How to refresh the content of an ImageView

Question

I have a screen with an ImageView containing the actual profile picture. I can edit that profile picture either by taking a picture with the camera or by picking a picture from the sd card. I store the new chosen profile picture under the same path as the old (i overwrite it) which is logical i guess.

However when i set a new profile picture to my ImageView it does not get refreshed. I have to restart the App to see the change.

this.imageView.invalidate();

is what all people are telling me to do when i brows google but no, this is not working! So how can i force my imageview to load the new profile picture?

I load the image into the ImageView with help of Picasso:

Picasso picasso = Picasso.with(context);

if(reload) {
    picasso.invalidate(new File(fileName));
}

RequestCreator requestCreator = picasso.load(new File(fileName));
requestCreator.into(imageView);

Answer 1

Picasso caches loaded images to speed up the loading process. This means that if you are trying to reload the same exact picture it loads the cached version and it does not read the changed File from the disk.

You need to tell Picasso that the picture has changed and that it needs to reload the picture from the disk by invalidating the cache. The way you do this is like this:

File file = new File(fileName);
Picasso picasso = Picasso.with(context);
picasso.invalidate(file);
picasso.load(file).into(imageView);