setOnCheckedChangeListener cannot resolve symbol in Check Box

Question

I'm trying to make a button that is disabled until you check the checkbox

Button mButton=(Button)findViewById( R.id.registerBut);
    CheckBox mCheckBox= findViewById( R.id.checkBox);

mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        mButton.setEnabled(isChecked);
    }
});

setOnCheckedChangeListener and CompoundButton buttonView says- "cannot resolve symbol" ,
new OnCheckedChangeListene says - "Invalid method declaration; return type required"

If you could please help me solve this. Thanks in advance :D

why did you double star the names? Did you want to highlight them? — Jakob F, Feb 12 '20 at 16:21
Can you add more details about how did you initialize `mCheckBox`? — Md. Asaduzzaman, Feb 12 '20 at 16:31
well u need to import the listener and button and youremove the closing normal bracket in line 1. — Jakob F, Feb 12 '20 at 16:31
nothing happens when I press alt+enter so how can I import it? Also what closing normal bracket? — Vedo, Feb 12 '20 at 16:37

score 0 · Accepted Answer · answered Feb 12 '20 at 16:37

There is no problem in your code unless you correctly import dependencies.

import android.widget.CheckBox;
import android.widget.CompoundButton;

CheckBox mCheckBox = new CheckBox(this);
mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        // your code
    }
});

setOnCheckedChangeListener cannot resolve symbol in Check Box

1 Answers1