Sprockets for Android 
Extend base components, use widgets, and call utility methods.
Install
compile 'net.sf.sprockets:sprockets-android:4.0.0'Ensure the Data Binding library is enabled.
dataBinding {
enabled true
}
Set minifyEnabled true for all buildTypes (including debug).
If you are using Espresso and get a version conflict error for jsr305, add an exclude line.
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.google.code.findbugs', module: 'jsr305'
}
)Notes
minSdkVersion < 21
Many features will work with lower API levels, though you should carefully test them to ensure that no APIs above your minimum level are accessed. Tell the build system to allow higher API levels with the tools:overrideLibrary attribute in AndroidManifest.xml.
<manifest ...>
<uses-sdk tools:overrideLibrary="net.sf.sprockets"/>