Android多功能时钟开发案例（实战篇）

2019-12-12 06:17:54

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上一篇为大家介绍的是Android多功能时钟开发基础内容，大家可以回顾一下，Android多功能时钟开发案例（基础篇）

接下来进入实战，快点来学习吧。

一、时钟
在布局文件中我们看到，界面上只有一个TextView，这个TextView的作用就是显示一个系统的当前时间，同时这个时间还是一秒一秒跳的，要实现一秒一秒的跳就需要我们每隔一秒就要刷新一下，同时我们这里还考虑了切换到另一个Tab的时候，这个时间就不跳动了，这样就会减少这个对系统的占用，考虑到了这点我们在这里用到了Handler，通过handler发送的msg.what 来判断是否要刷新时间。

public class TimeView extends LinearLayout {   private TextView tvTime;  public TimeView(Context context) {   super(context);  }   public TimeView(Context context, AttributeSet attrs) {   super(context, attrs);  }   public TimeView(Context context, AttributeSet attrs, int defStyle) {   super(context, attrs, defStyle);  }   @Override  protected void onFinishInflate() {   super.onFinishInflate();   tvTime = (TextView) findViewById(R.id.tvTime);   //tvTime.setText("hello");      timeHandler.sendEmptyMessage(0);  }    @Override  protected void onVisibilityChanged(View changedView, int visibility) {   super.onVisibilityChanged(changedView, visibility);   //当再次切换到这个Tab时我们就再发送一次这个消息，否者就把所有的消息移除掉   if (visibility == View.VISIBLE) {    timeHandler.sendEmptyMessage(0);      }else{    timeHandler.removeMessages(0);   }  }    private void refreshTime(){   //获取当前的时间   Calendar c = Calendar.getInstance();      tvTime.setText(String.format("%d:%d:%d", c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE),c.get(Calendar.SECOND)));  }  private Handler timeHandler = new Handler(){   public void handleMessage(android.os.Message msg) {    refreshTime();        //处于当前Tab的时候给自己发送信息，可以刷新    if (getVisibility() == View.VISIBLE) {        //1秒钟后再次执行以下sendEmptyMessage，what参数用于区分不同的message     timeHandler.sendEmptyMessageDelayed(0, 1000);    }   };  }; }

其实这里的Handler可以用Timer来完成亦可以达到同样的效果。
在这里要提一下的是onFinishInflate()，这在我们自定义布局的时候一定要用到的，解释以及例子在之后上传的知识点中同样有，看看那个就可以了。
二、闹钟
从第二个布局中我们可以看到，我们在这里用到了一个ListView，这是用来存储我们添加的闹钟的，既然这里用到了ListView，那么我们接着就会想到要给这个ListView一个适配器adapter，因此我们会在这里创建这么一个适配器，
private ArrayAdapter<AlarmData> adapter;
看到这里可能又会有疑问了，AlarmData这是个什么东西？有这么一个数据类型吗？？其实这里我们自定义了一个数据类型，用来专门存储一下创建的闹钟时间。我们来看一下自定义的数据类型代码吧！

// 自定义数据类型  private static class AlarmData {   private long time = 0;   private Calendar date;   private String timeLabel = "";    public AlarmData(long time) {    this.time = time;    date = Calendar.getInstance();    date.setTimeInMillis(time);    timeLabel = String.format("%d月%d日 %d:%d",      date.get(Calendar.MONTH) + 1,      date.get(Calendar.DAY_OF_MONTH),      date.get(Calendar.HOUR_OF_DAY), date.get(Calendar.MINUTE));   }    public long getTime() {    return time;   }    public String getTimeLabel() {    return timeLabel;   }    public int getId() {    return (int) (getTime() / 1000 / 60);   }    @Override   public String toString() {    return getTimeLabel();   }   }

