Android 闹钟 开发过程记录（五）

我的闹钟响铃的逻辑是这样设计的：

1.设置好闹钟后，立即发送一个带有唯一id的延迟意图PendingIntent广播；

2.当时间到的时候，广播接受者接收到发送过来的数据，并开启一个服务，将数据传递进去；

3.服务创建成功后，根据传递过来的数据进行响铃和振动操作，同时启动一个响铃的activity界面，将时间，标签等信息传递过去显示；

4.响铃的activity创建成功后，立即与服务进行绑定，界面上有两个按钮，暂停再响 和 关闭闹钟，分别对应服务里面的相应的方法。

5.当点击 暂停5分钟再响，会在服务里发送一个5分钟的延迟广播，同时 解绑服务-->停止服务；

   当点击关闭闹钟的时候，如果该闹钟的重复周期为只响一次，则取消该闹钟的广播，更新数据库，同时 解绑服务-->停止服务；如果该闹钟的重读周期为其它，则计算与下一次闹铃最短的时间间隔，发送一个延迟广播，同时 解绑服务-->停止服务。

整体的思路概括一下：有几个闹钟，系统里就有几个广播；当一个闹钟的广播处理完成之后，根据重复周期判断是否发送下一次广播。

广播接受者的代码如下：

public class AlarmClockReceiver extends BroadcastReceiver {
	private static final String TAG = "AlarmClockReceiver";
	public static final String Alarm_CLOCK_RING_ONLY_ONCE = "只响一次";

	@Override
	public void onReceive(Context context, Intent intent) {

		String action = intent.getAction();
		if(action.equals("cn.edu.usts.cardhelper.alarmclock")){
			Log.i(TAG, "--------------------闹钟的广播接受者-----------------------");
			Bundle bundle = intent.getExtras();
			int alarmClockId = bundle.getInt("alarmClockId");
			int hour = bundle.getInt("hour");
			int minute = bundle.getInt("minute");
			String repeatCycle = bundle.getString("repeatCycle");
			String ringInfo = bundle.getString("ringInfo");
			int isShake = bundle.getInt("isShake");
			String tag = bundle.getString("tag");
			Log.i(TAG, "---接收到的闹钟id为："+alarmClockId+"---重复周期为："+repeatCycle+"---铃声信息："+ringInfo+"---振动："+isShake+"---hour："+hour+"---minute："+minute+"---tag:"+tag);
			
			//开启一个服务
			Intent ringIntent = new Intent(context, AlarmClockService.class);
			ringIntent.putExtras(bundle);
			ringIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
			context.startService(ringIntent);
			
		}
		
	}
}

服务的代码如下：

public class AlarmClockService extends Service {

	public static final String TAG = "AlarmClockService";
	public static final String Alarm_CLOCK_RING_ONLY_ONCE = "只响一次";
	private AlarmManager alarmManager;
	private MediaPlayer mediaPlayer;
	private Vibrator vibrator;
	private Bundle bundle;
	private Intent toReceiverIntent;
	@Override
	public IBinder onBind(Intent intent) {
		Log.i(TAG, "--------------onBind----------");
		return new AlarmClockRingServiceProvider();
	}

	@Override
	public void onCreate() {
		Log.i(TAG, "--------------onCreate----------");
		super.onCreate();
		alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
		vibrator=(Vibrator)getSystemService(Service.VIBRATOR_SERVICE);

	}

	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
		Log.i(TAG, "--------------onStartCommand----------");
		bundle = intent.getExtras();
		//在闹铃界面点击 暂停再响 或 关闭 时 发送的意图
		toReceiverIntent =  new Intent(this , AlarmClockReceiver.class);
		toReceiverIntent.setAction("cn.edu.usts.cardhelper.alarmclock");
		toReceiverIntent.putExtras(bundle);

		//发送到 闹铃界面的意图
		Intent alarmClockRingintent = new Intent(this, AlarmClockRingActivity.class);
		alarmClockRingintent.putExtras(bundle);
		alarmClockRingintent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
		startActivity(alarmClockRingintent);

		String ringInfo = bundle.getString("ringInfo");
		Uri audioUri = Uri.parse(ringInfo.split("##")[1]);
		if( ! audioUri.equals("无")){
			try {
				mediaPlayer = new MediaPlayer();
				mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
				mediaPlayer.setLooping(true);
				mediaPlayer.setDataSource(this, audioUri);
				mediaPlayer.prepareAsync();
				mediaPlayer.setOnPreparedListener(new OnPreparedListener() {

					@Override
					public void onPrepared(MediaPlayer mp) {
						mediaPlayer.start();
					}
				});
			}catch (Exception e) {
				e.printStackTrace();
			}
		}
		int isShake = bundle.getInt("isShake");
		if(isShake == 1){
			vibrator.vibrate(new long[] { 0, 1000, 1000, 1000, 1000 }, 0);
		}
		return super.onStartCommand(intent, flags, startId);
	}

