毕加索库如何在占位符/错误上使用转换

Question

This is the code i use to display an image with picasso

My problem is that when an album art can't be loaded, i use placeholder or error in picasso, but both don't use the transform option to also blur the image. The image is only blurred when an album art is found.

private void loadAlbumArt(){

    Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");
    Uri albumArtUri = ContentUris.withAppendedId(sArtworkUri, songList.get(songIndex).getAlbumID());

    int[] myImageList = new int[]{R.drawable.image1, R.drawable.image2, R.drawable.image3,
            R.drawable.image4, R.drawable.image5, R.drawable.image6, R.drawable.image7 };

    Random random = new Random();
    int randomNumber = random.nextInt(myImageList.length);


    Picasso.with(getApplicationContext())
            .load(albumArtUri)
            .placeholder(myImageList[randomNumber])
            .transform(new BlurTransformation(getApplicationContext()))
            .noFade()
            .into(mAlbumArtLarge);

    Picasso.with(getApplicationContext())
            .load(albumArtUri)
            .placeholder(myImageList[randomNumber])
            .into(mAlbumArt);

}

Answer 1

Picasso does not allow placeholder and error resource transformations. See the answers here .