How to display image on UI when user selects any image from gallery?

[engr-erum]

i m using this code : Initially when i select image from gallery the same image is shown to user sometimes twice , thrice or even 5times . After some interval of time its showing fine why is this happening ?

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode == RC_PHOTO_PICKER && resultCode == RESULT_OK) { Uri selectedImageUri = data.getData(); Log.d(TAG,"path:"+selectedImageUri.toString()); StorageReference photoReference = mStorageReference.child("images/"+selectedImageUri.getLastPathSegment()); photoReference.putFile(selectedImageUri).addOnSuccessListener(this, new OnSuccessListener() { @Override public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { Uri downloadUri = taskSnapshot.getDownloadUrl(); MessageModelClass messageModelClass = new MessageModelClass(); messageModelClass.setImageUrl(downloadUri.toString()); messageModelClass.setmMessage(null); messageModelClass.setmUserName(userName); mDatabaseReference.push().setValue(messageModelClass); //messageAdapter.notifyDataSetChanged(); } }).addOnFailureListener(this, new OnFailureListener() { @Override public void onFailure(@NonNull Exception e) {

            }
        }).addOnCompleteListener(this, new OnCompleteListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
                messageAdapter.notifyDataSetChanged();
            }
        });

}

but the last selected image from gallery is shown to the user sometimes twice or thrice ? Why is this happening ?