Andoid(安卓)异步加载网页内容

一、需要在清单文件中注册网络权限

二、建立一个工具类 HtmlService.java

1.第一个方法用 get方法获取网页的源码,在return返回

public static String getHtml(String path)throws Exception{

URL url =new URL(path);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestMethod("GET");

conn.setReadTimeout(5000);

InputStream itstream = conn.getInputStream();

byte[] data =readInputStream(itstream);

String html =new String(data,"UTF-8");

return html;

}

2.第二个方法,解析返回的数据

private static byte[] readInputStream(InputStream inStream)throws Exception {

ByteArrayOutputStream outStream =new ByteArrayOutputStream();

byte[] butffte =new byte[1024];

int len=0;

while ((len=inStream.read(butffte))!=-1){

outStream.write(butffte,0,len);

}

inStream.close();

return outStream.toByteArray();

}

3.在MainActivity中调用HtmlService这个类

1.在活动中调用网络操作需要用子线程来操作.

new Thread(){

@Override

        public void run() {

try{

String doc = HtmlService.getHtml(“这里是获取网页的网址”);

date = doc.toString();

Log.d(String.valueOf(this),"数据:"+date);

}catch (Exception e){

Log.d(String.valueOf(this),"程序异常"+e.toString());

}

}

}.start();

直接将这个子线程写进方法里面就完成.

            出处:唐瀚林 

                                            ——挥舞着本子和键盘,要将这世界写个明白.