How do I use Crashlytics for my React Native Android App? - react-native

Question

I am trying to figure out how to use Crashlytics from Fabric for my React Native Android APP. I followed the steps on the Fabric homepage and added some lines in my build.gradle files. But the builds always crash.
Is there a difference using Crashlytics for React Native Android and Crashlytics for Native Android development using Android Studio and Java?

Answer 1

I got it working in some way, but it may not be the perfect solution...
1: Add fabric/crashlytics into your app/build.gradle - File
(I didn´t have the buildscript in my app/build.gradle so i just included it. But i am not sure if this is good....)
buildscript {
repositories {
jcenter()
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
classpath 'com.android.tools.build:gradle:1.5.0'
// The Fabric Gradle plugin uses an open ended version to react
// quickly to Android tooling updates
classpath 'io.fabric.tools:gradle:1.+'
}
}
// Add this directly under: apply plugin: "com.android.application"
apply plugin: 'io.fabric'
// and this directly under: apply from: "react.gradle"
repositories {
jcenter()
maven { url 'https://maven.fabric.io/public' }
}
// Last but not least add Crashlytics Kit into dependencies
compile('com.crashlytics.sdk.android:crashlytics:2.5.5#aar') {
transitive = true
}
2: The most important, because it is nowhere mentioned (or i didn´t find it anywhere), import Crashlytics and Fabric into MainActivity:
import com.crashlytics.android.Crashlytics;
import io.fabric.sdk.android.Fabric;
3: In your onCreate - method add:
// Fabrics
Fabric.with(this, new Crashlytics());
When you´ve done this, you will at least get Crashreports which are caused by native Code (Java Code). Crashes which are caused through JS - Syntax or similar wont be notified. There you will get the known RedBox :P
Good luck!

Answer 2

For the newer versions of React Native you have to import Bundle and place your own onCreate Method like this:
// Added Bundle to use onCreate which is needed for our Fabrics workaround
import android.os.Bundle;
..........
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Fabrics
Fabric.with(this, new Crashlytics());
}
Not sure if this is good or not since they have removed the onCreate but it works for me

Answer 3

Try this : https://fabric.io/kits/android/crashlytics/install
Summarizes all the files you need to edit in your Android installation well.
For the AndroidManifest.xml file, replace the android:value key (e.g. below) with your actual API key. Remember to get your API key from your organization settings... 1. login to https://fabric.io/settings/organizations and 2. click on build secret.
<meta-data
android:name="io.fabric.ApiKey"
android:value="<api key here>"
/>