Why Does Picasso Running In A Background Thread Block OnActivityResult?

We are working on a share mode for photos in an app, and one of the share options is to load an overlay for the image online. If the user shares the photo before the overlay finish

Solution 1:

Looking at your code you are creating a new thread when you don't need to. Picasso has a configurable executor method for threading.

I had an issue when loading over 100+ images using picasso and it would lock up and block the UI Thread on me but this was due to it creating a new Thread every time I called picasso to get an image. I solved this by doing a little research and found that within picasso there is a configurable executor method.

This is my ImageHandler class implementation

public class ImageHandler {

private static Picasso instance;

public static Picasso getSharedInstance(Context context)
{
    if(instance == null)
    {
        instance = new Picasso.Builder(context).executor(Executors.newSingleThreadExecutor()).memoryCache(Cache.NONE).indicatorsEnabled(true).build();
        return instance;
    }
    else
    {
        return instance;
    }
}
}

I don't know that this is your issue, but it would be worth a try if you haven't implemented it yet.
Here is the way I use it to load images

    ImageHandler.getSharedInstance(getApplicationContext()).load(imString).skipMemoryCache().resize(width, height).into(image, new Callback() {
        @Override
        public void onSuccess() {
            layout.setVisibility(View.VISIBLE);
        }

        @Override
        public void onError() {

        }
    });