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我一直在研究一個程序，它通過套接字連接發送和接收一個字符串到服務器。我用Asynctask打開連接併發送適當的命令，但不管什麼都沒有發生！我知道發送到服務器的命令是絕對正確的，服務器信息是正確的，所以我很難過！Android Asynctask套接字連接
這裏是我的Java代碼
new internetRoutesRetrieve().execute("");
private class internetRoutesRetrieve extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... parms) {
String userNameSend = userName;
String response = null;
try {
Socket client = new Socket("Hidden", Hidden);
DataOutputStream out = new DataOutputStream(client.getOutputStream());
DataInputStream in = new DataInputStream(client.getInputStream());
String command = "SEARCH " + userNameSend;
out.writeUTF(command);
out.flush();
String responseServer = in.readUTF();
out.close();
in.close();
response = responseServer;
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
@Override
protected void onPostExecute(String result) {
//This is always null!
System.out.println(result);
responseIds = result;
}
@Override
protected void onPreExecute() {
}
@Override
protected void onProgressUpdate(Void... values) {
}
}
}
我logcat的，如果有幫助
12-09 02:58:52.925: W/System.err(17598): java.io.EOFException
12-09 02:58:53.056: W/System.err(17598): at libcore.io.Streams.readFully(Streams.java:83)
12-09 02:58:53.056: W/System.err(17598): at java.io.DataInputStream.readFully(DataInputStream.java:120)
12-09 02:58:53.066: W/System.err(17598): at java.io.DataInputStream.decodeUTF(DataInputStream.java:195)
12-09 02:58:53.066: W/System.err(17598): at java.io.DataInputStream.decodeUTF(DataInputStream.java:190)
12-09 02:58:53.066: W/System.err(17598): at java.io.DataInputStream.readUTF(DataInputStream.java:186)
12-09 02:58:53.066: W/System.err(17598): at com.example.app.RouteSelection$internetRoutesRetrieve.doInBackground(RouteSelection.java:145)
12-09 02:58:53.066: W/System.err(17598): at com.example.app.RouteSelection$internetRoutesRetrieve.doInBackground(RouteSelection.java:1)
12-09 02:58:53.066: W/System.err(17598): at android.os.AsyncTask$2.call(AsyncTask.java:287)
12-09 02:58:53.066: W/System.err(17598): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-09 02:58:53.066: W/System.err(17598): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-09 02:58:53.066: W/System.err(17598): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-09 02:58:53.066: W/System.err(17598): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-09 02:58:53.066: W/System.err(17598): at java.lang.Thread.run(Thread.java:856)
感謝所有幫助:)