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Android Build a Simple Android App Basic Android Programming Initializing a Button

Posted by Uriah Nevins
Uriah Nevins
1,121 Points

Not sure what it wants me to do here.

The assignment is: "Initialize the showFactButton variable using the findViewById() method like the TextView above it. The ID for the button is showFactButton, and don't forget to cast it to a Button with (Button)!" I am probably just really bad at this whole coding thing, but I don't know what it is asking for when it says to "Initialize the variable." Any help would be appreciated; my code is below.

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;
    }
}

1 Answer

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Uriah,

just do it like the line above. Declare a Button and don´t forget to cast it :)

Button showFactButton = (Button) findViewById(R.id. showFactButton);

showFactButton is the Id. The Button inside the parenthesis tells the compiler that we are assigning a Button to "showFactButton".

Makes sense?

Grigorij

Uriah Nevins
Uriah Nevins
1,121 Points

Yes, this makes sense, Grigorij. Thank you.

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

You are very welcome !

Glad I could help.

See you in the forum