	@Override
	public boolean onUnbind(Intent intent) {
		Log.i(TAG, "--------------onUnbind----------");
		return super.onUnbind(intent);
	}

	@Override
	public void onDestroy() {
		Log.i(TAG, "--------------onDestroy----------");
		super.onDestroy();
	}

	public void stopMusic(){
		if(mediaPlayer != null && mediaPlayer.isPlaying()){
			mediaPlayer.stop();
			mediaPlayer.release();
			mediaPlayer = null;
		}
	}

	public void stopVibrator(){
		if(vibrator != null ){
			vibrator.cancel();
			vibrator = null;
		}
	}

	//服务要暴露方法 必须要有一个中间人
	private class AlarmClockRingServiceProvider extends Binder implements IAlarmClockRingServiceProvider{

		@Override
		public void pause5MinRing() {
			stopMusic();
			stopVibrator();
			int alarmClockId = bundle.getInt("alarmClockId");
			PendingIntent pi = PendingIntent.getBroadcast(AlarmClockService.this, alarmClockId, toReceiverIntent, PendingIntent.FLAG_UPDATE_CURRENT);
			alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+5*60*1000, pi);
			Log.i(TAG, "----------5分钟后响铃的广播发送完毕！-----------");
		}

		@Override
		public void close() {
			stopMusic();
			stopVibrator();
			String repeatCycle = bundle.getString("repeatCycle");
			int alarmClockId = bundle.getInt("alarmClockId");
			int hour = bundle.getInt("hour");
			int minute = bundle.getInt("minute");
			if(repeatCycle.equals(Alarm_CLOCK_RING_ONLY_ONCE)){		//只响一次的闹钟  --> 取消该广播，更新数据库
				alarmManager.cancel(PendingIntent.getBroadcast(AlarmClockService.this, alarmClockId, toReceiverIntent, PendingIntent.FLAG_UPDATE_CURRENT));
				AlarmClockDao dao = new AlarmClockDao(AlarmClockService.this);
				dao.updataState(alarmClockId, 0);
				Log.i(TAG, "--只响一次的闹钟广播已取消，数据库更新完毕！！-----");
			}else{			//  --> 发送下一次闹钟的广播
				int dTime = NextRingTimeProvider.showRingTimeByRepeatCycle(repeatCycle, hour, minute);
				PendingIntent pi = PendingIntent.getBroadcast(AlarmClockService.this, alarmClockId, toReceiverIntent, PendingIntent.FLAG_UPDATE_CURRENT);
				alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+dTime, pi);
				Log.i(TAG, "--距离下一次闹钟的剩余时间为"+RingTextUtil.showDTimeText(dTime)+"-----");
			}
		}

		@Override
		public void oneMinClose() {
			pause5MinRing();
		}

	}
}

响铃界面的代码如下：

public class AlarmClockRingActivity extends Activity implements OnClickListener  {  
	public static final String TAG = "AlarmClockRingActivity";
	private TextView tv_time;
	private TextView tv_tag;
	private Button btn_pause_ring;
	private Button btn_close;
	private IAlarmClockRingServiceProvider ringServiceProvider;		//服务的中间人接口对象
	private MyConn conn;
	private Intent serviceIntent; 
	private boolean flag_is_pause_or_close;

	@SuppressLint("HandlerLeak")
	private Handler handler = new Handler(){
		public void handleMessage(android.os.Message msg) {
			handler.postDelayed(new Runnable() {

				@Override
				public void run() {
					if( ! flag_is_pause_or_close){
						ringServiceProvider.oneMinClose();
						AlarmClockRingActivity.this.finish();
						Log.i(TAG, "--------响铃一分钟无反应。。--成功调用服务里五分钟后再响的方法!----------------");
					}else{
						Log.i(TAG, "--------点击了暂停或关闭闹钟。--一分钟失效！---------------");
					}
				}
			}, 60*1000);
		};
	};

	@Override  
	public void onCreate(Bundle savedInstanceState) {  
		super.onCreate(savedInstanceState);  
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,   
				WindowManager.LayoutParams.FLAG_FULLSCREEN);  
		setContentView(R.layout.alarm_clcok_ring_activity);
		//锁屏状态下 唤醒屏幕 保持常亮
		getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
				|WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
				|WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
				|WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);

		tv_time = (TextView) this.findViewById(R.id.tv_alarm_clock_ring_time);
		tv_tag = (TextView) this.findViewById(R.id.tv_alarm_clock_ring_tag);
		btn_pause_ring = (Button) this.findViewById(R.id.btn_alarm_clock_ring_pause_ring);
		btn_close = (Button) this.findViewById(R.id.btn_alarm_clock_ring_close);
		btn_pause_ring.setOnClickListener(this);
		btn_close.setOnClickListener(this);

