buildscript { repositories { jcenter() } } apply plugin: 'com.android.library' dependencies { implementation 'com.android.support:support-v13:28.0.0' } android { compileSdkVersion 28 buildToolsVersion '28.0.3' defaultConfig { minSdkVersion 18 targetSdkVersion 28 } buildTypes { release { zipAlignEnabled true minifyEnabled true shrinkResources false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } }