Why I can not set a custom size for my relativeLayout object

Question

In the following code , Why I can not set a custom size for my relativeLayout object? The resolution of my device is 240 * 320.

RelativeLayout relativeLayout;
    @Override
    protected void onCreate(Bundle bundle){
            super.onCreate(bundle);
    relativeLayout = new RelativeLayout(this);
    relativeLayout.getLayoutParams().width=240;
        relativeLayout.getLayoutParams().height=320;
    setContentView(relativeLayout);}

I can use the `match_parent`. But I want a scientific reason for this problem. — and, Sep 04 '15 at 17:31
http://stackoverflow.com/questions/3224193/set-the-layout-weight-of-a-textview-programmatically and make sure your screen size is in fact 240px (and not dp) — Pedro Oliveira, Sep 04 '15 at 17:32

score 1 · Accepted Answer · answered Sep 04 '15 at 17:50

You should try to use a layout parameter like this:

RelativeLayout relativeLayout = new RelativeLayout(this);
//You can put the background in another color to check were is the layout
//relativeLayout.setBackgroundResource(android.R.color.black);

RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(240, 320);
relativeLayout.setLayoutParams(lp);

setContentView(relativeLayout);

Why I can not set a custom size for my relativeLayout object

1 Answers1