android中实现时分秒显示

Chronometer m1=(Chronometer)this.findViewById(R.id.chronometer1);
//        m1.setFormat("计时信息：%s");
m1.start();
m1.setOnChronometerTickListener(new OnChronometerTickListener() {
int miss = 0;

@Override
public void onChronometerTick(Chronometer ch) {
miss++;
ch.setText(FormatMiss(miss));
}
});

    String FormatMiss(int miss2){       
        String hh=miss2/3600>9?miss2/3600+"":"0"+miss2/3600;  
        String mm=(miss2 % 3600)/60>9?(miss2 % 3600)/60+"":"0"+(miss2 % 3600)/60;  
        String ss=(miss2 % 3600) % 60>9?(miss2 % 3600) % 60+"":"0"+(miss2 % 3600) % 60;  
        return hh+":"+mm+":"+ss;        
    }