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Android Build an Interactive Story App (Retired) User Input Finding Views by IDs

There's a code challenge right after introduction!!!


I don't know if this is wrong or not. But right after the introduction, There's a code challenge which i don't know what's that about.

Any mistake happened on this ?

Thanks, Jey.

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

    protected Button mExterminateButton;

    public void onCreate(Bundle savedInstanceState) {

        // Declare our view variables



1 Answer

Matin Shoghi
Matin Shoghi
10,978 Points

Hi Jaber,

I don't think it is a mistake. I think it is to make sure that you know how to initialize variables which were taught in the previous android class ("Build a Simple Android App").

What you have to do is to add this line: Button mExterminateButton = (Button) findViewById(R.id.button1);

This initializes the Button (mExterminateButton) using the findViewById method.

Hope this helps :)

It helped, Thank you ham vatan :D