CODEWITHSUNDEEP
androidlayoutclasscastexception
Seth Nelson
Seth Nelson

Reputation: 2608

programmatically change layout height, ClassCastException?

I'm trying to "animate" a WebView to drop down and reveal its contents. I've written a handler to increase the height by 1 each time, however, I'm running into a ClassCastException. The code I'm using is:

WebView.LayoutParams params = new WebView.LayoutParams(wv.getLayoutParams());
params.height = height;
wv.setLayoutParams(params);
height++;
this.sleep(20);

On the line wv.setLayoutParams(params), I get a:

java.lang.ClassCastException: android.widget.AbsoluteLayout$LayoutParams

How do I fix this?

Upvotes: 11

Views: 15142

Answers (3)

Ravi
Ravi

Reputation: 2367

use it-

ViewGroup.LayoutParams vc=webview.getLayoutParams();
        vc.height=700;
        vc.width=450;

        webview.setLayoutParams(vc);

It will work

Upvotes: 7

user609239
user609239

Reputation: 3366

following is the code of setting size of activity, i hope this will solve your problem. In my case this code works.

WindowManager.LayoutParams params = getWindow().getAttributes();    
       params.height = 200;
       params.width = 220;         

       this.getWindow().setAttributes(params);

Upvotes: 1

Romain Guy
Romain Guy

Reputation: 98501

The layout paramaters should be of the type of the parent of your view. For instance, if your WebView is inside a LinearLayout, use LinearLayout.LayoutParams.

Upvotes: 27

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