Zoomin in my webview will not work on a double tab. I am using Motorola Droid A855.
                +1 
                A: 
                
                
              Have you explicitly enabled the zoom controls? They are disabled by default.
WebSettings webSettings = webView.getSettings();
webSettings.setBuiltInZoomControls(true);
                  Jim Blackler
                   2010-04-10 08:42:17
                
              This doesn't do anything. Double tap still not working with it (on Nexus One w/ Froyo 2.2)
                  Mathias Lin
                   2010-06-13 18:29:00
                
                +3 
                A: 
                
                
              From some digging in the Android 2.0/2.1 source code, it seems like double-taps are ignored unless you turn on the webview's WebSettings' useWideViewport option:
mywebviewinstance.getSettings().setUseWideViewport(true)
though this appears not to be documented anywhere that I can find, and has some other effects on the max-zoomed-out state of the WebView.
You can also always roll your own double-click handling with a GestureListener, too.
                  Yoni Samlan
                   2010-05-11 03:42:22