[Tip] Injecting keystrokes into a webview

[Dave Smart]

Put this in the header of your main HTML file inside the WebView :-

<script>

        function SimKey( keyCode, wait ) 

        {

            dispatchKey( 'keydown', keyCode );

            setTimeout( function(){ dispatchKey('keyup',keyCode); }, wait?wait:0 );

        }

        

        function dispatchKey( mode, code )

        {

            var event = document.createEvent('Event'); 

    event.initEvent(mode, true, true); 

            event.keyCode = code;

            window.dispatchEvent(event);

        }

</script>

Do this in your main JavaScript file to send a SPACE key:-

   web.Execute( "SimKey(32);" ); 

Get more keycodes from here :- http://keycode.info/

[Steve Garman]

Dave's code is very useful but I find the keycode.info page difficult to access from my phone, so I wrote a little function that will let me choose most keycodes as a string.

//these two are the same
sendKey("\r");
sendKey(13);

//these two are the same
sendKey(" ");
sendKey(32);

//these two are the same
sendKey("w");
sendKey(139);

//pass a numeric keycode or a string
//if a string, the first character is converted to a keycode
function sendKey(code)
{
var skel = "SimKey(#);"
if (typeof code == "string")
code = code.charCodeAt(0);
var cmd = skel.replace(/#/,code);
web.Execute( cmd );
}

[Dave Smart]

Here is another keycode reference site:-

https://css-tricks.com/snippets/javascript/javascript-keycodes/