Java：匿名 new View.OnClickListener() 可以替换为 lambda

Question

Can anyone help me with this error

Anonymous new View.OnClickListener() can be replaced with lambda

button_copy.setOnClickListener(new View.OnClickListener() {
    
      @Override
      public void onClick(View v) {
            String scanned_text = textview_data.getText().toString();
            copyToClipBoard(scanned_text);
      }
});

Answer 1

Can anyone help me with this error

As noted in the comments it is NOT an error. It is style advice provided by your IDE (I guess).

You could ignore it, and there are probably IDE-specific settings to selectively turn off this kind of message. But it is easy to just follow the IDE's suggestion and replace the anonymous class with a lambda; eg

button_copy.setOnClickListener(
        v -> copyToClipBoard(textview_data.getText().toString());