Develop Reference

Cannot Find the Reported APM Logs on the Huawei Devices

When the Huawei APM SDK is integrated, there was no app performance data on the App performance management page. I wanted to locate the problem based on the Logcat logs on the device.
However, I'm not sure where these logs are kept or if I have to enable them in some way?

I checked the APM documentation and found out how to access the logs:
Open the AndroidManifest.xml file of the app, and add the meta-data element to the application.
<application>
<meta-data
android:name="apms_debug_log_enabled"
android:value=" true" />
</application>
After the APM debug log function is enabled, you can use the Logcat log filter function com.huawei.agc.apms or apms to view the logs.

After setting up admob my app crashes without error

I set up admob using npm i --save react-native-admob#next and after that implemented of course in my XML file for android the right app-ID which was given to me by admob. I did it just like that:
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-****************~*********"/>
Also I implemented into the app gradle file following line:
implementation 'com.google.android.gms:play-services-ads:20.2.0'
The last step I did was going into the nodemodules/react-native-admob/build.gradle and changing one line into this:
implementation 'com.google.android.gms:play-services-ads:19.8.0', before that the build was crashing.
My application now builds and doesnt give me ANY error message, however it closes directly after popping up and Im unable to do anything.
No error logs and nothing else beside that. Tried out several solutions which worked for people here, unluckily it didnt work for me.

same issue i faced with this plugin react-native-admob#next.
try this one https://github.com/react-native-admob/admob

CrashlyticsInitProvider skipping initialization OR Settings request failed

I have a project which had crashlytics, fabric or whatever somewhere in the past. Now, when I'm trying to set it up once again and add this to manifest:
<meta-data
android:name="io.fabric.ApiKey"
android:value="my_key_which_came_from_previous_developer"
/>
I get the "CrashlyticsInitProvider skipping initialization" without any detailed description.
But if I remove the code above and add
<meta-data
android:name="my_key_which_came_from_previous_developer"
tools:node="remove"
/>
I get it somehow initialized BUT have the new problem -
I/System.out: [CDS][DNS]Unable to resolve host
"settings.crashlytics.com": No address associated with hostname
E/Fabric: Settings request failed.
So it either receives the settings or initializes the crashlytics. What do I do? Is there a way to completely remove and reinstall crashlytics for my application?

The problem was in proguard turned on and not properly configured to work with crashlytics. If the minifyEnabled option was set to "true" it wouldn't receive setting on the initial run. Nevertheless, it worked fine sending results if installed with proguard enabled.

App crashes when downloaded from Google Play

I've just built and deployed an app to Google Play. It worked well when I was running it through Android Studio but now it crashes when I download it from Google Play. Because this is my first time, I don't even know how to view the crash report/stacktrace of the app that was downloaded from Google Play. I appreciate any and all help.
UPDATE
So I got the stacktrace for the APK. It tells me that my TopImageFragment.java class cannot create my MemeViewModel.java class. I have no clue why its giving this error. Everything works fine as it is. It seems that proguard is indeed phasing out an important class:
2019-04-18 00:46:32.062 8099-8099/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ozbek.onur.memegenerator, PID: 8099
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ozbek.onur.memegenerator/com.ozbek.onur.memegenerator.MainActivity}: java.lang.RuntimeException: Cannot create an instance of class com.ozbek.onur.memegenerator.MemeViewModel
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2853)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2928)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1609)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6703)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:769)
Caused by: java.lang.RuntimeException: Cannot create an instance of class com.ozbek.onur.memegenerator.MemeViewModel
at android.arch.lifecycle.ViewModelProvider$NewInstanceFactory.create(ViewModelProvider.java:155)
at android.arch.lifecycle.ViewModelProvider$AndroidViewModelFactory.create(ViewModelProvider.java:210)
at android.arch.lifecycle.ViewModelProvider.get(ViewModelProvider.java:134)
at android.arch.lifecycle.ViewModelProvider.get(ViewModelProvider.java:102)
at com.ozbek.onur.memegenerator.TopImageFragment.onActivityCreated(TopImageFragment.java:89)

This kind of problem usually happens because your app deployed to Google Play was a release build and proguard minified your app and removed a class it shouldn't have. When you build in Android Studio it is a debug build that does not get minified. That's why you see the crash only from Google Play.
Before uploading to Google Play, test out your release APK file on a device and watch logcat for the error. That should tell you what class got removed by mistake and you can correct that by specifying custom proguard rules and trying again until the app stops crashing. Then when you upload to Google Play, you should be good.
You can also enable proguard in a debug build as well by changing your build.gradle file. Then when you run through Android Studio, you should see the same error as you see through Google Play.
One other alternative, you can disable proguard/minification in your release build. However this is not recommended because your app will be larger than it needs to be.

