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bt = (Button)super.findViewById(R.id.bt);

tv = (TextView)super.findViewById(R.id.textView1);

Dc dc = Dc.getInstance();

if(dc.tt==1){

dc.tt=0;

Timer timer = new Timer();

Task task = new Task();

timer.schedule(task, 1000, 5000);

}

bt.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Intent intent = new Intent();

intent.setClass(MainActivity.this, A2.class);

startActivity(intent);

}

});

handler = new Handler(){

public void handleMessage (Message msg) {

switch(msg.what) {

case 7:

tv.setText("刷新于："+getTime());//+getTime());

tv.setGravity(Gravity.CENTER);

System.out.println("57--"+"刷新时间:"+getTime());

break;

}

}

};

}

class Task extends TimerTask

{

@Override

public void run() {

handler.obtainMessage(7).sendToTarget();//更新界面的刷新时间

}

}