Initialize the UpdateManager in Activity

MainActivity.java

// Declare the UpdateManager
UpdateManager mUpdateManager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    // Initialize the Update Manager with the Activity and the Update Mode
    mUpdateManager = UpdateManager.Builder(this).mode(UpdateManagerConstant.FLEXIBLE);
    // Call start() to check for updates and install them
    mUpdateManager.start();

}