Java TimeUtil类代码示例

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public void onSensorChanged(SensorEvent event) {

	JsonObject sensingData = new JsonObject();

	sensingData.addProperty(TIMESTAMP,
			TimeUtil.uptimeNanosToTimestamp(event.timestamp));
	sensingData.addProperty(ACCURACY, event.accuracy);

	final String[] valueNames = getValueNames();
	int valuesLength = Math.min(event.values.length, valueNames.length);

	for (int i = 0; i < valuesLength; i++) {
		String valueName = valueNames[i];
		sensingData.addProperty(valueName, event.values[i]);
	}

	sendData(sensingData);

}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public void onDataReceived(IJsonObject completeProbeUri, IJsonObject data) {
	Log.d(LogUtil.TAG, "SimpleLocationProbe received data: " + data.toString());
	if (startTime == null) {
		startTime = TimeUtil.getTimestamp();
		getHandler().postDelayed(sendLocationRunnable, TimeUtil.secondsToMillis(maxWaitTime));
	}
	if (isBetterThanCurrent(data)) {
		Log.d(LogUtil.TAG, "SimpleLocationProbe evaluated better location.");
		bestLocation = data;
	}
	if (goodEnoughAccuracy != null && bestLocation.get(ACCURACY).getAsDouble() < goodEnoughAccuracy.doubleValue()) {
		Log.d(LogUtil.TAG, "SimpleLocationProbe evaluated good enough location.");
		if (getState() == State.RUNNING) { // Actively Running
			stop();
		} else if (getState() == State.ENABLED) { // Passive listening
			// TODO: do we want to prematurely end this, or wait for the full duration
			// Things to consider: 
			// - the device falling to sleep before we send
			// - too much unrequested data if we send all values within accuracy limits 
			// (this will restart immediately if more passive data continues to come in)
			getHandler().removeCallbacks(sendLocationRunnable);
			sendCurrentBestLocation();
		}
	}
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
protected void onEnable() {
	super.onEnable();
	sensorManager = (SensorManager) getContext().getSystemService(Context.SENSOR_SERVICE);
	sensor = sensorManager.getDefaultSensor(getSensorType());
	final String[] valueNames = getValueNames();
	sensorListener = new SensorEventListener() {
		
		@Override
		public void onSensorChanged(SensorEvent event) {
			JsonObject data = new JsonObject();
			data.addProperty(TIMESTAMP, TimeUtil.uptimeNanosToTimestamp(event.timestamp));
			data.addProperty(ACCURACY, event.accuracy);
			int valuesLength = Math.min(event.values.length, valueNames.length);
			for (int i = 0; i < valuesLength; i++) {
				String valueName = valueNames[i];
				data.addProperty(valueName, event.values[i]);
			}
			sendData(data);
		}
		
		@Override
		public void onAccuracyChanged(Sensor sensor, int accuracy) {
		}
	};
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
protected void onStart() {
	super.onStart();
	Log.d(LogUtil.TAG, "SimpleLocationProbe starting, registering listener");
	startTime = TimeUtil.getTimestamp();
	locationProbe.registerListener(listener);
	getHandler().sendMessageDelayed(getHandler().obtainMessage(STOP_MESSAGE), TimeUtil.secondsToMillis(maxWaitTime));
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
protected void onStart() {
	super.onStart();
	startDiscovery();
	if (maxScanTime != null) {
		getHandler().sendMessageDelayed(getHandler().obtainMessage(STOP_MESSAGE), TimeUtil.secondsToMillis(maxScanTime));
	}
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public void run() {
	if (am != null) {
		List<RecentTaskInfo> currentTasks = am.getRecentTasks(1, ActivityManager.RECENT_WITH_EXCLUDED);
		if (!currentTasks.isEmpty()) {
			RecentTaskInfo updatedTask = currentTasks.get(0);
			if (currentRunningTask == null || !currentRunningTask.baseIntent.filterEquals(updatedTask.baseIntent)) {
				endCurrentTask();
				currentRunningTask = updatedTask;
				currentRunningTaskStartTime = TimeUtil.getTimestamp();
			} 
		}
		getHandler().postDelayed(this, TimeUtil.secondsToMillis(pollInterval));
	}
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
public void endCurrentTask() {
	if (currentRunningTask != null && currentRunningTaskStartTime != null) {
		BigDecimal duration = TimeUtil.getTimestamp().subtract(currentRunningTaskStartTime);
		sendData(currentRunningTask, currentRunningTaskStartTime, duration);
		reset();
	}
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
public BigDecimal getNextTime(Number previousTime) {
	if (interval == null) {
		return null;
	} else if (previousTime == null) {
		return TimeUtil.getTimestamp();
	} else {
		return DecimalTimeUnit.decimal(previousTime).add(interval);
	}
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
public void set(String type, Uri componentAndAction, Schedule schedule) {
	
