自学笔记：计时器Chronometer

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public class MainActivity extends Activity implements OnClickListener {     /**      * 待完善      */            private Chronometer chronometer = null;     private long temp;     private boolean isrestart;     @Override     protected void onCreate(Bundle savedInstanceState)     {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);                     chronometer  = (Chronometer) findViewById(R.id.chronometer1);         findViewById(R.id.button1).setOnClickListener(this);         findViewById(R.id.button2).setOnClickListener(this);         findViewById(R.id.button3).setOnClickListener(this);         findViewById(R.id.button4).setOnClickListener(this);         findViewById(R.id.button5).setOnClickListener(this);     }             @Override     public boolean onCreateOptionsMenu(Menu menu)     {         getMenuInflater().inflate(R.menu.main, menu);         return true;     }     @Override     public void onClick(View v)     {         switch (v.getId())         {             case R.id.button1:                 btnStartClock();                 break;             case R.id.button2:                 btnStopClock();                 break;             case R.id.button3:                 btnResetClock();                 break;             case R.id.button4:                 btnSetformat();                 break;             case R.id.button5:                 btnClearformat();                 break;             default:                 break;         }     }     private void btnClearformat()//清除格式     {         chronometer.setFormat(null);     }     private void btnSetformat()//设置格式     {         chronometer.setFormat("计时：%s");  //设置计时格式，第一个%s将被hh:mm:ss或者mm:ss代替     }     private void btnResetClock()//重置时间     {         isrestart = true;         chronometer.setBase(SystemClock.elapsedRealtime());//设置计时基准时间         Log.e("setBase", SystemClock.elapsedRealtime()+"");     }     private void btnStopClock()//停止计时     {         chronometer.stop();                     //记住停止时间         temp = Long.parseLong(chronometer.getText().toString().split(":")[1]) * 1000 +                 Long.parseLong(chronometer.getText().toString().split(":")[0]) * 60000;         //chronometer.getBase();         Log.e("getBase", chronometer.getBase()+"");         Log.e("getBase", temp+"");     }     private void btnStartClock()//开始计时     {         chronometer.setBase(SystemClock.elapsedRealtime()-temp);//从上次停止时间开始计时         chronometer.start();         Log.e("getBase", chronometer.getBase()+"");     }         }

本文转自 glblong 51CTO博客，原文链接：http://blog.51cto.com/glblong/1206325，如需转载请自行联系原作者