android跨线程通讯可以使用android.os.Handler-android.os.Message这两类对象完成。 public static void getResultForHttpGet(final String url,final Handler handler) throws ClientProtocolException, IOException{
      new Thread(){
           @Override          public void run() {
              String result="";               HttpGet httpGet=new HttpGet(url);//              HttpResponse response=new DefaultHttpClient().execute(httpGet);              int statusCode=response.getStatusLine().getStatusCode();              if(statusCode==200){                       HttpEntity entity=response.getEntity();                       result=EntityUtils.toString(entity, HTTP.UTF_8);               }              Message msg=handler.obtainMessage(statusCode, result);              msg.sendToTarget();          }     }.start(); } 原获得返回值之后的代码写到 handler参数对象重写的handleMessage方法中,如果直接发起请求的类不是Activity，可以自定义接口来将信息传递给Activity。 private Handler handler1 = new MyHandler(); private class MyHandler extends Handler{
          public void handleMessage(Message msg) {
              int statusCode = msg.what;             if(statusCode==200){                  String result = msg.obj.toString();                 //do your business             }else{
                  // throw exception or show error message             }         }     }; private Handler handler2 = new MyHandler2(); private class MyHandler2 extends Handler{
          public void handleMessage(Message msg) {
              int statusCode = msg.what;             if(statusCode==200){                  String result = msg.obj.toString();                 //do other business             }else{
                  // throw exception or show error message             }         }     }; 此外handler的post(Runnable r)方法也是跨线程操作的重要方法 //注意，若如此做，在Activity中构建的handler对象在Activity销毁后仍然有可能接收消息并执行handleMessage方法，应设法避免。关键字：handler内存泄漏