Handler的使用疑问解决办法

        1，private void GetSharedPreferences() {            
               SharedPreferences settings = getSharedPreferences(SETTING_Infos, 0);
               mBootNum=settings.getInt(BootNum,1);
               mSleepTime=settings.getInt(SleepTime,1);
mSleepTime是能获取到值得。
         2，private String getCountdownString(){
        int hour=00;
        int minute=00;
        int second = mSleepTime;
        return String.format("%02d:%02d:%02d", hour, minute, second);
       }
           msleepTime 获取不到值。（应该获取到的是和GetSharedPreferences() 中mSleepTime的值相等才正确。）

package wistron.mojo.boot;

import java.util.Timer;
import java.util.TimerTask;

import wistron.mojo.R;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Typeface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

/*
 * After the countdowntime has expired,start detectedd device,at the same time display the progress.
 * and update data to SETTING_Infos.xml file.
 */
public class UpdateProgress extends Activity implements OnClickListener{
    public static final String SETTING_Infos = "SETTING_Infos";
    public static final String BootNum = "BootNum";
    public static final String SleepTime = "SleepTime";
    public static final String mPowerType="coldboot";
    public static final String Successful_time="0";
    private final static int TRACK_TEXTVIEW = 0;
    private final static int TRACK_PROGRESSBAR = 1;    
    
    public int mSleepTime,mBootNum,mSuccessful_time;
    public int mSuccessfulBoot,mPowerCycleType;    
    
    public Button mPauseButton,mCancelButton;    
    public EditText mSuccessfulBootEdit,mCountdownSleepEdit;
    public TextView SleepTimeTV,BootNumTV,CountDownTV;
    public TextView tv;
    public ProgressBar mProgressusb,mProgressssd,pb;
    public Timer timer;
    Thread mThread;
    
    public boolean isRunning = false;
    boolean pauseText=true;
    
    private final int[][] mTrackSlotResource = {
            {R.id.txviewssd, R.id.progressssd},
            {R.id.txviewusb, R.id.progressusb},
    };    
        
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.progress);    
        InitialUI();
    }
    /*
     * Initial UI:
     * Read from sharedPreference -- @GetSharedPreferences(); 
     * Sleep -- @CountDownTime();        
     * @InitialProgress();    
     */
    private void InitialUI() {
        findView();
        SetListener();
        GetSharedPreferences();    
        CountDownTime();
    }    

    private void findView() {
        mPauseButton = (Button) findViewById(R.id.Pause);
        mCancelButton = (Button) findViewById(R.id.Cancel);    
        BootNumTV=(TextView)findViewById(R.id.BoottimesTV);
        CountDownTV = (TextView) findViewById(R.id.CountdownTimeTV);
    }
    private void SetListener() {
        mPauseButton.setOnClickListener(this);
        mCancelButton.setOnClickListener(this);
    }
    
    private void GetSharedPreferences() {            
        SharedPreferences settings = getSharedPreferences(SETTING_Infos, 0);
        mBootNum=settings.getInt(BootNum,1);
        mSleepTime=settings.getInt(SleepTime,1);
        mSuccessful_time=settings.getInt(Successful_time, 0);
        BootNumTV.setText("BootNum is"+String.valueOf(mBootNum));
    }
    
    /*
     * Button listener action:@hRunBootTestListener(View button)
     * suspend and resume detected device action by button text value.
     */
    private void hRunBootTestListener(View button) {
        switch(button.getId()){
        case R.id.Pause:{
            if(pauseText){
                mPauseButton.setText("Start");
                pauseText=false;
            }else if(!pauseText){
                mPauseButton.setText("Pause");
                pauseText=true;
            }    
        }break;
        case R.id.Cancel:{
            Log.i("Cancel button is clicked","cancle button");
        }break;
        }        
    }    
        
    /*
     * @handler:Receives a different message value through handling of incidents
     * @CountDownTime() message.what=1
     * @InitialProgress() message.what=2 
     */
    final Handler handler = new Handler(){  
         public void handleMessage(Message msg) {  
            switch (msg.what) { 
            case 1:               
                 CountDownTV.setText(getCountdownString());    
                 break;
             case 2:
                    for(int m=0;m<2;m++){
                        tv = (TextView) findViewById(mTrackSlotResource[m][TRACK_TEXTVIEW]);
                        pb = (ProgressBar) findViewById(mTrackSlotResource[m][TRACK_PROGRESSBAR]); 
                    
                        int progress=pb.getProgress();                
                        if(progress==pb.getMax()){
                            tv.setText("Checking is completed ");
                        }else if(progress>(3*(pb.getMax())/4)){
                            tv.setText("Checking completed 3/4..... ");
                        }else if(progress>(2*(pb.getMax())/4)){
                            tv.setText("Checking usb completed 2/4..... "); 
                        }else if(progress>((pb.getMax())/4)){
                            tv.setText("Checking completed 1/4..... ");
                        }else{
                            tv.setText("Checking is going..... "); 
                        }    
                        pb.incrementProgressBy(5);
                    }        
                    break;
                 } 
             super.handleMessage(msg); 
         } 
    };
    /*
     * @InitialProgress()
     * Initial Progressbar and sleep 1s every time
     */
    private void InitialProgress() { 
        mThread = new Thread(new Runnable() {
            @Override
            public void run() {
                Message message = new Message();      
                message.what = 2;
                for(int i=0;i<30&& isRunning;i++){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                    }      
                }
            }  
        });   
    }
    
    /*
     * @CountDownTime() : CountDownTime and display on UpdateProgress UI
     * This class includ Three method: 
     * @CountDownTime()
     * TimerTask task 
     * @getCountdownString():format string
     */
    private void CountDownTime() {
        Typeface font = Typeface.createFromAsset(this.getAssets(),
                "fonts/digital-7 (mono).ttf");
        CountDownTV.setTypeface(font);            
        timer = new Timer("minutes-to-midnight");        
        timer.schedule(task,1000, 1000); //delay 1000ms excute，anmout of 1000ms in between subsequent executions
        /*
         * Display message "Start detected device" of toast
         */
        Context context = getApplicationContext();
        CharSequence text = "After"+mSleepTime+"s"+"Start detected device";
        int duration = Toast.LENGTH_SHORT;     
        Toast toast = Toast.makeText(context, text, duration);
        toast.show();                       
    }    
    TimerTask task = new TimerTask(){      
        public void run() {  
            Message message = new Message();      
            message.what = 1;
            for(;mSleepTime>0;mSleepTime--){
                handler.sendMessage(handler.obtainMessage(1));    
            }
            if(mSleepTime==0){
                handler.sendMessage(handler.obtainMessage(2));    
                isRunning = true;   
                mThread.start();    
            }
        }  
    }; 
    private String getCountdownString(){
        int hour=00;
        int minute=00;
        int second = mSleepTime;
        return String.format("%02d:%02d:%02d", hour, minute, second);
        }
    
    @Override
    public void onClick(View button) {
        hRunBootTestListener(button);        
    }    
}