当我尝试在Android Studio中扩展ImageView时收到错误消息

Question

In Android Studio I am attempting to extend the ImageView widget, but am getting the error message "there is no default constructor available in 'android.widget.ImageView'" . How can I resolve this error?

My code is as follows:

package com.example.trendpoints;

import android.content.Context; import android.widget.ImageView;

public class CouponImageView extends ImageView {

public CouponImageView(Context c) {

}

}

Answer 1

you just need to add super(c); . The compiler is telling that there is no available default constructor available. The default constructor is the one without parameters, that without super(c) , you are trying to call in an implicit way

public CouponImageView(Context c) {
       super(c);
}