Question 260383 in Android Studio Question posted in
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Android Studio – Class 'Anonymous class derived from Callback' must either be declared abstract or implement abstract method 'onError(Exception)' in 'Callback'

Class ‘Anonymous class derived from Callback’ must either be declared abstract or implement abstract method ‘onError(Exception)’ in ‘Callback’

I am opening an old project. Now how to solve this problem?

my code is:

 Picasso.get().load(p.getImageUrl()).into(iv, new Callback() {
                    @Override
                    public void onSuccess() {

                        Bitmap bitmap = convertImageViewToBitmap(iv);
                        Bitmap hiResBitmap = getResizedBitmap(bitmap, 600, 1000);
                        iv.setImageBitmap(hiResBitmap);

                        // iv.setImageBitmap(bitmap);
                        iv.setVisibility(View.VISIBLE);
                        //   saveImageAndSavePathToSharedPrefrence(bitmap, p.getPost_id());
                        Log.i(TAG, "onSuccess: From WebUrl " + " Position :  " + position + " PostId: " + p.getPost_id() + " Url : " + p.getImageUrl());

                        tvPhotoLink.setText("Photo Link");
                        tvPhotoLink.setTextColor(Color.BLUE);
                        tvPhotoLink.setOnClickListener(new View.OnClickListener() {
                            @Override
                            public void onClick(View view) {
                                go_to_website(p.getImageUrl());
                            }
                        });
                        tvPhotoLink.setVisibility(View.VISIBLE);
                    }

                    @Override
                    public void onError() {

                        Log.i(TAG, "onSuccess:3_0 Picasso Error: from Net  " + " Image Position Url is not Valid: " + "ImageUrl is :  " + p.getImageUrl());

                        tvPhotoLink.setVisibility(View.GONE);
                        iv.setVisibility(View.GONE);

                    }
                });

I want to run the file and find the solution

Tags:

2

Answers


  1. 0

    In the snippet the wrong signature of onError() is used, so the required method is not implemented. Please try replacing the line public void onError() { with public void onError(Exception e) {

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  2. 0

    Error message is telling you that your anonymous class derived from Callback must implement the abstract method onError(Exception). In your code, you have implemented onError() without an Exception parameter. You need to modify your onError method to take an Exception as a parameter.

    @Override
public void onError(Exception e) {
//...
}

    see for reference: https://square.github.io/picasso/2.x/picasso/com/squareup/picasso/Callback.html

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