Check if you have any java files that don't have an access modifier. In my experience, just declaring a class without a public or private modifier, causes this problem.

My app suffered the same problem and it was a ProGuard kill.
Because ProGuard renames all classes unless otherwise instructed.
So, in your case, you have to add
#Keep
annotation before your class name MemeViewModel.
example,
#Keep
class MemeViewModel{
//
//
}

In my suggestion, keep your phone connected to your your PC/Laptop while you download and attempt to open it. Use Logcat on android studio, it mostly has all answers or at least errors that lead to the answers. try putting error logs here so we can have a proper look at it.
1) Try the same version of your application that you deployed on Google play store by pushing it through the android studio and see if the problem continues!
2) If same thing happens then put breakpoint on the entry point (onCreate method in most cases in MainActivity class) of your application and Go to Run->Debug "YourProject" option and do step by step debug for each command being executed and see which one is causing problem.

Android Play Store Error -505

When uploading an APK to the Android Developer Console, everything goes normal, but there are a certain subset of users on android 5.0 and up that are unable to install or upgrade the APK. These users see a Google Play Store error 505.

There are several different resources that tell you that the 505 error is a conflict of permission. Starting in Android Lollipop, you are no longer able to have duplicate custom permissions with the same name https://developer.android.com/about/versions/android-5.0-changes.html#custom_permissions. If you check stackoverflow for this error you'll find multiple reports of people offering this as a solution. While this can sometimes be the cause of this error there are several other reasons that this, and other conflicts can happen.
1. More than one app defines the same permission
If two completely different apps define the same permission e.g if you have a user and a manager app, and both of them have something along the lines of:
<permission
android:name="same.package.name.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
2. Same app signed by different keys
You have the same app, but signed by different keys. For example if you had a release version and a debug version, you'll hit a conflict because the system sees this as two different apps requesting the same permission.
3. Conflicting authorities
But there is an entirely different situation that can occur, which is less obvious. The 505 error can also occur with conflicting authorities. If two different apps declare the same provider, such as
<provider
android:name=".provider.YourProvider"
android:authorities="com.roqbot.client.YourProvider"
android:exported="false" />
This can also provide a conflict.
The last, and hardest conflict to spot, is one that can happen with Google Play Services 8.1 and up. If you do not define an application id in your build.gradle file like this:
defaultConfig {
applicationId "com.example.my.app"
}
it is possible that it will auto-generate a provider that can conflict with other apps. To check this, go into your your build>intermediates>manifests>full>release>AndroidManifest.xml and look for
<provider
android:name="com.google.android.gms.measurement.AppMeasurementContentProvider"
android:authorities="com.google.android.gms.google_measurement_service"
android:exported="false" />
Here the authority name will conflict with other apps. If you add the applicationId to the default config, it will change this authority to
<provider
android:name="com.google.android.gms.measurement.AppMeasurementContentProvider"
android:authorities="com.example.my.app.google_measurement_service"
android:exported="false" />
This is very subtle and appears to be a bug starting in google play services 8.1. The issue can be seen discussed here. https://code.google.com/p/android/issues/detail?id=189079&can=1&q=error%20505&sort=-opened&colspec=ID%20Status%20Priority%20Owner%20Summary%20Stars%20Reporter%20Opened
The point to remember is that it may be several things, and the only thing you can verify for sure with a 505 error is that there is a conflict of some sort, and that it may or may not necessarily be a custom permission conflict.

If you are using the Facebook SDK and following the official sample code, you might also encounter the issue. In my case, I was using a same content provider name on 2 different app's manifest.
<provider
android:authorities="com.facebook.app.FacebookContentProvider123"
android:name="com.facebook.FacebookContentProvider"
android:exported="true" />
I forgot to change the default name com.facebook.app.FacebookContentProvider123. Finally fixed it by adding a dynamic applicationId as provider name.
<provider
android:authorities="com.facebook.app.FacebookContentProvider.${applicationId}"
android:name="com.facebook.FacebookContentProvider"
android:exported="true" />

Name Of The Error: Error 505
Problem: This is an unusual error code which is encountered during the updation or installation of the application from Google Play store. It shows up an error message stating “Unknown error code during Application installs 505”.
Following reasons are responsible for this error.
• It is mostly seen when you try to install an outdated version of the app.
• Error 505 can be caused due to the incompatibility of the app with your Android OS version.
• It can also arise due to cache conflict or data crash of the app.
• Error 505 may also arise due to Google Account Sync Problem.
Solution:
• At first restart your Android device, because this step usually works in getting rid off of any type of error. If it didn’t work and then try these simple steps.
• Clear Cache and Data of Google Play Store, Google Service Framework and Download Manager. To do this First of all go to Settings >> then Apps >> select All >> then Google Play Store and Clear cache and Clear data. Also Clear cache and Clear data for Google Services.