This is a basic branch for programmer to develop Android Apps, which includes of Jetpack fwk and original diy APIs. Jetpack: MVVM; Databinding; diy APIs: BitmapUtil; CrashManager; FragmentSwitcher; SPUtils; UDP; Zxing's QRCode; Expansion: Kotlin extension function;

To better understand this Master branch; please read source code by follow order： app/src/main/activities/login/LoginActivity -> base.BaseVMActivity -> base.BaseActivity

BaseFragment and tools Please analysis by youyourbigself! Let's go body!!!!!!