Develop Reference

Android Emulator SDK--30 is not working with AR application [Google sceneform sdk]

We are developing an AR application with google-sceneform sdk, the app is getting crashed on Android 11 (Real Device) after the successful launch. we are able to identify the plane and place an object but after some time it will crash.
So we are trying it on emulator sdk-30. But after running the application it shows Failed to create AR Session.
I have followed the whole steps provided by Google in this Link but it didn't work.
Tried all the steps with android studio 4.1 and SDK-30 with emulator version 30.2.6 which is not worked.
The normal hand sign for scanning the surface is also not shown.
But with SDK-27 it worked. We need the sdk-30 to be worked.
Q1: is the emulator failing issue is a known issue? did anyone faced this before?
This is the log for Emulator.
2020-12-28 16:38:58.742 7153-7153/com.quintar.myapplication E/StandardArFragment: Error: Failed to create AR session
com.google.ar.core.exceptions.UnavailableException
at com.google.ar.sceneform.ux.BaseArFragment.initializeSession(BaseArFragment.java:391)
at com.google.ar.sceneform.ux.BaseArFragment.onResume(BaseArFragment.java:338)
#### SKIPPING SOME LINES HERE ####
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Caused by: com.google.ar.core.exceptions.FatalException: Failed to launch installer.
at com.google.ar.core.p.b(InstallService.java:53)
at com.google.ar.core.p.a(InstallService.java:40)
at com.google.ar.core.InstallActivity.startInstaller(InstallActivity.java:116)
at com.google.ar.core.InstallActivity.access$200(InstallActivity.java:125)
at com.google.ar.core.k.onClick(InstallActivity.java:3)
#### SKIPPING SOME LINES HERE ####
at android.app.ActivityThread.main(ActivityThread.java:7656) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947) 
Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=market://details?id=com.google.ar.core }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2067)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1727)
Q2: it is very much appreciatable if anyone can help me to fix the on Android 11 crash issue.
this is crash log on Android 11 (Real device)
2020-12-21 14:19:01.868 14629-14629/? A/DEBUG: Abort message: 'Scudo ERROR: invalid chunk state when
deallocating address 0x0073944b2ea0
'
2020-12-21 14:19:02.415 14629-14629/? A/DEBUG: #03 pc 00000000000431bc
/apex/com.android.runtime/lib64/bionic/libc.so
(scudo::reportInvalidChunkState(scudo::AllocatorAction, void*)+76) (BuildId:
95f68a34fdf7b31f42d3f811d5d88f58)
2020-12-21 14:19:03.665 1091-6178/? E/AudioSystem: invalid attributes { Content type:
AUDIO_CONTENT_TYPE_UNKNOWN Usage: AUDIO_USAGE_UNKNOWN Source: -1 Flags: 0x800 Tags: } when
converting to stream
2020-12-21 14:19:06.839 895-1615/? E/soundtrigger: audio_extn_sound_trigger_update_stream_status:
invalid input device 0x0, for event 2

In file 'YourProject/app/build.gradle' set the next dependecies for Android Target API 30 with the last of AR Sceneform Library:
android {
defaultConfig {
...
targetSdkVersion 30
...
}
}
dependencies {
...
api "com.google.ar.sceneform:core:1.17.1"
api "com.google.ar.sceneform.ux:sceneform-ux:1.17.1"
api "com.google.ar:core:1.22.0"
...
}

app crashes on production but not in development - android app

My Project structure:
1- Kotlin app lib.
2-Java app calling methods from Kotlin lib.
From Java app I'm calling some methods from Kotlin lib. in development all works good and methods called successfully. after generating apk app starts with splash screen then crashes after getting location,
specifically when calling methods from Kotlin lib.
I think I missed something when generating apk with App and lib.
I tried this example and another about proguardFiles but no new result:
https://www.petrikainulainen.net/programming/gradle/getting-started-with-gradle-creating-a-multi-project-build/
the error:
2020-05-28 13:22:29.970 339-339/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.app.app, PID: 339
java.lang.NoSuchMethodError: No static method asAttributeSet(Lh/a/a/a;)Landroid/util/AttributeSet; in class Landroid/util/Xml; or its super classes (declaration of 'android.util.Xml' appears in /system/framework/framework.jar:classes2.dex)
at c.a.n.g.inflate()
at ui.activity.MainActivity.onCreateOptionsMenu()
at android.app.Activity.onCreatePanelMenu(Activity.java:3183)
at androidx.fragment.app.d.onCreatePanelMenu()
at c.a.n.i.onCreatePanelMenu()
at androidx.appcompat.app.f$j.onCreatePanelMenu()
at c.a.n.i.onCreatePanelMenu()
at androidx.appcompat.app.i.o()
at androidx.appcompat.app.i$a.run()
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:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

