Question

here is my code:

public class MainMenuActivity extends Activity implements OnClickListener {

    public int width;
    public int height;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mainmenu);

        Button play = (Button) findViewById(R.id.playbut);
        Button credits = (Button) findViewById(R.id.creditsbut);
        Button help = (Button) findViewById(R.id.helpbut);

        play.setOnClickListener(this);
        credits.setOnClickListener(this);
        help.setOnClickListener(this);

        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        width = dm.widthPixels;
        height = dm.heightPixels;       
}

the problem is, public int width is not getting being set to dm.widthPixels and likewise for height. Any tips?

Answer 1

The code as given should result in the attributes being set. If it is not happening then there must be something else going on:

• Maybe the method is not getting called.
• Maybe the values of the dm pixel attributes are not what you expect them to be.
• Maybe something else is changing the width and height values after the method call.
• …
• Maybe the code you are actually running doesn’t correspond to the source code that you’ve shown us … or the actual code that you are looking at. (For instance, you might have a problem with your build / deploy procedures.)

---

If you are stumped, try running using a debugger, and setting a breakpoint in the method. Single step the method, and examine the actual values being set.