		handler.sendEmptyMessage(0);
	}  

	@Override
	protected void onStart() {
		super.onStart();
		//绑定闹钟到来的服务
		conn = new MyConn();
		serviceIntent = new Intent(this, AlarmClockService.class);
		bindService(serviceIntent, conn, 0);
		Bundle bundle = getIntent().getExtras();
		//		String hour = bundle.getInt("hour")+"";
		//		String minute = bundle.getInt("minute")+"";
		Calendar calendar = Calendar.getInstance();
		String hour = calendar.get(Calendar.HOUR_OF_DAY)+"";
		String minute = calendar.get(Calendar.MINUTE)+"";
		if(hour.length() == 1){
			hour = "0"+hour;
		}
		if(minute.length() == 1){
			minute = "0"+minute;
		}
		tv_time.setText(hour+":"+minute);
		tv_tag.setText(bundle.getString("tag"));
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn_alarm_clock_ring_pause_ring:
			flag_is_pause_or_close =true;
			ringServiceProvider.pause5MinRing();
			finish();
			break;
		case R.id.btn_alarm_clock_ring_close:
			flag_is_pause_or_close =true;
			ringServiceProvider.close();
			finish();
			break;
		}
	}

	private class MyConn implements ServiceConnection{
		//当服务失去连接的时候调用（一般进程挂了，服务被异常杀死）
		@Override
		public void onServiceDisconnected(ComponentName name) {

		}
		//当服务被连接的时候调用 服务识别成功 绑定的时候调用
		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			ringServiceProvider = (IAlarmClockRingServiceProvider) service;
			Log.i(TAG, "-------在activity里面得到了服务的中间人对象-------------");
		}
	}

	@Override
	protected void onStop() {
		super.onPause();
	}

	@Override
	protected void onDestroy() {
		unbindService(conn);
		stopService(serviceIntent);
		super.onDestroy();
	}

	@Override
	public void onBackPressed() {
		return;
	}

}  

由于android手机重启之后，会清空所有的广播，所以要注册一个手机重启的接受者，当手机重启成功后，读取闹钟的数据库，发送响应的延迟广播。

代码如下：

public class BootCompleteReceiver extends BroadcastReceiver {

	private static final String TAG = "BootCompleteReceiver";
	public static final String Alarm_CLOCK_RING_ONLY_ONCE = "只响一次";
	@Override
	public void onReceive(Context context, Intent intent) {
		Log.i(TAG, "----------手机重启完毕！-------------");
		AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
		//TODO 读取数据库 发送下一次闹钟的广播
		AlarmClockDao dao = new AlarmClockDao(context);
		List clockInfos = dao.findAll();
		for (AlarmClockInfo clockInfo : clockInfos) {
			if(clockInfo.getState() != 0){
				Intent alarmIntent = new Intent(context, AlarmClockReceiver.class);
				alarmIntent.setAction("cn.edu.usts.cardhelper.alarmclock");
				Bundle bundle = new Bundle();
				bundle.putInt("alarmClockId", clockInfo.getId());
				bundle.putString("repeatCycle",clockInfo.getRepeatCycle());
				bundle.putInt("hour", clockInfo.getHour());
				bundle.putInt("minute", clockInfo.getMinute());
				bundle.putString("ringInfo", clockInfo.getRingInfo());
				bundle.putInt("isShake", clockInfo.getShake());
				bundle.putString("tag", clockInfo.getTag());
				alarmIntent.putExtras(bundle);
				PendingIntent pi = PendingIntent.getBroadcast(context, clockInfo.getId(), alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
				int dTime = NextRingTimeProvider.showRingTimeByRepeatCycle(clockInfo.getRepeatCycle(), clockInfo.getHour(), clockInfo.getMinute());
				if(clockInfo.getRepeatCycle().equals(Alarm_CLOCK_RING_ONLY_ONCE)){
					Calendar calendar = Calendar.getInstance();
					calendar.set(Calendar.HOUR_OF_DAY, clockInfo.getHour());
					calendar.set(Calendar.MINUTE, clockInfo.getMinute());
					calendar.set(Calendar.SECOND, 0);
					calendar.set(Calendar.MILLISECOND, 0);
					if(System.currentTimeMillis() < calendar.getTimeInMillis()){
						alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+dTime, pi);
						Log.i(TAG, "--重启广播发送成功！  只响一次的闹钟时间未到，广播已发送--闹钟ID:"+clockInfo.getId()+"--repeatCycle"+clockInfo.getRepeatCycle()+"--hour:"+clockInfo.getHour()+"---minute:"+clockInfo.getMinute()+"---铃声为："+clockInfo.getRingInfo()+"---振动："+clockInfo.getShake()+"---tag:"+clockInfo.getTag());
					}
				}else{
					alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+dTime, pi);
					Log.i(TAG, "--重启广播发送成功！  --闹钟ID:"+clockInfo.getId()+"--repeatCycle"+clockInfo.getRepeatCycle()+"--hour:"+clockInfo.getHour()+"---minute:"+clockInfo.getMinute()+"---铃声为："+clockInfo.getRingInfo()+"---振动："+clockInfo.getShake()+"---tag:"+clockInfo.getTag());

				}
			}
			
		}
	}

}

闹钟的广播接收者 和 重启的广播接受者 都需要在清单文件中配置一下：