这个数据类型的代码其实还是很容易明白的，不多讲了。
当我们到这里的时候，我们其实还没有真正的完成，假如我们的代码已经写好了，并且可以运行了我们运行一次后，并且添加了N个闹钟，当我们退出程序，再次打开就会发现，我们之前创建的闹钟都没了，原因是我们虽然把数据临时的保存在了ListView中，但是我们并没有长时间的保存，因此我们接着就来讲讲长久的保存这些闹钟数据。

private void saveAlarmList() {   Editor editor = getContext().getSharedPreferences(     AlarmView.class.getName(), Context.MODE_PRIVATE).edit();    StringBuffer sb = new StringBuffer();    for (int i = 0; i < adapter.getCount(); i++) {    sb.append(adapter.getItem(i).getTime()).append(",");   }   if (sb.length() > 1) {    String content = sb.toString().substring(0, sb.length() - 1);    editor.putString(KEY_ALARM_LIST, content);     System.out.println(content);   } else {    editor.putString(KEY_ALARM_LIST, null);   }   editor.commit();  }

有了保存，我们当然的会想到读取

private void readSaveAlarmList() {   SharedPreferences sp = getContext().getSharedPreferences(     AlarmView.class.getName(), Context.MODE_PRIVATE);   String content = sp.getString(KEY_ALARM_LIST, null);    if (content != null) {    String[] timeStrings = content.split(",");    for (String string : timeStrings) {     adapter.add(new AlarmData(Long.parseLong(string)));    }   }  }

上面的一些陌生的类型在之后的知识点中可以查看。

接着我们来看看最关键的就是添加闹钟

private void addAlarm() {    Calendar c = Calendar.getInstance();    new TPDiolog(getContext(), new TimePickerDialog.OnTimeSetListener() {     @Override    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {      Calendar calendar = Calendar.getInstance();     calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);     calendar.set(Calendar.MINUTE, minute);     calendar.set(Calendar.SECOND, 0);     calendar.set(Calendar.MILLISECOND, 0);      Calendar currentTime = Calendar.getInstance();     if (currentTime.getTimeInMillis() >= calendar.getTimeInMillis()) {      calendar.setTimeInMillis(calendar.getTimeInMillis() + 24        * 60 * 60 * 1000);     }     AlarmData ad = new AlarmData(calendar.getTimeInMillis());     adapter.add(ad);     alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,       ad.getTime(), 5 * 60 * 1000, PendingIntent         .getBroadcast(getContext(), ad.getId(),           new Intent(getContext(),             AlarmReceiver.class), 0));     saveAlarmList();    }   }, c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE), true).show();  }

这里我们可以看到TPDiolog这个，当你自己尝试过后可能也会遇到同样的问题，那就是当你通过TimePickerDialog这个系统的时间选择控件的时候，点击确定后，会创建两条记录，这是因为我们点击确定后会调用该事件监听器的时间，在关闭这个Dialog的时候也会调用一次，所以我们在这里自己重写了一下该类的方法

TPDiolog.class

public class TPDiolog extends TimePickerDialog {   public TPDiolog(Context context, OnTimeSetListener callBack, int hourOfDay,    int minute, boolean is24HourView) {   super(context, callBack, hourOfDay, minute, is24HourView);  }   //重写该方法是为了避免调用两次onTimeSet  @Override  protected void onStop() {   //super.onStop();  } }

在之前的代码中我们还看到了一个alarmManager这一对象，这是我们为了调用系统的闹钟服务创建的实例，我们也因此而创建了一个AlarmReceiver.class

public class AlarmReceiver extends BroadcastReceiver {   @Override  public void onReceive(Context context, Intent arg1) {   System.out.println("闹钟执行了！");      AlarmManager am=(AlarmManager) context.getSystemService(Context.ALARM_SERVICE);   am.cancel(PendingIntent.getBroadcast(context, getResultCode(), new Intent(context, AlarmReceiver.class), 0));      Intent i =new Intent(context,PlayAlarmAty.class);   //设置intent的启动模式   i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);   context.startActivity(i);  }  }

