Develop Reference

Tink GeneralSecurityException: cannot find key template: AES128_GCM Tink

What I tried to run :
KeysetHandle keyHandler = KeysetHandle.generateNew(KeyTemplates.get("AES128_GCM"));
Error I got :
java.security.GeneralSecurityException: cannot find key template: AES128_GCM
at com.google.crypto.tink.KeyTemplates.get(KeyTemplates.java:37)
at com.example.AppName.password_pin.onCreate(password_pin.java:59)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Am I missing something? Did I skip some step accidentally?

The registration is missing, e.g.:
AeadConfig.register();
see also the Tink documentation (current Version v1.6.1).

My app started to crash after implementing Licence Verfication Library

I used this answer in order to setup my Licence Verfication Library. In order to compile my app without errors I needed to add
android
{
useLibrary 'org.apache.http.legacy'
}
in the build.gradle of library. However, when I launch my app it crashes instantly, even if I remove abort(). Using debugger I could reach the line checker.checkAccess(licenseCheckerCallback). Maybe someone else tried it with Kotlin? How can I solve this?
Edit:
I noticed that I'm getting and error as in the step 24 of answer: Service Intent must be explicit: Intent { act=com.android.vending.licensing.ILicensingService }. However I don't know how can I solve it in Kotlin.
My stacktrace in red is:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: dreamy.protest, PID: 1539
java.lang.RuntimeException: Unable to start activity ComponentInfo{dreamy.protest/ dreamy.protest.MainActivity}: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.licensing.ILicensingService }
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2951)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6718)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.licensing.ILicensingService }
at android.app.ContextImpl.validateServiceIntent(ContextImpl.java:1519)
at android.app.ContextImpl.bindServiceCommon(ContextImpl.java:1663)
at android.app.ContextImpl.bindService(ContextImpl.java:1612)
at android.content.ContextWrapper.bindService(ContextWrapper.java:698)
at android.content.ContextWrapper.bindService(ContextWrapper.java:698)
at com.google.android.vending.licensing.LicenseChecker.checkAccess(LicenseChecker.java:150)
at dreamy.protest.MainActivity.doCheck(MainActivity.kt:57)
at dreamy.protest.MainActivity.onCreate(MainActivity.kt:104)
at android.app.Activity.performCreate(Activity.java:7144)
at android.app.Activity.performCreate(Activity.java:7135)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6718)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Emulator keeps crashing when running

Hi i am trying to make an app which shows the location of a place and everytime i run my app on the android emulator and every-time time i run it keeps on crashing and it is displaying this message in the log cat down below. I am running android studio version 3.4.2. I would appreciate it if someone could help me with this problem.
The libary i loaded in was : implementation 'com.mapbox.mapboxsdk:mapbox-android-sdk:8.0.0'
2020-03-27 16:22:33.335 12756-12756/com.example.mappingexample E/SoLoader: couldn't find DSO to load: libmapbox-gl.so caused by: dlopen failed: "/data/data/com.example.mappingexample/lib-main/libmapbox-gl.so" has unexpected e_machine: 40 (EM_ARM)
2020-03-27 16:22:33.340 12756-12756/com.example.mappingexample E/Mbgl-LibraryLoader: Failed to load native shared library.
com.facebook.soloader.SoLoader$WrongAbiError: APK was built for a different platform
at com.facebook.soloader.SoLoader.loadLibraryBySoName(SoLoader.java:645)
at com.facebook.soloader.SoLoader.loadLibrary(SoLoader.java:577)
at com.facebook.soloader.SoLoader.loadLibrary(SoLoader.java:525)
at com.mapbox.mapboxsdk.module.loader.LibraryLoaderProviderImpl$SoLibraryLoader.load(LibraryLoaderProviderImpl.java:42)
at com.mapbox.mapboxsdk.LibraryLoader.load(LibraryLoader.java:43)
at com.mapbox.mapboxsdk.net.NativeConnectivityListener.<clinit>(NativeConnectivityListener.java:13)
at com.mapbox.mapboxsdk.net.ConnectivityReceiver.instance(ConnectivityReceiver.java:43)
at com.mapbox.mapboxsdk.Mapbox.getInstance(Mapbox.java:67)
at com.example.mappingexample.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.UnsatisfiedLinkError: couldn't find DSO to load: libmapbox-gl.so caused by: dlopen failed: "/data/data/com.example.mappingexample/lib-main/libmapbox-gl.so" has unexpected e_machine: 40 (EM_ARM)
at com.facebook.soloader.SoLoader.doLoadLibraryBySoName(SoLoader.java:789)
at com.facebook.soloader.SoLoader.loadLibraryBySoName(SoLoader.java:639)
at com.facebook.soloader.SoLoader.loadLibrary(SoLoader.java:577) 
at com.facebook.soloader.SoLoader.loadLibrary(SoLoader.java:525) 
at com.mapbox.mapboxsdk.module.loader.LibraryLoaderProviderImpl$SoLibraryLoader.load(LibraryLoaderProviderImpl.java:42) 
at com.mapbox.mapboxsdk.LibraryLoader.load(LibraryLoader.java:43) 
at com.mapbox.mapboxsdk.net.NativeConnectivityListener.<clinit>(NativeConnectivityListener.java:13) 
at com.mapbox.mapboxsdk.net.ConnectivityReceiver.instance(ConnectivityReceiver.java:43) 
at com.mapbox.mapboxsdk.Mapbox.getInstance(Mapbox.java:67) 
at com.example.mappingexample.MainActivity.onCreate(MainActivity.java:40) 
at android.app.Activity.performCreate(Activity.java:7136) 
at android.app.Activity.performCreate(Activity.java:7127) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:193) 
at android.app.ActivityThread.main(ActivityThread.java:6669) 
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:858) 
2020-03-27 16:22:33.344 12756-12756/com.example.mappingexample E/.mappingexampl: No implementation found for void com.mapbox.mapboxsdk.net.NativeConnectivityListener.initialize() (tried Java_com_mapbox_mapboxsdk_net_NativeConnectivityListener_initialize and Java_com_mapbox_mapboxsdk_net_NativeConnectivityListener_initialize__)
2020-03-27 16:22:33.344 12756-12756/com.example.mappingexample D/AndroidRuntime: Shutting down VM
2020-03-27 16:22:33.345 12756-12756/com.example.mappingexample E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.mappingexample, PID: 12756
java.lang.UnsatisfiedLinkError: No implementation found for void com.mapbox.mapboxsdk.net.NativeConnectivityListener.initialize() (tried Java_com_mapbox_mapboxsdk_net_NativeConnectivityListener_initialize and Java_com_mapbox_mapboxsdk_net_NativeConnectivityListener_initialize__)
at com.mapbox.mapboxsdk.net.NativeConnectivityListener.initialize(Native Method)
at com.mapbox.mapboxsdk.net.NativeConnectivityListener.<init>(NativeConnectivityListener.java:27)
at com.mapbox.mapboxsdk.net.ConnectivityReceiver.instance(ConnectivityReceiver.java:43)
at com.mapbox.mapboxsdk.Mapbox.getInstance(Mapbox.java:67)
at com.example.mappingexample.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
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:858)
2020-03-27 16:22:33.360 12756-12756/com.example.mappingexample I/Process: Sending signal. PID: 12756 SIG: 9

