implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
implementation 'com.google.android.material:material:1.1.0-alpha06'
+ implementation 'androidx.preference:preference:1.0.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation project(':opencv41')
}