Crashlytics - Android Setup

Additional Android steps for Crashlytics integration

If you're migrating from Fabric, make sure you remove the fabric.properties file from your Android project. If you do not do this you will not receive crash reports on the Firebase console.

Adding Firebase Crashlytics Gradle Tools

These steps are required, if you do not add these your app will most likely crash at startup with the following Error:

"The Crashlytics build ID is missing. This occurs when Crashlytics tooling is absent from your app's build configuration. Please review Crashlytics onboarding instructions and ensure you have a valid Crashlytics account."_

1. Add the Google repository (if it's not there already)

Add the following line to the android/build.gradle file :

// ..
buildscript {
  // ..
  repositories {
    // ..
    google()
  }
  // ..
}

2. Add the Firebase Crashlytics Plugin dependency

Add the following dependency to the android/build.gradle file:

// ..
buildscript {
  // ..
  dependencies {
    // ..
    classpath 'com.google.firebase:firebase-crashlytics-gradle:2.7.1'
  }
  // ..
}

3. Apply the Firebase Crashlytics Plugin to your app

Apply the com.google.firebase.crashlytics plugin by adding the following to the top of your android/app/build.gradle file:

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services' // apply after this line
apply plugin: 'com.google.firebase.crashlytics'
// ..

4. (Optional) Enable Crashlytics NDK reporting

Crashlytics NDK reporting allows you to capture Native Development Kit crashes, e.g. in React Native this will capture crashes originating from the Yoga layout engine.

Add the firebaseCrashlytics block line to the android/app/build.gradle file:

android {
    // ...

    buildTypes {
        release {
            /* Add the firebaseCrashlytics extension (by default,
            * it's disabled to improve build speeds) and set
            * nativeSymbolUploadEnabled to true along with a pointer to native libs. */

            firebaseCrashlytics {
                nativeSymbolUploadEnabled true
                unstrippedNativeLibsDir 'build/intermediates/merged_native_libs/release/out/lib'
            }
            // ...
        }
    }
}

5. Rebuild the project

Once the above steps have been completed, rebuild your Android project:

npx react-native run-android