an overlay with a chathead (like facebook messenger) when the user tap on this chatHead I pop a MapView (v2)
It works for the majority of my users, but in the bug report all the Xiaomi Xiaomi Redmi Note 3 users have the same crash
java.lang.RuntimeException: Unable to create service
com.package.MyService: java.lang.NullPointerException: Attempt to
invoke virtual method 'android.content.res.Configuration
android.content.res.Resources.getConfiguration()' on a null object
reference at
android.app.ActivityThread.handleCreateService(ActivityThread.java) at
android.app.ActivityThread.access$1800(ActivityThread.java) at
android.app.ActivityThread$H.handleMessage(ActivityThread.java) at
android.os.Handler.dispatchMessage(Handler.java) at
android.os.Looper.loop(Looper.java) at
android.app.ActivityThread.main(ActivityThread.java) at
java.lang.reflect.Method.invoke(Native Method) at
java.lang.reflect.Method.invoke(Method.java:372) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java) Caused by:
java.lang.NullPointerException: Attempt to invoke virtual method
'android.content.res.Configuration
android.content.res.Resources.getConfiguration()' on a null object
reference at android.view.SurfaceView.init(SurfaceView.java) at
android.view.SurfaceView.(SurfaceView.java) at
maps.V.x.(Unknown Source) at maps.V.v.(Unknown Source) at
maps.D.v.(Unknown Source) at maps.D.v.a(Unknown Source) at
maps.ad.ae.a(Unknown Source) at maps.ad.u.a(Unknown Source) at
maps.ad.R.a(Unknown Source) at
wc.onTransact(:com.google.android.gms.DynamiteModulesB:66) at
android.os.Binder.transact(Binder.java) at
com.google.android.gms.maps.a.e$a$a.a(Unknown Source) at
com.google.android.gms.maps.MapView$a.a(Unknown Source) at
com.google.android.gms.dynamic.e.a(Unknown Source) at
com.google.android.gms.dynamic.c.a(Unknown Source) at
com.google.android.gms.maps.MapView$b.g(Unknown Source) at
com.google.android.gms.maps.MapView$b.a(Unknown Source) at
com.google.android.gms.dynamic.b.a(Unknown Source) at
com.google.android.gms.dynamic.b.a(Unknown Source) at
com.google.android.gms.maps.MapView.a(Unknown Source)
The code that seems to fail is here
this.setTheme(R.style.AppTheme);
this.myView = LayoutInflater.from(this).inflate(R.layout.my_map, null);
this.mapView = (MapView) myView.findViewById(R.id.map);
this.mapView.onCreate(null);
this.mapView.getMapAsync(this);
The line that throws this error is
this.mapView.getMapAsync(this);
Anyone have a solution for this?

Try turning Hardware acceleration on in manifest
android:hardwareAccelerated="true"
it worked for me
source: https://code.google.com/p/gmaps-api-issues/issues/detail?id=9071

Android Marshmallow Keystore SecurityException

I'm trying to implement functionality similar to Android Keystore Direct access. The code is making use of IPC and an exception is thrown when mRemote.transact was called (IKeystoreService.java line 54)
This works well on versions of Android before Marshmallow (API 23). I know the permissions model has changed since.
The exception is:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.activity.MainActivity}: java.lang.SecurityException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.SecurityException
at android.os.BinderProxy.transactNative(Native Method)
at android.os.BinderProxy.transact(Binder.java:503)
at com.example.utilities.security.IKeystoreService$Stub$Proxy.test(IKeystoreService.java:55)
at com.example.utilities.security.KeyStoreKk.state(KeyStoreKk.java:93)
at com.example.utilities.security. Cryto.isPasswordPinEnabled(Cryto.java:198)
at com.example.activity.MainActivity.onCreate(MainActivity.java:65)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Is there a particular permission I need to check for during runtime? Or is this another problem altogether?