def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } apply plugin: 'com.android.library' android { compileSdkVersion safeExtGet('compileSdkVersion', 28) buildToolsVersion safeExtGet('buildToolsVersion', '28.0.3') defaultConfig { minSdkVersion safeExtGet('minSdkVersion', 16) targetSdkVersion safeExtGet('targetSdkVersion', 27) versionCode 1 versionName "1.0" } sourceSets { main { // let gradle pack the shared library into apk jniLibs.srcDirs = ['./lib'] } } } repositories { maven { // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm url "$rootDir/../node_modules/react-native/android" } } dependencies { implementation 'com.facebook.react:react-native:+' }