我想从壁画库的Bitmap
获取SimpleDraweeView
,并将其保存到SD卡。SimpleDraweeView
是ImageView
的子类,因此它应支持getDrawable()
,但调用此方法将引发ClassCastException
BitmapDrawable bitmapDrawable = (BitmapDrawable) viewHolder.drawee.getDrawable();
ClassCastException: com.facebook.drawee.generic.RootDrawable cannot be cast to android.graphics.drawable.BitmapDrawable
这有什么出路?
最佳答案
莫里森提到的s1rius的回答帮助了我。这是我使用的代码。
ImageRequest downloadRequest = ImageRequest.fromUri(uri);
CacheKey cacheKey = DefaultCacheKeyFactory.getInstance().getEncodedCacheKey(downloadRequest, context);
if (ImagePipelineFactory.getInstance().getMainFileCache().hasKey(cacheKey)) {
BinaryResource resource = ImagePipelineFactory.getInstance().getMainFileCache().getResource(cacheKey);
File cacheFile = ((FileBinaryResource) resource).getFile();
File savedImageFile = new File(Constants.APP_PATH_SAVED_QUOTES, "M1iS1" + "_" + currentPosition + ".jpg");
}
然后我将
cacheFile
复制到savedImageFile
。