apply plugin: 'com.android.library' def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } android { compileSdkVersion safeExtGet('compileSdkVersion', 25) buildToolsVersion safeExtGet('buildToolsVersion', "25.0.3") defaultConfig { minSdkVersion safeExtGet('minSdkVersion', 16) targetSdkVersion safeExtGet('targetSdkVersion', 25) testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { implementation fileTree(include: ['*.jar'], dir: 'libs') implementation 'com.facebook.react:react-native:+' implementation 'com.henninghall.android:NumberPickerView:1.1.5' implementation 'org.apache.commons:commons-lang3:3.7' implementation group: 'net.time4j', name: 'time4j-android', version: '4.2-2018i' }