Can't implement OnCheckedChangeListener? [duplicate]

问题

This question already has answers here:

I can't create an onCheckedChanged listener for my RadioGroup (3 answers)

Closed 6 years ago.

I've a question.

Here is my code:

public class MyCheckBox extends CheckBox implements OnCheckedChangeListener {



public MyCheckBox(Context context, AttributeSet attrs) {
    super(context, attrs);
    // TODO Auto-generated constructor stub
}

But "onCheckedChangeListener" can't be implemented ( eclipse marks as red squiggly line). It says "Import onCheckedChangeListener", I'm clicking but nothing happens.

Is this eclipse bug or something else?

回答1:

OnCheckedChangeListener is for radio group. So you need to implement android.widget.CompoundButton.OnCheckedChangeListener for CheckBox

回答2:

You need to make sure you have imported:

import android.widget.CompoundButton.OnCheckedChangeListener;

Problem could be here. Also tap CTRL+SHIFT+O that will clean your imports and add missing imports as well.

If it won't work, restart Eclipse and clean your project. If it still doesn't work, reinstall Eclipse completely.

来源：https://stackoverflow.com/questions/19841880/cant-implement-oncheckedchangelistener