MainActivity.java 文件源码

private void fadeOut() {
    contentView.setAlpha(0f);
    contentView.setVisibility(View.VISIBLE);

    contentView.animate()
            .alpha(1f)
            .setDuration(getResources().getInteger(
                    android.R.integer.config_longAnimTime))
            .setListener(null);

    loadingView.animate()
            .alpha(0f)
            .setDuration(getResources().getInteger(
                    android.R.integer.config_longAnimTime))
            .setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    loadingView.setVisibility(View.GONE);
                }
            });
}