webview progress bar

1.

package tuo.test.activity;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.widget.Toast;

public class Browser extends Activity {
	private static final String TAG = "Browser";
	private WebView webView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
		this.getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
				Window.PROGRESS_VISIBILITY_ON);
		setContentView(R.layout.browser);
		loadHtml();
	}
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		// TODO Auto-generated method stub
		if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
			webView.goBack();
			return true;
		}
		return super.onKeyDown(keyCode, event);
	}

	private void loadHtml() {
		String action = getIntent().getStringExtra("action");
		String html = "file:///android_asset/html/person.html?action=" + action;
		webView = (WebView) findViewById(R.id.web_view);
		webView.getSettings().setJavaScriptEnabled(true);
		webView.addJavascriptInterface(this, "android");
		webView.setWebChromeClient(new WebChromeClient() {
			@Override
			public boolean onJsAlert(WebView view, String url, String message,
					JsResult result) {
				// TODO Auto-generated method stub
				Toast.makeText(Browser.this, message, 3000).show();
				result.confirm();
				return true; // I handled it
			}
			
			public void onProgressChanged(WebView view, int newProgress) {
				// TODO Auto-generated method stub
				// super.onProgressChanged(view, newProgress);
				setTitle("loading...");
				setProgress(newProgress * 100);
				if (newProgress == 100) {
					setTitle("");
				}
			}
		});
		webView.loadUrl(html);
	}
	
	public  String  getHISAccount() {
		return "00000";
	}

	
}