WebView 加载数据时显示进度条，加载完后再把进度条取消并显示内容

转载地址：http://blog.sina.com.cn/s/blog_7a66361301011a46.html

webview 加载数据时显示进度条有两种.

第一种方法
这个是加载数据时显示进度条
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS); 
setContentView(R.layout.main);


cWebView = (WebView) findViewById(R.id.Conditions);
   cWebView.getSettings().setJavaScriptEnabled(true);
   cWebView.getSettings().setSupportZoom(true);       
   cWebView.getSettings().setBuiltInZoomControls(true);
   
url = "http://site.baidu.com/";
cWebView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
// Activity和Webview根据加载程度决定进度条的进度大小
// 当加载到100%的时候 进度条自动消失
setTitle("Loading...");
setProgress(progress * 100);
}
});
cWebView.loadUrl(url);


第二种方法
这个是加载数据时显示ProgressDialog


class MyWebViewClient extends WebViewClient{


@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}


@Override
public void onPageFinished(WebView view, String url) {
if(progressBar.isShowing()){
progressBar.dismiss();
}
}


@Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
Toast.makeText(EnterListenter.this, "网页加载出错！", Toast.LENGTH_LONG);
alertDialog.setTitle("ERROR");
alertDialog.setMessage(description);
alertDialog.setButton("OK", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
alertDialog.show();
}
}
protected void initWebView(){
//设计进度条
progressBar = ProgressDialog.show(EnterListenter.this, null, "正在进入网页，请稍后…");
//获得WebView组件
cWebView = (WebView) findViewById(R.id.Conditions);
   cWebView.getSettings().setJavaScriptEnabled(true);
   cWebView.getSettings().setSupportZoom(true);       
   cWebView.getSettings().setBuiltInZoomControls(true);
   url = "http://site.baidu.com/";
   cWebView.loadUrl(url);
alertDialog = new AlertDialog.Builder(this).create();
//设置视图客户端
cWebView.setWebViewClient(new MyWebViewClient());
}

其他参考地址：http://www.cnblogs.com/over140/archive/2013/03/07/2947721.html