SimpleDisplayer.java 文件源码

private void fadeInDisplay(ImageView imageView,Bitmap bitmap){
    final TransitionDrawable td =
               new TransitionDrawable(new Drawable[] {
                       new ColorDrawable(android.R.color.transparent),
                       new BitmapDrawable(imageView.getResources(), bitmap)
               });
       imageView.setImageDrawable(td);
       td.startTransition(300);
}