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| public class StepService extends Service implements SensorEventListener {
//TAG private static String TAG = "StepService"; //存储间隔 private static int duration = 3000; //当前日期 private static String CURRENT_DATE = ""; //传感器 private SensorManager sensorManager;
//广播--监听手机状态变化 private BroadcastReceiver mReceiver; //===============================================倒计时 private TimeCount time; //===============================================数据库操作 private StepsDao stepsDao = DBUtil.getStepsDao(); //当前步数 private int CURRENT_STEPS; //期望步数 private float EXPECT_STEPS; //计步传感器类型 0-counter 1-detector private static int stepSensor = -1; //是否记录 private boolean hasRecord = false; //已经走过的步数 private int hasStepCount = 0; //以前走过的步数 private int previousStepCount = 0; //===============================================采用加速度传感器所要用到的变量
public static float SENSITIVITY = 10; // SENSITIVITY灵敏度 private float mLastValues[] = new float[3 * 2]; private float mScale[] = new float[2]; private float mYOffset; private static long end = 0; private static long start = 0; /** * 最后加速度方向 */ private float mLastDirections[] = new float[3 * 2]; private float mLastExtremes[][] = { new float[3 * 2], new float[3 * 2] }; private float mLastDiff[] = new float[3 * 2]; private int mLastMatch = -1;
//===============================================messenger //跨进程通信--使用Messenger方式 private Messenger messengerFromService = new Messenger(new MessengerHandler()); private Messenger messengerFromClient;
private class MessengerHandler extends Handler{ @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.what){ case Constants.MSG_FROM_CLIENT: messengerFromClient = msg.replyTo; StepService.this.sendMessage(); break; default: break; } } } //===============================================通知相关 private static final int NOTIFI_ID = 100; //格式管理 private DecimalFormat df = new DecimalFormat("#0.0");
@Override public void onCreate() { super.onCreate(); EXPECT_STEPS = 8000f; //初始化广播 initBroadcastReceiver(); new Thread(new Runnable() { @Override public void run() { //获取传感器类型 startStepDetector(); } }).start(); startTimeCount(); initTodayData(); }
/** * 取得今日日期 * @return */ private String getTodayDate(){ Date date = new Date(System.currentTimeMillis()); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); return sdf.format(date); }
/** * 初始化当天的步数 */ private void initTodayData() { CURRENT_DATE = getTodayDate(); //===============================================在这里进行数据新的一列的存储 //通过日期匹配,当数据中有今日步数的行,那么将步数值进行读取,如果没有那么久新增一行,并将CURRENT_STEP存储进去 QueryBuilder qb = stepsDao.queryBuilder(); qb.where(StepsDao.Properties.Date.eq(getTodayDate())); Steps steps = (Steps) qb.unique(); if(steps!=null){ CURRENT_STEPS = steps.getUStep(); }else{ //增加一行 Steps stepsAdd = new Steps(); stepsAdd.setDate(CURRENT_DATE); stepsAdd.setUStep(0); stepsAdd.setHasUpLoad(false); stepsDao.insert(stepsAdd); } } /** * 获取当前步数占有率 */ private String getCurrentOccupancy(){ //默认8000,完善时在Service启动的时候进行复制 return df.format((float)CURRENT_STEPS/EXPECT_STEPS*100); }
/** * 获取传感器实例 */ private void startStepDetector() { if(sensorManager!=null){ sensorManager = null; } sensorManager = (SensorManager) this.getSystemService(SENSOR_SERVICE); addCountStepListener();
} Sensor countSensor ; Sensor detectorSensor ; Sensor accelerateSensor; private void addCountStepListener() { countSensor = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER); detectorSensor = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR); //利用加速度传感器 accelerateSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