Problem starting DJI simulation [dji-sdk]

I'm trying to implement the sample code of dji developer for android but i can't start the app, i add my com.dji.sdk.API_KEY and when i launch the app i get this errors:
2020-04-03 19:44:10.734 5567-5607/com.dji.sdk.sample E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: com.dji.sdk.sample, PID: 5567
java.lang.UnsatisfiedLinkError: No implementation found for java.lang.String dji.midware.natives.SDKRelativeJNI.native_getUsbAccessoryAttachedString() (tried Java_dji_midware_natives_SDKRelativeJNI_native_1getUsbAccessoryAttachedString and Java_dji_midware_natives_SDKRelativeJNI_native_1getUsbAccessoryAttachedString__)
at dji.midware.natives.SDKRelativeJNI.native_getUsbAccessoryAttachedString(Native Method)
at dji.sdk.sdkmanager.DJISDKManager.<clinit>(Unknown Source:32)
at dji.sdk.sdkmanager.DJISDKManager.getInstance(Unknown Source:0)
at com.dji.sdk.sample.internal.controller.MainActivity$5.run(:241)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
If you need code of any thing i can post it too. Thanks.
EDIT:
I can do it with an hardware Samsung, not in virtual device.

I'm using an emulator, but the MSDK doesn't support it.
It only works with a real device.

Facebook Account Kit Collision with Google play services gradle

After configuring account kit sdk as
compile 'com.facebook.android:account-kit-sdk:4.+'
and gradle sync it conflict with com.google.android.gms gradle as mixing versions can lead to runtime crashes and my app crash as
Firebase API initialization failure.
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at com.google.firebase.FirebaseApp.zza(Unknown Source)
at ...
the above error is due to mixing google play services gradle (I think Google play services gradle may be used by Facebook Account Kit SDK) because I have same version for all Google play services gradles.
And one more crash is coming from Facebook Account Kit SDK side as
java.lang.RuntimeException: Unable to get provider com.facebook.accountkit.internal.AccountKitInitProvider: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.PackageManager android.content.Context.getPackageManager()' on a null object reference
at android.app.ActivityThread.installProvider(ActivityThread.java:5260)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4808)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4748)
at android.app.ActivityThread.access$1700(ActivityThread.java:153)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1436)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:5529)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.PackageManager android.content.Context.getPackageManager()' on a null object reference
at com.facebook.accountkit.internal.Initializer.initialize(Initializer.java:99)
at com.facebook.accountkit.internal.AccountKitController.initialize(AccountKitController.java:592)
at com.facebook.accountkit.internal.AccountKitInitProvider.onCreate(AccountKitInitProvider.java:31)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1758)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1733)
at android.app.ActivityThread.installProvider(ActivityThread.java:5257)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4808) 
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4748) 
at android.app.ActivityThread.access$1700(ActivityThread.java:153) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1436) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:5529) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629) 
But after removing
compile 'com.facebook.android:account-kit-sdk:4.+'
my app working without any issue.
But to integrate Facebook Account Kit in my app I have to include above gradle which conflict with google play services.
Totally disappointed, please help.
After upgrading Firebase Gradle as
compile 'com.google.firebase:firebase-messaging:11.6.0'
its not colliding but still gives above RuntimeException from Account Kit SDK.

To fix this you can do something like the following
compile ('com.facebook.android:account-kit-sdk:4.27.0') {
exclude group: 'com.google.android.gms', module: 'play-services-auth-api-phone'
exclude group: 'com.google.android.gms', module: 'play-services-auth'
}
compile 'com.google.android.gms:play-services-auth:11.6.0'
compile 'com.google.firebase:firebase-messaging:11.6.0'
That would remove the stale support gms library from Facebook's SDK and then swap in the same version of the lib that Firebase is using.

