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

Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer
Posted by Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer

i am new in this ; i was doing just simple java before never android

can somebody help?

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

public class MainActivity extends Activity {

    protected Button mExterminateButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Declare our view variables
        mExterminateButton = Button();


    }

}

1 Answer

Melodie 1
Melodie 1
3,931 Points
Melodie 1
Melodie 1
3,931 Points

The button declaration is supposed to look like this :

Button mExterminateButton = (Button) findViewById(R.id."here goes the id of the button");

We use the cast (Button) because findViewById() returns a generic view.