How to set layout parameters in Relativelayout using java code

Question

I have created a layout using RelativeLayout, but I need to change the top margin when orientation changed to landscape .

   @Override
  public void onConfigurationChanged(Configuration newConfig) {
   super.onConfigurationChanged(newConfig);

   // Checks the orientation of the screen
   if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {

       RelativeLayout.LayoutParams labelLayoutParams = new RelativeLayout.LayoutParams(
                LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
      // labelLayoutParams.setMargins(0, -100, 0, 0);
       layout.setLayoutParams(labelLayoutParams);

       Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
   }

but i get following exception

 06-25 22:22:31.166: E/AndroidRuntime(8211): java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams

so please help how can set layout parameters specially top margin for relativelayout? programaticaly

My suggestion is to add use LayoutParams with the Relativelayout prefix, like this RelativeLayout.LayoutParams.FILL_PARENT. Maybe the IDE uses the wrong import such as LinearLayout for LayoutParams. — kameny, Jun 25 '12 at 18:33
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams( RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT); — Dheeresh Singh, Jun 25 '12 at 18:34

score 0 · Answer 1 · edited Jul 23 '12 at 15:49

0

Try this:

RelativeLayout.LayoutParams labelLayoutParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
labelLayoutParams.topMargin = 10;
layout.setLayoutParams(labelLayoutParams);

edited Jul 23 '12 at 15:49

David Kroukamp

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answered Jun 25 '12 at 18:34

petey

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score 0 · Answer 2 · edited May 23 '17 at 12:27

0

try this way as per Set the absolute position of a view

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT);

    params.topMargin = 60;

    layout.setLayoutParams(params);

edited May 23 '17 at 12:27

Community

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answered Jun 25 '12 at 18:36

Dheeresh Singh

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`FILL_PARENT` is now deprecated, please use `MATCH_PARENT` – C_B Apr 09 '14 at 10:16

How to set layout parameters in Relativelayout using java code

2 Answers2