Possibly the conflict of libraries can be the reason. See dependencies here;
https://mvnrepository.com/artifact/com.facebook.android/account-kit-sdk/4.27.0
See if you could submit an issue with the facebook to update it.
Or if you need facebook for authentication only, you can use Facebook Android Sdk

What feature/service from firebase r u using , can u pls share the snippet of ur gradle dependencies for the same to better understand the problem here?

For Unable to get provider RuntimeException exception it seems that, Application is not initialized first, Content Providers are initialized before it.
And in Facebook account kit SDK's code it was trying to get my application context.
Now the problem was, I did implement method getApplicationContext() in application class that is getting application shared variable but that variable was setting globally and Facebook Account Kit sdk code getting Null application context.
Solution : setting shared variable in onCreate method instead of setting globally it resolved the problem of Unable to get provider.
And For Mixing issue, Account Kit SDK use 11.0.1 version for play services gradle and in my project I am having 11.0.4 that is actually not the issue because on compile time gradle takes latest gradle but In my project I am not referring below gradle which Facebook Account Kit SDK is using.
compile 'com.google.android.gms:play-services-auth-api-phone:11.0.1'
Solution : I have added above gradle with version 11.0.4 and the mixing gradle issue has been resolved.
compile 'com.google.android.gms:play-services-auth-api-phone:11.0.4'
And as suggested by #astryk if I exclude play-services-auth-api-phone module then gradle mixing error is not showing but it is not including that module becasue in AccountKitActivity on next button click my application crashes as
Crash Report Thread:main Exception:java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/auth/api/phone/SmsRetriever;
at com.facebook.accountkit.internal.PhoneLoginController.createSmsToken(PhoneLoginController.java:250)
at com.facebook.accountkit.internal.PhoneLoginController.logIn(PhoneLoginController.java:188)
at com.facebook.accountkit.internal.LoginManager.logInWithPhoneNumber(LoginManager.java:372)
at com.facebook.accountkit.internal.AccountKitController.logInWithPhoneNumber(AccountKitController.java:631)
at com.facebook.accountkit.ui.PhoneLoginFlowManager.logInWithPhoneNumber(PhoneLoginFlowManager.java:57)
at com.facebook.accountkit.ui.ActivityPhoneHandler.onPhoneLoginComplete(ActivityPhoneHandler.java:189)
at com.facebook.accountkit.ui.AccountKitActivity$1.onReceive(AccountKitActivity.java:176)
at android.support.v4.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:297)
at android.support.v4.content.LocalBroadcastManager.access$000(LocalBroadcastManager.java:46)
at android.support.v4.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:116)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:5529)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.auth.api.phone.SmsRetriever" on path: DexPathList[[zip file "/data/app/com.myapp-1/base.apk"],nativeLibraryDirectories=[/data/app/com.myappList item -1/lib/arm64, /vendor/lib64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
... 16 more
Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.auth.api.phone.SmsRetriever
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 17 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available`

Make ZBAR scanner compatible with Android 6.0 (API 23)

I am self-taught in Android, using Studio 2.1 and trying to get the app working on API version 23.
I am using ZBAR barcode scanner, to scan the barcodes of books and then do a lookup of the ISBN code.
This all works nicely in lower API versions. When I get to 23 there is a documented change to how Android works with a particular component.
And here is the rub - I don't understand what I need to do to fix it.
FATAL EXCEPTION: main
Process: arw.apps.barcode, PID: 24533
java.lang.UnsatisfiedLinkError: dlopen failed: /data/app/arw.apps.barcode-1/lib/arm/libiconv.so: has text relocations
at java.lang.Runtime.loadLibrary(Runtime.java:372)
at java.lang.System.loadLibrary(System.java:1076)
at arw.apps.barcode.ZBarScannerActivity.<clinit>(ZBarScannerActivity.java:29)
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2351)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2520)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5466)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
The app compiles right, and this happens when I try to activate the camera to perform the barcode scan.
I see the DLOpen Fail error, referring to text relocations. I have read up that Android has been warning about this for a while, and in 6.0 its has not stopped working.
For good measure, I can confirm this code is present:
static {
System.loadLibrary("iconv");
}
And this is in my .build file
dependencies {
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile 'com.android.support:recyclerview-v7:23.2.1'
compile files ('libs/zbar.jar')
compile files('libs/org.apache.http.legacy.jar')
What other artifacts can I post here to help you help me :-)
Grateful in advance for asistance
Alex