PaymentRequestSection.java 文件源码

/**
 * Starts the animation to make the update text view fade in then fade out.
 */
private void startUpdateViewAnimation() {
    // Create and start a fade in anmiation for the mUpdatedView. Re-use the current alpha
    // to avoid restarting a previous or current fade in animation.
    Animation in = new AlphaAnimation(mUpdatedView.getAlpha(), 1.0f);
    in.setDuration(UPDATE_TEXT_ANIMATION_DURATION_MS);
    in.setInterpolator(new LinearOutSlowInInterpolator());
    in.setFillAfter(true);
    mUpdatedView.startAnimation(in);

    // Cancel all pending fade out animations and create a new on to be executed a little
    // while after the fade in.
    mHandler.removeCallbacks(mFadeOutRunnable);
    mHandler.postDelayed(mFadeOutRunnable, UPDATE_TEXT_VISIBILITY_DURATION_MS);
}