求教关于timer的问题
package Y.B;import java.util.ArrayList;import java.util.List;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TextView;public class stopwatchActivity extends Activity implements OnClickListener { RadioGroup rg; RadioButton rbfenbei, rbyiquan; ListView lvjilu; TextView tvxianshi; Button btnjishi, btnkaishi; Timer timer = new Timer(); TimerTask task = new TimerTask() { @Override public void run() { try { Message msg = handler.obtainMessage(); msg.what = 0; run[3]++; if(run[3] == 100) { run[3] = 0; run[2]++; } if(run[2] == 60) { run[2] = 0; run[1]++; } if(run[1] == 60) { run[1] = 0; run[0]++; } Thread.sleep(10); msg.obj = run[3]; msg.sendToTarget(); } catch(Exception e) { e.printStackTrace(); } } }; List<String> jilu = new ArrayList<String>(); ArrayAdapter<String> jilus; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch(msg.what) { case 0:// 显示时间 tvxianshi.setText((run[0] < 10 ? "0" + run[0] : run[0]) + ":" + (run[1] < 10 ? "0" + run[1] : run[1]) + ":" + (run[2] < 10 ? "0" + run[2] : run[2]) + ":" + (run[3] < 10 ? "0" + run[3] : run[3])); break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.stopwatch); rg = (RadioGroup) findViewById(R.id.rg); rbfenbei = (RadioButton) findViewById(R.id.rbfenbie); rbyiquan = (RadioButton) findViewById(R.id.rbyiquan); lvjilu = (ListView) findViewById(R.id.lvjilu); tvxianshi = (TextView) findViewById(R.id.tvxianshi); btnjishi = (Button) findViewById(R.id.btnjishi); btnkaishi = (Button) findViewById(R.id.btnkaishi); btnkaishi.setOnClickListener(this); btnjishi.setOnClickListener(this); jilus = new ArrayAdapter<String>(stopwatchActivity.this, android.R.layout.simple_list_item_1, jilu); lvjilu.setAdapter(jilus); } boolean isRun = false;// 是否在计时 int[] run = { 0, 0, 0, 0 };// 表示时间的时、分、秒、毫秒 @Override public void onClick(View v) { switch(v.getId()) { case R.id.btnkaishi: if(!isRun) { timer.schedule(task, 10, 10); isRun = true; }else{} break; case R.id.btnjishi: int[] one = run.clone(); String myjilu = (one[0] < 10 ? "0" + one[0] : one[0]) + ":" + (one[1] < 10 ? "0" + one[1] : one[1]) + ":" + (one[2] < 10 ? "0" + one[2] : one[2]) + ":" + (one[3] < 10 ? "0" + one[3] : one[3]); jilu.add(myjilu); jilus.notifyDataSetChanged(); break; } }}
private boolean stoped;private long start;private long end;private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { refresh(); }};private Thread thread;public void start() { start = System.currentTimeMillis(); stoped = false; (thread = new Thread() { @Override public void run() { while (true) { handler.sendEmptyMessage(0); try { sleep(10); } catch (InterruptedException e) { break; } } } }).start();}public void stop() { if (thread != null) { end = System.currentTimeMillis(); stoped = true; thread.interrupt(); thread = null; }}public void refresh() { long time; if(stoped) { time = end - start; } else { time = System.currentTimeMillis() - start; } // //将毫秒时间 time 转为合适的格式，显示到界面上 //}