/**
  * 打开url文件
  *
  * @param url
  */
 private void openImageByUrl(String url) {
   InputStream is = FileUtil.getFileStream(url);
   if (is != null) TileBitmapDrawable.attachTileBitmapDrawable(imageView, is, placeHolder, null);
 }
 /**
  * 打开raw文件
  *
  * @param rawId
  */
 private void openImageByRawId(int rawId) {
   InputStream is = getResources().openRawResource(rawId);
   TileBitmapDrawable.attachTileBitmapDrawable(imageView, is, placeHolder, null);
 }