android {
compileSdkVersion 28
defaultConfig {
minSdkVersion 15
targetSdkVersion 28
...
}
...
}
dependencies {
implementation 'androidx.core:core-ktx:1.0.0-alpha3'
implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
implementation 'com.google.android.material:material:1.0.0-alpha3'
}