android.os.NetworkOnMainThreadException异常_冰风漫天_新浪博客

DefaultHttpClient client = new DefaultHttpClient();

HttpResponse httpResponse = client.execute(httpRequest);

这段代码在虚拟机可以运行，到真机上却无法运行，后来发现是sdk版本问题，虚拟机用的android 2.2,真机是4.2，会报NetworkOnMainThreadException错误，高版本的android sdk不允许在主线程中调用这类网络访问的代码，估计主要是怕由于网络原因把应用卡死吧，那就改成用线程去做呗。

新加一个类，把操作放进线程内，在获得响应后返回结果。

代码如下:

public class ThreadExecuteHttpRequest {

HttpUriRequest httpRequest = null;

HttpResponse httpResponse = null;

boolean waitResponse=true;

int MAXTRYCOUNT=50;

        public ThreadExecuteHttpRequest(HttpUriRequest httpRequest)

{

this.httpRequest=httpRequest;

}

public HttpResponse Execute()

{

new Thread()

{

@Override

public void run()

{

DefaultHttpClient client = new DefaultHttpClient();

try {

httpResponse = client.execute(httpRequest);

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch(Exception e){

e.printStackTrace();

   }

waitResponse=false;

}

}.start();

int count=0;

while(waitResponse&&count++

{

try {

Thread.sleep(100);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

return httpResponse;

}

}

在主线程中改成

HttpResponse httpResponse = new ThreadExecuteHttpRequest(httpRequest).Execute();

其他代码就不用动了。