复制代码 代码如下:

package com.weizhu.lan.view;

import com.weizhu.lan.util.MyprogressDialog;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.Intent;

import android.net.ConnectivityManager;

import android.os.AsyncTask;

import android.os.Bundle;

import android.os.Handler;

import android.view.KeyEvent;

import android.view.Window;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.widget.ProgressBar;

public class HelpCenter extends Activity {

//50766649

private String urlHelp = "http://www.jb51.net",

userid = "userid=";

private String yqhId;

private WebView web;

private Handler hand;

private ProgressBar pb;

private MyAsyncTask myAsy;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.help_webview);

yqhId = getIntent().getStringExtra("yqhId");

web = (WebView) findViewById(R.id.help_WebView1);

web.getSettings().setBuiltInZoomControls(true); //可放大、缩小

myAsy = new MyAsyncTask();

final String str = urlHelp;

myAsy.execute(str);

}

class MyAsyncTask extends AsyncTask<String, String, Void>{

@Override

protected Void doInBackground(String... params) {

web.loadUrl(params[0]);

web.setWebChromeClient(new WebChromeClient(){

@Override

public void onProgressChanged(WebView view, int newProgress) {

super.onProgressChanged(view, newProgress);

pb.setProgress(newProgress); //它自己会处置进度条

}

});

return null;

}

@Override

protected void onPostExecute(Void result) {

}

@Override

protected void onPreExecute() {

pb = (ProgressBar) findViewById(R.id.help_progressBar2);

pb.setProgress(0);

}

}

}