Create ImageView programmatically without Layout

Question

I'm trying to create an ImageView in code, setting the image resource and then add the ImageView as a child-view to my main view. All examples I found used a layout for that. But inside the constructor of my view I can't figure out how to do that.

Here are the code snippets:

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new CanvasView(this));

    }
}

The view:

public class CanvasView extends SurfaceView implements SurfaceHolder.Callback {
    public CanvasView(Context context) {
        super(context);

        SurfaceHolder sh = getHolder();
        sh.addCallback(this);

        ImageView iv = new ImageView(context);
        iv.setImageResource(R.drawable.wand);

        // how to add iv to myself?
    }
}

Answer 1

you can not do that this way. you need a container for both: For instance

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new MyContainer(this));

    }
}

public class MyContainer extends LinearLayout {
  public MyContainer(Context context) {
    addView(new CanvasView(context));
    ImageView iv = new ImageView(context);
    iv.setImageResource(R.drawable.wand);
    addView(iv);
  }
}

remember that if you need to inflate the view directly from a xml file you need, for both MyContainer and CanvasView the constructor thats takes as parameters Context and AttributeSet