How to get width and height of a Webview in androi

Question

I want to determine the width and the height of the WebView. I have already tried it using:

webView.getWidth();
webView.getHeight();

but the resulting log always shows them to be 0.

Answer 1

Hmmm - I looked through the WevView source and I can see that internally they are using View#getWidth and View#getHeight here's one of the WebView's private methods:

/*
 * Return the width of the view where the content of WebView should render
 * to.
 */
private int getViewWidth() {
    if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) {
        return getWidth();
    } else {
        return getWidth() - getVerticalScrollbarWidth();
    }
}

As noted in the comments you have to make sure you are measuring it after you assign the activity layout e.g. setContentView(R.layout.mylayout);

Answer 2

You were probably checking for the sizes too soon, most likely in the onCreate. Instead, try this:

webView.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageFinished(WebView webView, String url) {
                super.onPageFinished(webView, url);
                Log.i(TAG, findViewById(R.id.my_component).getWidth(););
            }
        });

Answer 3

you are checking size of webview too early. you can try this in following method

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    // TODO Auto-generated method stub
    super.onWindowFocusChanged(hasFocus);
            webView.getWidth();
            webView.getHeight();
}

Answer 4

I had the same problem. I just put initWebView method in onWindowFocusChangedt.

public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    initWebView();
}


private void initWebView(){
    if(isOnline()){
        venueWebView = (WebView) findViewById(R.id.venueWebView);
        String url = "some url";
        int viewWight = venueWebView.getWidth();
        int viewHeight = venueWebView.getHeight();
        venueWebView.loadUrl(url);
    }

Answer 5

You need the width and height of the WebView CONTENTS, after you loaded your HTML. YES you do, but there is no getContentWidth method (only a view port value), AND the getContentHeight() is inaccurate !

Answer: sub-class WebView:

/*
  Jon Goodwin
*/
package com.example.html2pdf;//your package

import android.content.Context;
import android.util.AttributeSet;
import android.webkit.WebView;

class CustomWebView extends WebView
{
    public int rawContentWidth   = 0;                         //unneeded
    public int rawContentHeight  = 0;                         //unneeded
    Context    mContext          = null;                      //unneeded

    public CustomWebView(Context context)                     //unused constructor
    {
        super(context);
        mContext = this.getContext();
    }   

    public CustomWebView(Context context, AttributeSet attrs) //inflate constructor
    {
        super(context,attrs);
        mContext = context;
    }

    public int getContentWidth()
    {
        int ret = super.computeHorizontalScrollRange();//working after load of page
        rawContentWidth = ret;
        return ret;
    }

    public int getContentHeight()
    {
        int ret = super.computeVerticalScrollRange(); //working after load of page
        rawContentHeight = ret;
        return ret;
    }
//=========
}//class
//=========