[英]android.os.NetworkOnMainThreadException Inside new thread
[英]android.os.NetworkOnMainThreadException how to adapt this code that it runs in a seperate thread
我正在开发一种软件,其中PC和移动设备与服务器通信。 当我从JAVA桌面应用程序运行代码时,它给了我以下错误android.os.NetworkOnMainThreadException
我试图将我的课程实现为线程,但我认为我做得不好。 它仍然给我错误
我会很高兴得到任何支持。
ServerAccessMobile类负责所有的联网工作,并具有两个公共方法,一个用于从服务器获取数据,另一个用于在服务器上设置数据。
这就是我想从任何活动/服务中执行它的方式
ServerAccessMobile serverAccessMobile = new ServerAccessMobile();
ArrayList <String> dataFromServer = **serverAccessMobile.getDataFromServer()**;
ArrayList <String> dataToSend = .....
**serverAccessMobile.setDataOServer(dataToSend)**;
这是类ServerAccessMobile的代码
public class ServerAccessMobile {
// private variables
private ObjectOutputStream outputStream;
private ObjectInputStream inputStream;
...
// constructor
public ServerAccessMobile(String arg1)
{
...
}
**private ArrayList<String> run(ArrayList<String> messageToSendList)**
{
ArrayList <String> receivedMessageList = new ArrayList <String> ();
try // connect to server, get streams, process connection
{
connectToServer(); // create a Socket to make connection
getStreams(); // get the input and output streams
sendData(messageToSendList);
receivedMessageList = processConnection();
}
catch ( EOFException eofException )
{
System.out.println("\n terminated connection");
}
catch ( IOException ioException )
{
ioException.printStackTrace();
}
finally
{
closeConnection(); // close connection
}
return receivedMessageList;
}
public ArrayList <String > getDataFromServer(){
ArrayList< String > commandMessage = new ArrayList< String > ();
commandMessage.add("GETDATA");
ArrayList< String > receivedMessageList = new ArrayList< String > ();
// start server communication
receivedMessageList = **run(commandMessage);**
}
public void setDataOnServer(ArrayList <String> messageToSendList){
// start server communication
**run(messageToSendList);**
}
}
现在我的问题是
run()方法中的代码应在单独的线程中运行,而不是在ui线程中如何正确执行?
感谢你
您可以在以下链接中找到有关线程的详细说明: http : //developer.android.com/guide/components/processes-and-threads.html#Threads
你可以做这样的事情
new Thread(new Runnable() {
public void run() {
ServerAccessMobile serverAccessMobile = new ServerAccessMobile();
ArrayList <String> dataFromServer = **serverAccessMobile.getDataFromServer()**;
ArrayList <String> dataToSend = .....
serverAccessMobile.setDataOServer(dataToSend);
}
}).start();
如果要从此线程更新UI,则必须调用view.post(Runnable)方法。
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