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Start your free trialEliran Elgozi
673 PointsWhy there are no clues to help knowing the steps we should take?! I'm stuck and I can't proceed.
I have no idea what am I doing wrong.
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
protected Button exterminateButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button exterminateButton = findViewById(R.id.button1);
// Declare our view variables
}
}
1 Answer
Jennifer Nordell
Treehouse TeacherHi there, Eliran Elgozi! First, I'd like to say that in my opinion, I believe there are clues as to why your line of code isn't working. The first clue is in the task instructions:
Don't forget to cast the generic View returned by the method!
Secondly, if you click the "preview" button you will be shown the compiler errors where you will find this:
./MainActivity.java:13: error: incompatible types: View cannot be converted to Button Button exterminateButton = findViewById(R.id.button1);
What it's saying is this: you've declared a variable of type Button
, but findViewById
doesn't return a Button
, it returns a View. It can't make the conversion from View to Button by itself. It needs your help. You must cast the View to a Button explicitly.
We do this by:
Button exterminateButton = (Button)findViewById(R.id.button1);
Hope this clears things up!