How to implement inherited abstract method?

Question

I try to implement 2 interfaces

public class SecondScreenActivity extends Activity implements
OnCheckedChangeListener, View.OnClickListener {

but for OnCheckedChangeListener I get this error

The type SecondScreenActivity must implement the inherited abstract method
CompoundButton.OnCheckedChangeListener.onCheckedChanged(CompoundButton, boolean)

How can I implement inherited abstract method? I never met this before...

Answer 1

You extended a class which has abstract methods ( methods without body) in order to extend this class you must implement the methods.

to implement a method you must name it the same way, with the same parameters, or click ctrl+1 on the error line in eclipse and select implement abstract methods.

Answer 2

To implement a method add it to your class with the same signature. Here we need a method called onCheckedChange with parameters CompoundButton and boolean . So, add a method such as:

@Override
public void onCheckedChanged(CompoundButton button, boolean checked){
    //your code
}