Timer Task中的run（）方法未执行 - Android

Question

InputStream和OutputStream声明：

public OutputStream out = null; 
public InputStream inputStr = null;

启动TimerTask的onCreate（）代码：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
Log.e(LOG_TAG, "Start Repeat Timer");
    TimerTask task = new RepeatingTask();
    Timer timer = new Timer();
    timer.scheduleAtFixedRate(task, 0, 3000);
    Log.e(LOG_TAG, "Started Repeat Timer");
    out = socket.getOutputStream();
    inputStr = socket.getInputStream();
}

计时器任务代码：

public class RepeatingTask extends TimerTask {
     //private int len = 0; 
     //private byte[] input = new byte[len];

     public RepeatingTask() {
            Log.e(LOG_TAG, "In RepeatingTask()");
            Log.e(LOG_TAG, "Before inputJSON String");

            String hello = "hello world";
            //String inputJSON = getStringFromBuffer(new InputStreamReader(socket.getInputStream()));
            try {
                inputJSON = ConvertByteArrayToString(readBytes(inputStr));
                sendBytes(ConvertStringToByteArray(inputJSON), 0, ConvertStringToByteArray(inputJSON).length);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            //Convert 
            Log.e(LOG_TAG, "After inputJSON String:" + inputJSON); 


         //LOOK HERE FIRST  
         //inputJSON is what is received back from the server - Take the inputJSON 
         //String and use regular expressions HERE to remove all the other characters in the 
         //string except the payload JSON.
         //refreshViewModels(inputJSON);
     }

     @Override
     public void run() { 
          /*try {
              Log.e(LOG_TAG, "IN REPEATINGTHREAD-INPUTJSON");
              //outputstrwr.write(outputJSONserv);  //UNCOMMENT IF NEED TO SEND DATA TO GET JSON BACK
              //inputJSON = ConvertByteArrayToString(getBytesFromInputStream(inputStr));
              inputJSON = ConvertByteArrayToString(getFileBytes(inputStr));
          } catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }

          Log.e(LOG_TAG, "IN REPEATINGTHREAD-INPUTJSON2:" + inputJSON);
          refreshViewModels(inputJSON);*/

      try {
          Log.e(LOG_TAG, "IN REPEATINGTHREAD-INPUTJSON");
          //outputstrwr.write(outputJSONserv);  //UNCOMMENT IF NEED TO SEND DATA TO GET JSON BACK
          //byte[] = myByteArray = readBytes(inputStr);
          sendBytes(ConvertStringToByteArray(outputJSONserv), 0, ConvertStringToByteArray(outputJSONserv).length);
          //sendBytes(myByteArray, 0, myByteArray.length);
          Log.e(LOG_TAG, "AFTER SENDING DATA");
          //inputJSON = ConvertByteArrayToString(getBytesFromInputStream(inputStr));
              inputJSON = ConvertByteArrayToString(readBytes(inputStr));
              Log.e(LOG_TAG, "IN REPEATINGTHREAD-INPUTJSON2:" + inputJSON);
      } 
      catch (IOException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
      }

      Log.e(LOG_TAG, "IN REPEATINGTHREAD-INPUTJSON3:" + inputJSON);
      refreshViewModels(inputJSON); 
     }
}

inputStr是一个InputStream，用于读取字节并将其转换为字符串。

ConvertByteArrayToString（）只是将Byte数组转换为String＆amp; ConvertStringToByteArray（）将String转换为Byte []，以便可以使用sendBytes（byte []，int，int）发送数据。

我正在试图弄清楚为什么我的代码卡在这个try / catch语句中而没有抛出任何异常：

            try {
                inputJSON = ConvertByteArrayToString(readBytes(inputStr));
                sendBytes(ConvertStringToByteArray(inputJSON), 0, ConvertStringToByteArray(inputJSON).length);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

这是我的sendBytes（）方法：

public void sendBytes(byte[] myByteArray, int start, int len) throws IOException {
    if (len < 0)
        throw new IllegalArgumentException("Negative length not allowed");
    if (start < 0 || start >= myByteArray.length)
        throw new IndexOutOfBoundsException("Out of bounds: " + start);
    // Other checks if needed.

    // May be better to save the streams in the support class;
    // just like the socket variable.
    OutputStream out = socket.getOutputStream(); 
    DataOutputStream dos = new DataOutputStream(out);

    dos.writeInt(len);
    if (len > 0) {
        dos.write(myByteArray, start, len);
    }
}

这是我的readBytes（）方法：

public byte[] readBytes(InputStream in) throws IOException {
    // Again, probably better to store these objects references in the support class
    in = socket.getInputStream();
    DataInputStream dis = new DataInputStream(in);

    int len = dis.readInt();
    byte[] data = new byte[len];
    if (len > 0) {
        dis.readFully(data);
    }
    return data;
}

以下是ConvertByteArrayToString（）和ConvertStringToByteArray（）方法的代码：

public String ConvertByteArrayToString(byte[] b) { 
    // byte[] to string
    String input = new String(b);
    return input;
}

public byte[] ConvertStringToByteArray(String str) { 
    // string to byte[]
    byte[] bytes = str.getBytes();
    return bytes;
}

这是我看到的logcat输出：

 E/AndroidClient(17109): Start Repeat Timer
 E/AndroidClient(17109): Before inputJSON String
 D/WindowManager(  110): Home Key Test: false :false

任何有关正确方向的帮助或指示都将受到赞赏。