用html5编写android程序
    1:首先在 assets 文件夹下保存一个index.html的文件。
<script type="application/x-javascript">
    function drawText() {
      var canvas = document.getElementById("canvas");
      if (canvas.getContext) {
        var ctx = canvas.getContext("2d");
        var message = "First HTML5 page"
        ctx.fillStyle = "#FF0000";
        ctx.font = "30px serif";
		var xPosition = 20;
		var yPosition = 30;        
        ctx.fillText (message,xPosition,yPosition);
      }
    }
  </script>
 <body onload="drawText();">
   <canvas id="canvas" width="300" height="300"></canvas>
 </body>
2:定义两个变量WebView mWebView;
	String path = "file:///android_asset/index.html";
3:在oncreate里写上如下代码
mWebView = (WebView) findViewById(R.id.webview1);
		mWebView.setBackgroundColor(Color.WHITE);
		//mWebView.getSettings().setDefaultTextEncodingName(?"UTF-8");
		mWebView.getSettings().setSupportZoom(true);
		mWebView.getSettings().supportMultipleWindows();
		mWebView.getSettings().setJavaScriptEnabled(true);
		mWebView.clearView();
		mWebView.loadUrl(path);
ok了