Fresco加载资源图片是黑色问题

Uri uri = Uri.parse("res://" + "应用包名"+"/"+ R.drawable.xxx);
simpleDraweeView.setAspectRatio(0.8f);//我的图片要宽高比
simpleDraweeView.setImageURI(uri);

simpleDraweeView.setAspectRatio(0.8f);
ImageRequest request=ImageRequestBuilder.newBuilderWithResourceId(R.drawable.xxx)
.build();
PipelineDraweeController controller = (PipelineDraweeController)
Fresco.newDraweeControllerBuilder()
.setImageRequest(request)
.setOldController(simpleDraweeView.getController())
.build();
simpleDraweeView.setController(controller);