Change Relative layout width and height dynamically

Question

Hi i am using following layout structure inside LinearLayout

Answer 1

I faced this problem, the best solution for Change Relative layout width and height dynamically like this

RelativeLayout relMain = (RelativeLayout) convertView.findViewById(R.id.relMain);
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    params.width =200;
 params.height =200;
 params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
        relMain.setLayoutParams(params);

Answer 2

If you intending to change Height, then this would make a trick.

RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.yourId);
relativeLayout.getLayoutParams().height = 100;
relativeLayout.getLayoutParams().width = 100;

Answer 3

You can set views dimensions dynamically using LayoutParams. Something like this:

RelativeLayout layout = (RelativeLayout) findViewById(R.id.yourlayout_id);
// Gets the layout params that will allow you to resize the layout
LayoutParams params = layout.getLayoutParams();
params.height = 320;
params.width = 320;

Answer 4

Android does NOT refresh layout of views with wrap_content once it has been displayed. Even with invalidate() or requestLayout(). So if you add a child view, or modify the content dynamically, you're screwed.

getLayoutParams().height = x plus requestLayout() are a good solution if you know the "x", and if you need to do it ONLY ONCE. After that the wrap_content in LayoutParams is lost, since you have overridden it.

To solve that, I've written a static class that recomputes the sizes and forces the update of the layout for the views with wrap_content. The code and instructions to use are available here:

https://github.com/ea167/android-layout-wrap-content-updater

Enjoy!

Answer 5

give an id to your relative layout in .xml :

android:id="@+id/relativelayout"

now in your java file write this:

RelativeLayout Rl = (RelativeLayout) findViewById(R.id.relativelayout);

RelativeLayout.LayoutParams layout_description = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT or YourUserDefinedwidth,
                        RelativeLayout.LayoutParams.FILL_PARENT or YourUserDefinedHeight);

Rl.setLayoutParams(layout_description);

Answer 6

From below code u can get device height and width:-

Display display = getWindowManager().getDefaultDisplay();
    int width = (display.getWidth() );
    int height = (display.getHeight() );

paramsTop ur realative layout:-

Now u can set height or width what you want.

        paramsTop = new RelativeLayout.LayoutParams(width, height);