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Android Build a Simple Android App (2014) Basic Android Programming Initializing a Button

Thomas Beaudry
Thomas Beaudry
29,084 Points
Posted by Thomas Beaudry
Thomas Beaudry
29,084 Points

Need assistance please? My "Android" synthax isn't very clear to me?

I'm having trouble understanding exactly what their asking me to do here, please excuse my ignorance!

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

public class FunFactsActivity extends Activity {

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

        // Declare our View variables and assign them the Views from the layout file
        TextView factLabel = (TextView) findViewById(R.id.factTextView);
        Button showFactButton;
    }
}
Thomas Beaudry
Thomas Beaudry
29,084 Points
Thomas Beaudry
Thomas Beaudry
29,084 Points

Show fact button variable using the find view by id () method like the view text above it, the id for the button is shownfact button, don't forget to cast a button with (button)

2 Answers

orbyt
orbyt
10,358 Points

So its simply saying to initialize the showFactButton. This button has been defined in a layout XML file, so you now need to "hook it up" in code, so you can work with it. This is simply done in the same way as the TextView in the example they provided:

Button showFactButton = (Button) findViewById(R.id.showFactButton);
Thomas Beaudry
Thomas Beaudry
29,084 Points
Thomas Beaudry
Thomas Beaudry
29,084 Points

Thanks a lot Orbyt, yes I messed up by forgeting to put a space before the variable, thanks for your help, greatly appreciated!

orbyt
orbyt
10,358 Points

Np, be sure to mark this as answered if your problems resolved.