应用程序在此活动中挂起？

Question

 public class JobStartedScreen extends Activity  implements OnMessageReceived{

TextView tv_JobNo;
static TextView tv_JobKm;
static TextView tv_speed;
static TextView tv_JobwaitngTime;
TextView tvjobstartedtime;
Button btn_jobFinsh;
Button btn_msg;
ImageButton navig;
boolean _ThreadFlag=false;
boolean _ResumeThread=false;
private Window w;
Thread t=null;
String jobno;
String tag="Jobstartscreen";
private static MyThread sThread;
static TextView tv_Fare;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
     requestWindowFeature(Window.FEATURE_NO_TITLE);
     setContentView(R.layout.jobstartedscreen);
    if (savedInstanceState==null){
        Contsants.VehicleStartOdometer=0.0F;
        sThread=new MyThread(mHandler);
        sThread.start();
    }
    tcpSocket.setmMessageListener(this);
    tv_JobNo =(TextView)findViewById(R.id.tvJobid);
    Bundle bundle = getIntent().getExtras();
    jobno= bundle.get("Jobno").toString();
    tv_JobNo.setText(jobno);

    tv_JobKm =(TextView)findViewById(R.id.tvjobKm);
    tv_JobwaitngTime =(TextView)findViewById(R.id.tvjobWaittime);
    tv_speed=(TextView)findViewById(R.id.speed);
    tv_Fare=(TextView)findViewById(R.id.tv_fare);

    tv_JobwaitngTime.setText("Waiting Time : 0:0");
    //update the Km every 1 sec
    Log.d(tag, "On created "+_ResumeThread);
    tvjobstartedtime=(TextView)findViewById(R.id.tv_jobStarttime);
    tvjobstartedtime.setText("Start Time :"+Contsants.jobStartTime);

    btn_jobFinsh= (Button)findViewById(R.id.btn_jobFinsh);
    btn_jobFinsh.setOnClickListener(onClickListener);

    btn_msg= (Button)findViewById(R.id.btn_msg);
    btn_msg.setOnClickListener(onClickListener);


    StateManager.DeviceStatus=StateManager.hired;


    // TODO Auto-generated method stub
}
@Override
public void onStart()
{
    super.onStart();

}
@Override
public void onResume()
{
    super.onResume();
    w = this.getWindow();
    w.addFlags(LayoutParams.FLAG_DISMISS_KEYGUARD);
    w.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
    w.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);
    Log.d("job start on resume",_ThreadFlag+" "+_ResumeThread);
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState){
    super.onRestoreInstanceState(savedInstanceState);
    if (sThread.isAlive()){
        sThread.setHandler(mHandler);
    }
}

@Override
protected void onDestroy(){
    super.onDestroy();
    if (sThread.isAlive()){
        sThread.setHandler(null);
    }
    sThread.setHandler(null);
}

boolean _Paused=false;
@Override
public void onPause()
{
    super.onPause();
    _Paused=true;
}
@Override
public void onBackPressed() {
    // do nothing.
}

private OnClickListener onClickListener = new OnClickListener() {
    @Override
    public void onClick(final View v) {
        switch(v.getId()){
        case R.id.btn_jobFinsh:
            //DO something
            _ThreadFlag=true;
            StateManager.JobStatus=StateManager.jobstatus_dropped;
            tcpSocket.SendMessage(FramePacket.FrameJobStatusCmd(Contsants.Jobno,StateManager.JobStatus));
             SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yy HH:mm");
             String currentDateandTime = sdf.format(new Date());
             Contsants.jobEndTime=currentDateandTime;
             Contsants.jobEndKm =gpsdataElements.Distance;
            Intent i = new Intent(getApplicationContext(),JobCompletionScreen.class);
            startActivity(i);
            sThread.setHandler(null);
            finish();
            break;
        case R.id.btn_msg:

            Intent imsg = new Intent(getApplicationContext(),MessageList.class);
            startActivity(imsg);
            break;


        }
    }
};

static Handler mHandler =new Handler(){
    @Override
    public void handleMessage(Message message){
        //update UI
        Bundle b = message.getData();
        float odometer = b.getFloat("My Odometer");
        String Fare = b.getString("Fare");
        int waiting =b.getInt("waiting Time");
        double speedVal= b.getDouble("SpeedValue");
        tv_speed.setText(String.format("%.2f",speedVal)+" Km/hr");
        tv_JobKm.setText(String.format("%.2f",odometer)+" Km");
        tv_Fare.setText(Fare);  
        tv_JobwaitngTime.setText(Integer.toString((waiting / 60)) +":"+ Integer.toString((waiting% 60)));
        Contsants.jobTotalwaitingTime=Integer.toString((waiting / 60)) +":"+ Integer.toString((waiting% 60));
    }
};

private class MyThread extends Thread{
    private Handler mHandler;

    public MyThread(Handler handler){
        super();
        mHandler=handler;
    }

    @Override
    public void run(){
        //some long operation
        if (mHandler!=null)
            mHandler.sendEmptyMessage(0);

        _ResumeThread=true;
        while(!_ThreadFlag)
        {
            try {
                Thread.sleep(1000);   
                Message msg = new Message();
                Bundle b = new Bundle();
                b.putFloat("My Odometer", (float) (gpsdataElements.Distance-Contsants.jobStartKm));
                if(gpsdataElements.Speed<1)
                {
                    Contsants.cont_WaitingTimeInSec++;
                }
                float totalKm =  Contsants.jobEndKm-Contsants.jobStartKm ;

                if (totalKm<Contsants.minDist)
                {
                    float totalfare=Contsants.minFare;
                    b.putString("Fare", String.format("%.2f",(totalfare)));
                }
                else
                {
                    float totalfare= Contsants.minFare+ ((totalKm-Contsants.minDist) *Contsants.rupeeKm)  +(Contsants.cont_WaitingTimeInSec/60)*1;
                    b.putString("Fare", String.format("%.2f",(totalfare)));
                }

                b.putInt("waiting Time",  Contsants.cont_WaitingTimeInSec);
                b.putDouble("SpeedValue", gpsdataElements.Speed*1.852);
                //  tv_JobwaitngTime.setText("Waiting Time : "+Integer.toString((Contsants.cont_WaitingTimeInSec / 60)) +":"+ Integer.toString((Contsants.cont_WaitingTimeInSec % 60)));
                //send message to the handler with the current message handler          
                msg.setData(b);
                // send message to the handler with the current message handler
                mHandler.sendMessage(msg);

            } catch (Exception e) {
                Log.v("Error", e.toString());
            }
        }
    }

    public void setHandler(Handler handler){
        mHandler=handler;
    }
}

@Override
public void messageReceived(String message) {
    // TODO Auto-generated method stub
    //Toast.makeText(getApplicationContext(), "Job StartScreem : Recived data :"+message, Toast.LENGTH_LONG).show();        
}

 }

此活动在移动状态下挂起。我试图测试这个应用程序。但在此JobstartedScreen活动期间，它会在某个时间挂起，并向我显示错误排除或等待消息。如果我点击等待选项意味着它的值突然改变了。我不知道为什么会出现这个错误。我认为这是由于其他条件部分计算。但我绝对不知道。如果有人知道帮助我们。