一些小的地方讲好了，最后把AlarmView.class的完整代码贴上。

package com.example.clock;  import java.util.Calendar; import java.util.Date; import java.util.Iterator;  import android.app.AlarmManager; import android.app.AlertDialog; import android.app.PendingIntent; import android.app.TimePickerDialog; import android.app.TimePickerDialog.OnTimeSetListener; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.util.AttributeSet; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.Switch; import android.widget.TimePicker;  public class AlarmView extends LinearLayout {   private Button btnAddAlarm;  private ListView lvListAlarm;  private ArrayAdapter<AlarmData> adapter;  private AlarmManager alarmManager;   public AlarmView(Context context, AttributeSet attrs, int defStyle) {   super(context, attrs, defStyle);   init();  }   public AlarmView(Context context, AttributeSet attrs) {   super(context, attrs);   init();  }   public AlarmView(Context context) {   super(context);   init();  }   private void init() {   alarmManager = (AlarmManager) getContext().getSystemService(     Context.ALARM_SERVICE);  }   @Override  protected void onFinishInflate() {   super.onFinishInflate();   btnAddAlarm = (Button) findViewById(R.id.btnAddAlarm);   lvListAlarm = (ListView) findViewById(R.id.lvListAlarm);    adapter = new ArrayAdapter<AlarmData>(getContext(),     android.R.layout.simple_list_item_1);   lvListAlarm.setAdapter(adapter);    readSaveAlarmList();   // adapter.add(new AlarmData(System.currentTimeMillis()));    btnAddAlarm.setOnClickListener(new OnClickListener() {     @Override    public void onClick(View v) {     addAlarm();    }   });   // 长按某项删除   lvListAlarm.setOnItemLongClickListener(new OnItemLongClickListener() {     @Override    public boolean onItemLongClick(AdapterView<?> arg0, View arg1,      final int position, long arg3) {      new AlertDialog.Builder(getContext())       .setTitle("操作选项")       .setItems(new CharSequence[] { "删除", "删除1" },         new DialogInterface.OnClickListener() {           @Override          public void onClick(DialogInterface dialog,            int which) {           switch (which) {           case 0:            deleteAlarm(position);            break;            default:            break;           }          }         }).setNegativeButton("取消", null).show();     return true;    }   });  }   private void deleteAlarm(int position) {   AlarmData ad = adapter.getItem(position);   adapter.remove(ad);   saveAlarmList();    alarmManager.cancel(PendingIntent.getBroadcast(getContext(),     ad.getId(), new Intent(getContext(), AlarmReceiver.class), 0));  }   private void addAlarm() {    Calendar c = Calendar.getInstance();    new TPDiolog(getContext(), new TimePickerDialog.OnTimeSetListener() {     @Override    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {      Calendar calendar = Calendar.getInstance();     calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);     calendar.set(Calendar.MINUTE, minute);     calendar.set(Calendar.SECOND, 0);     calendar.set(Calendar.MILLISECOND, 0);      Calendar currentTime = Calendar.getInstance();     if (currentTime.getTimeInMillis() >= calendar.getTimeInMillis()) {      calendar.setTimeInMillis(calendar.getTimeInMillis() + 24        * 60 * 60 * 1000);     }     AlarmData ad = new AlarmData(calendar.getTimeInMillis());     adapter.add(ad);     alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,       ad.getTime(), 5 * 60 * 1000, PendingIntent         .getBroadcast(getContext(), ad.getId(),           new Intent(getContext(),             AlarmReceiver.class), 0));     saveAlarmList();    }   }, c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE), true).show();  }   private static final String KEY_ALARM_LIST = "alarmlist";   private void saveAlarmList() {   Editor editor = getContext().getSharedPreferences(     AlarmView.class.getName(), Context.MODE_PRIVATE).edit();    StringBuffer sb = new StringBuffer();    for (int i = 0; i < adapter.getCount(); i++) {    sb.append(adapter.getItem(i).getTime()).append(",");   }   if (sb.length() > 1) {    String content = sb.toString().substring(0, sb.length() - 1);    editor.putString(KEY_ALARM_LIST, content);     System.out.println(content);   } else {    editor.putString(KEY_ALARM_LIST, null);   }   editor.commit();  }   private void readSaveAlarmList() {   SharedPreferences sp = getContext().getSharedPreferences(     AlarmView.class.getName(), Context.MODE_PRIVATE);   String content = sp.getString(KEY_ALARM_LIST, null);    if (content != null) {    String[] timeStrings = content.split(",");    for (String string : timeStrings) {     adapter.add(new AlarmData(Long.parseLong(string)));    }   }  }   // 自定义数据类型  private static class AlarmData {   private long time = 0;   private Calendar date;   private String timeLabel = "";    public AlarmData(long time) {    this.time = time;    date = Calendar.getInstance();    date.setTimeInMillis(time);    timeLabel = String.format("%d月%d日 %d:%d",      date.get(Calendar.MONTH) + 1,      date.get(Calendar.DAY_OF_MONTH),      date.get(Calendar.HOUR_OF_DAY), date.get(Calendar.MINUTE));   }    public long getTime() {    return time;   }    public String getTimeLabel() {    return timeLabel;   }    public int getId() {    return (int) (getTime() / 1000 / 60);   }    @Override   public String toString() {    return getTimeLabel();   }   } }

