Upload image from gallery and display in AlertDialog

Question

I'm trying to display an image uploaded from the gallery in an AlertDialog but it's not working for me right now.

My code:

private void dispatchTakePictureIntent() {
        Intent imageGetter = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        activityLauncher.launch(imageGetter);
    }

ActivityResultLauncher<Intent> activityLauncher = registerForActivityResult( new ActivityResultContracts.StartActivityForResult(), result -> {
        Uri selectedImage = result.getData().getData();
        String[] filePathColumn = {MediaStore.Images.Media.DATA};//Array size of 1, and we put in a string
        Cursor cursor = getContext().getContentResolver().query(selectedImage, filePathColumn, null, null, null);
        cursor.moveToFirst();
        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String user_image_path = cursor.getString(columnIndex);
        myImageView = new ImageView(getContext());
        Picasso.get().load(user_image_path).fit().centerCrop().into(myImageView);
        AlertDialog.Builder builder =
                new AlertDialog.Builder(getContext()).
                        setMessage("Message above the image").
                        setPositiveButton("OK", (dialog, which) -> dialog.dismiss()).
                        setView(myImageView);
        builder.create().show();
        cursor.close();
    });

The gallery opens up and I can choose a picture but after I choose a picture it goes back and a blank dialog with no image (the message is there) shows up.

I tried adding "file:/// " to the Picasso but that doesn't work.

Thanks.

Answer 1

Why not use the Uri directly to display the picture? Just like:

Uri selectedImage = result.getData().getData();
Picasso.get().load(selectedImage).fit().centerCrop().into(myImageView);

At the same time, it is worth noting that

resolver.query()

is a I/O operation. It is not recommended to operate directly on the main thread