@ TargetApi ( Build . VERSION_CODES . HONEYCOMB_MR2 ) private void showProgress ( final boolean show ) { // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow // for very easy animations. If available, use these APIs to fade-in // the progress spinner. if ( Build . VERSION . SDK_INT >= Build . VERSION_CODES . HONEYCOMB_MR2 ) { int shortAnimTime = getResources ( ) . getInteger ( android . R . integer . config_shortAnimTime ) ; mLoginFormView . setVisibility ( show ? View . GONE : View . VISIBLE ) ; mLoginFormView . animate ( ) . setDuration ( shortAnimTime ) . alpha ( show ? 0 : 1 ) . setListener ( new AnimatorListenerAdapter ( ) { @ Override public void onAnimationEnd ( Animator animation ) { mLoginFormView . setVisibility ( show ? View . GONE : View . VISIBLE ) ; } } ) ; mProgressView . setVisibility ( show ? View . VISIBLE : View . GONE ) ; mProgressView . animate ( ) . setDuration ( shortAnimTime ) . alpha ( show ? 1 : 0 ) . setListener ( new AnimatorListenerAdapter ( ) { @ Override public void onAnimationEnd ( Animator animation ) { mProgressView . setVisibility ( show ? View . VISIBLE : View . GONE ) ; } } ) ; } else { // The ViewPropertyAnimator APIs are not available, so simply show // and hide the relevant UI components. mProgressView . setVisibility ( show ? View . VISIBLE : View . GONE ) ; mLoginFormView . setVisibility ( show ? View . GONE : View . VISIBLE ) ; } }
Shows the progress UI and hides the login form .