三、计时器
计时器的主要功能就是你先设定一个时间，然后点击开始，时间就会一秒一秒的减少，在这里我么主要用到了Timer这个系统的计时器，这代码中没有上面难懂的地方，有些地方已经给上注释了，所以直接贴代码，可能有些人会不知道Timer怎么用，之后的知识点中都会有提到。

package com.example.clock;  import java.util.Timer; import java.util.TimerTask;  import android.R.integer; import android.app.AlertDialog; import android.content.Context; import android.os.Handler; import android.text.Editable; import android.text.TextUtils; import android.text.TextWatcher; import android.util.AttributeSet; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout;  public class TimerView extends LinearLayout {   public TimerView(Context context, AttributeSet attrs) {   super(context, attrs);  }   public TimerView(Context context) {   super(context);  }   @Override  protected void onFinishInflate() {   super.onFinishInflate();    btnStart = (Button) findViewById(R.id.btnStart);   btnPause = (Button) findViewById(R.id.btnPause);   btnResume = (Button) findViewById(R.id.btnResume);   btnReset = (Button) findViewById(R.id.btnReset);    btnStart.setOnClickListener(new OnClickListener() {     @Override    public void onClick(View v) {     startTimer();     btnStart.setVisibility(View.GONE);     btnPause.setVisibility(View.VISIBLE);     btnReset.setVisibility(View.VISIBLE);    }   });      btnPause.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     stopTimer();     btnPause.setVisibility(View.GONE);     btnResume.setVisibility(View.VISIBLE);    }   });      btnResume.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     startTimer();     btnPause.setVisibility(View.VISIBLE);     btnResume.setVisibility(View.GONE);    }   });   btnReset.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     stopTimer();     etHour.setText("00");     etMin.setText("00");     etSec.setText("00");          btnReset.setVisibility(View.GONE);     btnResume.setVisibility(View.GONE);     btnPause.setVisibility(View.GONE);     btnStart.setVisibility(View.VISIBLE);    }   });    etHour = (EditText) findViewById(R.id.etHour);   etMin = (EditText) findViewById(R.id.etMin);   etSec = (EditText) findViewById(R.id.etSec);    etHour.setText("00");   etHour.addTextChangedListener(new TextWatcher() {     @Override    public void onTextChanged(CharSequence s, int start, int before,      int count) {     /*      * 这个方法是在Text改变过程中触发调用的， 它的意思就是说在原有的文本s中，      * 从start开始的count个字符替换长度为before的旧文本，      * 注意这里没有将要之类的字眼，也就是说一句执行了替换动作。      */     if (!TextUtils.isEmpty(s)) {       int value = Integer.parseInt(s.toString());       if (value > 59) {       etHour.setText("59");      } else if (value < 0) {       etHour.setText("00");      }     }     checkToEnableBtnStart();    }     @Override    public void beforeTextChanged(CharSequence s, int start, int count,      int after) {    }     @Override    public void afterTextChanged(Editable s) {    }   });   etMin.setText("00");   etMin.addTextChangedListener(new TextWatcher() {     @Override    public void onTextChanged(CharSequence s, int start, int before,      int count) {     if (!TextUtils.isEmpty(s)) {       int value = Integer.parseInt(s.toString());       if (value > 59) {       etMin.setText("59");      } else