	// Creates pending intents that will call back into FunfManager
	// Uses alarm manager to time them
	Intent intent = getFunfIntent(context, type, componentAndAction);
	PendingIntent operation = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
	
	// TODO: figure out how to do previous time for all components, including pipeline actions
	Number previousTime = null;
	
	// TODO: add random start for initial
	// startTimeMillis += random;
	

	BigDecimal startTime = schedule.getNextTime(previousTime);
	if (startTime != null) {
		long startTimeMillis = TimeUtil.secondsToMillis(startTime);
		if (schedule.getInterval() == null || schedule.getInterval().intValue() == 0) {
			alarmManager.set(AlarmManager.RTC_WAKEUP, startTimeMillis, operation);
		} else {
			long intervalMillis = TimeUtil.secondsToMillis(schedule.getInterval());
			if (schedule.isStrict()) {
				alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, startTimeMillis, intervalMillis, operation);
			} else {
				alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, startTimeMillis, intervalMillis, operation);
			}
		}
	}
				
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public void onCreate(SQLiteDatabase db) {
	db.execSQL(DATA_TABLE.getCreateTableSQL());
	db.execSQL(FILE_INFO_TABLE.getCreateTableSQL());
	// Insert file identifier information
	String installationUuid = UuidUtil.getInstallationId(context);
	String fileUuid = UUID.randomUUID().toString();
	double createdTime = TimeUtil.getTimestamp().doubleValue();
	db.execSQL(String.format(Locale.US, "insert into %s (%s, %s, %s, %s) values ('%s', '%s', '%s', %f)", 
			FILE_INFO_TABLE.name, 
			COLUMN_DATABASE_NAME, COLUMN_INSTALLATION, COLUMN_UUID, COLUMN_CREATED,
			databaseName, installationUuid, fileUuid, createdTime));
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public String generateName(final String name) {
	return name == null ? null : TimeUtil.getTimestamp() + "_" + name;
}
 

import edu.mit.media.funf.time.TimeUtil; //导入依赖的package包/类
@Override
public void onDataReceived(IJsonObject completeProbeUri, IJsonObject acclerometerData) {
	double currentSecs = acclerometerData.get(AccelerometerSensorProbe.TIMESTAMP).getAsDouble();
	double x = acclerometerData.get(AccelerometerSensorProbe.X).getAsDouble();
	double y = acclerometerData.get(AccelerometerSensorProbe.Y).getAsDouble();
	double z = acclerometerData.get(AccelerometerSensorProbe.Z).getAsDouble();
	
	if (prevSecs == 0)
	{
		prevSecs = currentSecs;
	}
      	double diffSecs = currentSecs - prevSecs;
      	prevSecs = currentSecs;

      	frameBuffer[frameSamples][0] = x;
      	frameBuffer[frameSamples][1] = y;
      	frameBuffer[frameSamples][2] = z;
      	frameSamples ++;
      	frameTimer += diffSecs;
      	
      	if ((frameTimer >= frameDuration) || (frameSamples == (frameBufferSize - 1))) {
	
      		JsonObject data = new JsonObject();
      		double fN = (double)frameSamples;
      		if (prevFrameSecs == 0) {
              	prevFrameSecs = currentSecs;
              }
      		
      		double diffFrameSecs = currentSecs - prevFrameSecs;
              prevFrameSecs = currentSecs;
              data.addProperty(TIMESTAMP, currentSecs);
              data.addProperty(DIFF_FRAME_SECS, new BigDecimal(diffFrameSecs).setScale(TimeUtil.MICRO, RoundingMode.HALF_EVEN));
              data.addProperty(NUM_FRAME_SAMPLES, frameSamples);
              
              data.add(X, getFeatures(0, fN));
              data.add(Y, getFeatures(1, fN));
              data.add(Z, getFeatures(2, fN));
              
              sendData(data);
              
              // Reset frame buffer counters
      		frameSamples = 0;
      		frameTimer = 0;

      		// Ensure buffer is zero-padded
      		for (double[] row: frameBuffer) {
      			Arrays.fill(row, 0);
      		}
      	}
}