Dynamically changing the linearlayout width or height on Android

Question

I am trying to change linear layout or any other widget width or height dynamically but throwing exception.

My layout is:

Answer 1

Check this - http://smartandroidians.blogspot.com/2010/04/changing-layout-height-dynamically.html

ll.getLayoutParams().height = 300;
ll.getLayoutParams().width = 200;
ll.requestLayout();

This works also on event handler.

Answer 2

This simple way to do your task:

setContentView(R.id.main);    
LinearLayout layout= (LinearLayout) findViewById(R.id.left);
int width=60;
int height=60;
LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(width,height);
layout.setLayoutParams(parms);

and another way if you want to give screen size in height and width then use below code :

setContentView(R.id.main);    
Display display = getWindowManager().getDefaultDisplay();
LinearLayout layout= (LinearLayout) findViewById(R.id.left);
int width=display.getWidth();
int height=display.getHeight();
LinearLayout.LayoutParams parms = new inearLayout.LayoutParams(width,height);
layout.setLayoutParams(parms);

hope use full to you.

Answer 3

The problem here is that when you set the layout params the type needs to be that of the parent, in this case that is a FrameLayout. You need to do this:

ll.setLayoutParams(new FrameLayout.LayoutParams(30,60));

Answer 4

You can use this method inside your utils class to set height and width dynamically.

 public void setWidthAndHeight(Context context,RelativeLayout view,int width, int height) {
                width = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, width, context.getResources().getDisplayMetrics());//used to convert you width integer value same as dp
                height = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, height, context.getResources().getDisplayMetrics());
               //note : if your layout is LinearLayout then use LinearLayout.LayoutParam
                view.setLayoutParams(new RelativeLayout.LayoutParams(width, height));
         }