if (value < 0) {       etMin.setText("00");      }     }     checkToEnableBtnStart();    }     @Override    public void beforeTextChanged(CharSequence s, int start, int count,      int after) {    }     @Override    public void afterTextChanged(Editable s) {    }   });   etSec.setText("00");   etSec.addTextChangedListener(new TextWatcher() {     @Override    public void onTextChanged(CharSequence s, int start, int before,      int count) {     if (!TextUtils.isEmpty(s)) {       int value = Integer.parseInt(s.toString());       if (value > 59) {       etSec.setText("59");      } else if (value < 0) {       etSec.setText("00");      }     }     checkToEnableBtnStart();    }     @Override    public void beforeTextChanged(CharSequence s, int start, int count,      int after) {    }     @Override    public void afterTextChanged(Editable s) {    }   });    btnStart.setVisibility(View.VISIBLE);   btnStart.setEnabled(false);   btnPause.setVisibility(View.GONE);   btnResume.setVisibility(View.GONE);   btnReset.setVisibility(View.GONE);  }   private void checkToEnableBtnStart() {   btnStart.setEnabled((!TextUtils.isEmpty(etHour.getText()) && Integer     .parseInt(etHour.getText().toString()) > 0)     || (!TextUtils.isEmpty(etMin.getText()) && Integer       .parseInt(etMin.getText().toString()) > 0)     || (!TextUtils.isEmpty(etSec.getText()) && Integer       .parseInt(etSec.getText().toString()) > 0));  }   private void startTimer() {   if (timerTask == null) {    allTimeCount = Integer.parseInt(etHour.getText().toString()) * 60      * 60 + Integer.parseInt(etMin.getText().toString()) * 60      + Integer.parseInt(etSec.getText().toString());    timerTask = new TimerTask() {      @Override     public void run() {      allTimeCount--;      handle.sendEmptyMessage(MSG_WHAT_TIME_TICK);      if (allTimeCount <= 0) {       handle.sendEmptyMessage(MSG_WHAT_TIME_IS_UP);       stopTimer();      }     }    };    timer.schedule(timerTask, 1000, 1000);   }  }  private void stopTimer(){   if (timerTask!=null) {    timerTask.cancel();    timerTask=null;   }  }   private Handler handle = new Handler(){      public void handleMessage(android.os.Message msg) {    switch (msg.what) {    case MSG_WHAT_TIME_TICK:     int hour = allTimeCount/60/60;     int min = (allTimeCount/60)%60;     int sec = allTimeCount%60;          etHour.setText(hour+"");     etMin.setText(min+"");     etSec.setText(sec+"");     break;         case MSG_WHAT_TIME_IS_UP:      new AlertDialog.Builder(getContext())     .setTitle("Time is up!")     .setMessage("Time is up!")     .setNegativeButton("Cancle", null).show();          btnReset.setVisibility(View.GONE);     btnResume.setVisibility(View.GONE);     btnPause.setVisibility(View.GONE);     btnStart.setVisibility(View.VISIBLE);     break;     default:     break;    }   };  };  private static final int MSG_WHAT_TIME_IS_UP = 1;  private static final int MSG_WHAT_TIME_TICK = 2;    private int allTimeCount = 0;  private Timer timer = new Timer();  private TimerTask timerTask = null;  private Button btnStart, btnPause, btnResume, btnReset;  private EditText etHour, etMin, etSec;  }