You can resolve this issue by following these steps:
1. Go to Gradle (Module: App)
2. Add this code on android {}
android {
packagingOptions {
pickFirst '**/armeabi-v7a/libmapbox-gl.so'
pickFirst '**/x86/libmapbox-gl.so'
pickFirst '**/arm64-v8a/libmapbox-gl.so'
pickFirst '**/x86_64/libmapbox-gl.so'
pickFirst '**/x86/libmapbox-gl.so'
}
}

Restricted policy in Googole Apps (Unsupported Font Family )

Unsupported Font Family restricted policy in Android Studio
in my play console of pre-lauch report showing this warning. i don't why this is happening. Some api blacklisted by Android in Pie and Q. so this api is not private it is public then why issue is producing here anyone who have idea what's happend acutly
Thanks in advance!
StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V
at android.os.StrictMode.lambda$static$1(StrictMode.java:428)
at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
at java.lang.Class.getDeclaredMethodInternal(Native Method)
at java.lang.Class.getPublicMethodRecursive(Class.java:2075)
at java.lang.Class.getMethod(Class.java:2063)
at java.lang.Class.getMethod(Class.java:1690)
at androidx.appcompat.widget.a1.b(Unknown Source:19)
at androidx.appcompat.app.h.z(Unknown Source:271)
at androidx.appcompat.app.h.A(Unknown Source:4)
at androidx.appcompat.app.h.c(Unknown Source:0)
at androidx.appcompat.app.e.setContentView(Unknown Source:4)
at sjtechnologies.muslimapp.MainActivity.onCreate(Unknown Source:6)
at android.app.Activity.performCreate(Activity.java:7144)
at android.app.Activity.performCreate(Activity.java:7135)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at androidx.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:184)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6718)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

How to fix "com.firebase.ui.auth.FirebaseUiException: Code: 16, message: 16: "?

I'm trying to authenticate my users using firebase authentication, but this error pops up.
I've already added the SHA1, but it still doesn't work.
E/AuthUI: A sign-in error occurred.
com.firebase.ui.auth.FirebaseUiException: Code: 16, message: 16:
at com.firebase.ui.auth.data.remote.GoogleSignInHandler.onActivityResult(GoogleSignInHandler.java:110)
at com.firebase.ui.auth.ui.idp.SingleSignInActivity.onActivityResult(SingleSignInActivity.java:128)
at android.app.Activity.dispatchActivityResult(Activity.java:7454)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4353)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4402)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)