UriDrawable.java

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.net.Uri;
import android.util.Log;

import com.squareup.picasso.Picasso;
import com.squareup.picasso.Picasso.LoadedFrom;
import com.squareup.picasso.Target;

public class UriDrawable extends LayerDrawable {

	private Resources mResources;

  public UriDrawable(Context context, Uri uri, Drawable placeholder) {
		this(context, uri, placeholder, null);
	}

	public UriDrawable(Context context, Uri uri, int placeholderResId) {
		this(context, uri, context.getResources().getDrawable(placeholderResId));
	}

	public UriDrawable(Context context, Uri uri, int placeholderResId,
			int errorResId) {
		this(context, uri,
				context.getResources().getDrawable(placeholderResId), context
						.getResources().getDrawable(errorResId));
	}

	public UriDrawable(Context context, Uri uri, Drawable placeholder,
			Drawable error) {
		super(new Drawable[] { placeholder });
		Picasso picasso = Picasso.with(context);
		picasso.setDebugging(BuildConfig.DEBUG);
		mResources = context.getResources();
		picasso.load(uri).placeholder(placeholder).error(error).into(mTarget);
	}

	private Target mTarget = new Target() {

		@Override
		public void onPrepareLoad(Drawable placeHolderDrawable) {
			setDrawableByLayerId(getId(0), placeHolderDrawable);
			invalidateSelf();
		}

		@Override
		public void onBitmapLoaded(Bitmap bitmap, LoadedFrom from) {
			setDrawableByLayerId(getId(0), new BitmapDrawable(mResources,
					bitmap));
			invalidateSelf();
		}

		@Override
		public void onBitmapFailed(Drawable errorDrawable) {
			setDrawableByLayerId(getId(0), errorDrawable);
			invalidateSelf();
		}
	};

}