四、秒表
最后的秒表相信大家都不陌生，用到的知识正好之前的三个都有讲到，只要明白前三个后，这个就不难理解了。

package com.example.clock;  import java.util.ArrayList; import java.util.Timer; import java.util.TimerTask;  import android.content.Context; import android.os.Handler; import android.util.AttributeSet; import android.view.View; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView;  public class StopWatchView extends LinearLayout {   private TextView tvHour,tvMin,tvSec,tvMsec;  private Button btnStart,btnPause,btnResume,btnReset,btnLap;  private ListView lvTimeList;  private ArrayAdapter<String> adapter;  public StopWatchView(Context context, AttributeSet attrs) {   super(context, attrs);  }   @Override  protected void onFinishInflate() {   super.onFinishInflate();      tvHour = (TextView) findViewById(R.id.timeHour);   tvHour.setText("0");   tvMin = (TextView) findViewById(R.id.timeMin);   tvMin.setText("0");   tvSec = (TextView) findViewById(R.id.timeSec);   tvSec.setText("0");   tvMsec = (TextView) findViewById(R.id.timeMsec);   tvMsec.setText("0");      btnStart = (Button) findViewById(R.id.btnSWStart);   btnPause = (Button) findViewById(R.id.btnSWPause);   btnResume = (Button) findViewById(R.id.btnSWResume);   btnLap = (Button) findViewById(R.id.btnSWLap);   btnReset = (Button) findViewById(R.id.btnSWReset);      btnStart.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     startTimer();     btnStart.setVisibility(View.GONE);     btnPause.setVisibility(View.VISIBLE);     btnLap.setVisibility(View.VISIBLE);    }   });   btnPause.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     stopTimer();     btnPause.setVisibility(View.GONE);     btnResume.setVisibility(View.VISIBLE);     btnLap.setVisibility(View.GONE);     btnReset.setVisibility(View.VISIBLE);    }   });   btnResume.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     startTimer();     btnResume.setVisibility(View.GONE);     btnPause.setVisibility(View.VISIBLE);     btnLap.setVisibility(View.VISIBLE);     btnReset.setVisibility(View.GONE);    }   });   btnReset.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     stopTimer();     tenMSecs = 0;     adapter.clear();     btnReset.setVisibility(View.GONE);     btnLap.setVisibility(View.GONE);     btnPause.setVisibility(View.GONE);     btnResume.setVisibility(View.GONE);     btnStart.setVisibility(View.VISIBLE);    }   });   btnLap.setOnClickListener(new OnClickListener() {        @Override    public void onClick(View v) {     adapter.insert(String.format("%d:%d:%d.%d", tenMSecs/100/60/60,tenMSecs/100/60%60,tenMSecs/100%60,tenMSecs%100), 0);    }   });   btnLap.setVisibility(View.GONE);   btnPause.setVisibility(View.GONE);   btnResume.setVisibility(View.GONE);   btnReset.setVisibility(View.GONE);      lvTimeList = (ListView) findViewById(R.id.lvWatchTime);   adapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1);   lvTimeList.setAdapter(adapter);      showTimerTask = new TimerTask() {        @Override    public void run() {     handle.sendEmptyMessage(MSG_WHAT_SHOW_TIME);    }   };   timer.schedule(showTimerTask, 200, 200);  }    private void startTimer(){   if (timerTask == null) {    timerTask = new TimerTask() {          @Override     public void run() {      tenMSecs++;     }    };    timer.schedule(timerTask, 10, 10);   }  }  private void stopTimer(){   if (timerTask != null) {    timerTask.cancel();    timerTask = null;   }  }    private int tenMSecs = 0;  private Timer timer =new Timer();  private TimerTask timerTask = null;  private TimerTask showTimerTask = null;  private static final int MSG_WHAT_SHOW_TIME = 1;    private Handler handle = new Handler(){   public void handleMessage(android.os.Message msg) {    switch (msg.what) {    case MSG_WHAT_SHOW_TIME:     tvHour.setText(tenMSecs/100/60/60+"");     tvMin.setText(tenMSecs/100/60%60+"");     tvSec.setText(tenMSecs/100%60+"");     tvMsec.setText(tenMSecs%100+"");     break;     default:     break;    }   };  };  public void onDestroy() {   timer.cancel();  }   }

到此为止，自己的第一个实战算是完成了，但是就是界面很low，这个只是把基本的功能实现了，但是在界面上没有做很大的完善，在之后的实战中会慢慢改进的。

源码下载：Android多功能时钟

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