ProGuard and Native Symbols

LastCrash can deobfuscate with any ProGuard-compatible mapping file and native (NDK) symbols file.

If your app uses ProGuard add the following to the ProGuard file:

-keepattributes SourceFile,LineNumberTable        # Keep file names and line numbers.
-keep public class * extends java.lang.Exception  # Optional: Keep custom exceptions.

Gradle

Ensure pluginManagement includes the LastCrash maven repository.

pluginManagement {
    repositories {
        maven {
            url "https://mvn.lastcrash.io/releases"
        }
        //...
    }
}

Add the io.lastcrash.gradle plugin to your gradle environment and configure the LastCrash plugin with your API Key.

Configure which build variants you would like to deobfuscate and upload ProGuard mappings to LastCrash.

Here are full examples for both Kotlin and Groovy app gradle scripts.

Kotlin: build.gradle.kts

import io.lastrash.gradle.LastCrashExtension

plugins {
    // ...
    id("io.lastcrash.gradle") version "1.0"
}

lastcrash {
    apiKey = "LASTCRASH_API_KEY"
}
// ...

android {
  // To enable LastCrash mapping file upload for specific build types:
  buildTypes {
    release {
      minifyEnabled = true
      configure<LastCrashExtension> {
        uploadSymbols = true
      }
    }
  }

  ...

  // To enable LastCrash mapping file upload for specific product flavors:
  flavorDimensions += "environment"
  productFlavors {
    create("staging") {
      dimension = "environment"
      ...
      configure<LastCrashExtension> {
        uploadSymbols = false
      }
    }
    create("prod") {
      dimension = "environment"
      ...
      configure<LastCrashExtension> {
        uploadSymbols = true
      }
    }
  }
}

Groovy: build.gradle

plugins {
    id("io.lastcrash.gradle") version "1.0"
}

lastcrash {
    apiKey = "LASTCRASH_API_KEY"
}

android {
  // To enable LastCrash mapping file upload for specific build types:
  buildTypes {
    release {
      minifyEnabled true
      lastcrashExtension {
        uploadSymbols true
      }
    }
  }

  ...

  // To enable Crashlytics mapping file upload for specific product flavors:
  flavorDimensions "environment"
  productFlavors {
    staging {
      dimension "environment"
      ...
      lastcrashExtension {
        uploadSymbols false
      }
    }
    prod {
      dimension "environment"
      ...
      lastcrashExtension {
        uploadSymbols true
      }
    }
  }
}