ArrayAdapter

[Kumar Aditya21]

I am getting problem with this code
public class WordAdapter extends ArrayAdapter<Word>{
@override
public View getView(int position, View convertView, ViewGroup parent) {
return super.getView(position, convertView, parent);
}
}
it is giving me the error
There is no default constructor available in 'android.widget.ArrayAdapter'.
Can anyone help me out.

 

[Deleted User]

You need to provide a constructor method for your WordAdapter class

public class WordAdapter extends ArrayAdapter<Word>{
  
  public WordAdapter(Context context, ArrayList<Word> words) {
      super(context, 0, words);
   }

  @override
  public View getView(int position, View convertView, ViewGroup parent) {
    return super.getView(position, convertView, parent);
  }
}

 

[Kumar Aditya21]

Bro it worked out in the code but can you please explain it more i am not able to understand how it is working.

 

[Deleted User]

Yeah sure. Because you didn't write a constructor method, then the Java compiler automatically writes one for you during the compile process. That is it will generate a default constructor method with no parameters

public WordAdapter() {
      super();
}

Note that line "super()". That's trying to to call the default constructor method on the super class - ArrayAdapter. And there is no such constructor defined for that class, therefore you get a compiler error.

 

[Deleted User]

Now that you defined your own constructor, the compiler is happy!