apply plugin: 'com.android.library' def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } repositories { mavenCentral() } buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:2.2.3' } } android { compileSdkVersion safeExtGet('compileSdkVersion', 26) buildToolsVersion safeExtGet('buildToolsVersion', '26.0.3') defaultConfig { minSdkVersion safeExtGet('minSdkVersion', 16) targetSdkVersion safeExtGet('targetSdkVersion', 26) versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } productFlavors { } } dependencies { compile "com.facebook.react:react-native:${safeExtGet('reactNativeVersion', '+')}" //compile 'com.squareup.okhttp3:okhttp:+' //{RNFetchBlob_PRE_0.28_DEPDENDENCY} }