if(countSensor!=null){ //选择计步传感器 stepSensor = 0; Log.i(TAG,"计步传感器"); sensorManager.registerListener(StepService.this,countSensor,SENSOR_DELAY_NORMAL); }else if(detectorSensor!=null){ //步数检测器 stepSensor = 1; Log.i(TAG,"步数监测器"); sensorManager.registerListener(StepService.this,detectorSensor,SENSOR_DELAY_FASTEST); }else if(accelerateSensor != null){ stepSensor = 2; int h = 480; mYOffset = h * 0.5f; mScale[0] = -(h * 0.5f * (1.0f / (SensorManager.STANDARD_GRAVITY * 2))); mScale[1] = -(h * 0.5f * (1.0f / (SensorManager.MAGNETIC_FIELD_EARTH_MAX))); Log.i(TAG,"加速度传感器"); sensorManager.registerListener(StepService.this,accelerateSensor,SENSOR_DELAY_FASTEST); }
}
/** * 传感器回调 * @param event */ @Override public void onSensorChanged(SensorEvent event) { if(stepSensor == 0){ int tempStep = (int) event.values[0]; if(!hasRecord){ hasRecord = true; hasStepCount = tempStep; }else{ int thisStepCount = tempStep -hasStepCount; CURRENT_STEPS+=(thisStepCount-previousStepCount); previousStepCount = thisStepCount; } sendMessage(); setNotification(); }else if(stepSensor == 1){ if(event.values[0] == 1.0){ hasRecord = true; CURRENT_STEPS++; sendMessage(); setNotification(); } }else if(stepSensor == 2){ hasRecord = true; synchronized (this) { float vSum = 0; for (int i = 0; i < 3; i++) { final float v = mYOffset + event.values[i] * mScale[1]; vSum += v; } int k = 0; float v = vSum / 3;
float direction = (v > mLastValues[k] ? 1 : (v < mLastValues[k] ? -1 : 0)); if (direction == -mLastDirections[k]) { // Direction changed int extType = (direction > 0 ? 0 : 1); // minumum or // maximum? mLastExtremes[extType][k] = mLastValues[k]; float diff = Math.abs(mLastExtremes[extType][k] - mLastExtremes[1 - extType][k]);
if (diff > SENSITIVITY) { boolean isAlmostAsLargeAsPrevious = diff > (mLastDiff[k] * 2 / 3); boolean isPreviousLargeEnough = mLastDiff[k] > (diff / 3); boolean isNotContra = (mLastMatch != 1 - extType);
if (isAlmostAsLargeAsPrevious && isPreviousLargeEnough && isNotContra) { end = System.currentTimeMillis(); if (end - start > 500) {// 此时判断为走了一步
CURRENT_STEPS++; sendMessage(); setNotification(); mLastMatch = extType; start = end; } } else { mLastMatch = -1; } } mLastDiff[k] = diff; } mLastDirections[k] = direction; mLastValues[k] = v; } } }
@Override public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
private void sendMessage(){ Message msg = Message.obtain(null,Constants.MSG_FROM_SERVICE); Bundle bundle = new Bundle(); bundle.putInt("currentSteps",CURRENT_STEPS); msg.setData(bundle); try { if(hasRecord&&messengerFromClient!=null) { messengerFromClient.send(msg); } } catch (RemoteException e) { e.printStackTrace(); } }
/** * 注册广播 */ private void initBroadcastReceiver() { final IntentFilter filter = new IntentFilter(); // 屏幕灭屏广播 filter.addAction(Intent.ACTION_SCREEN_OFF); //关机广播 filter.addAction(Intent.ACTION_SHUTDOWN); // 屏幕亮屏广播 filter.addAction(Intent.ACTION_SCREEN_ON); // 屏幕解锁广播 filter.addAction(Intent.ACTION_USER_PRESENT); // 当长按电源键弹出“关机”对话或者锁屏时系统会发出这个广播 // 所以监听这个广播,当收到时就隐藏自己的对话,如点击pad右下角部分弹出的对话框 filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); //监听日期变化 filter.addAction(Intent.ACTION_DATE_CHANGED); filter.addAction(Intent.ACTION_TIME_CHANGED); filter.addAction(Intent.ACTION_TIME_TICK);
mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if(Intent.ACTION_SCREEN_ON.equals(action)){ Log.i(TAG,"ScreenOn"); } else if (Intent.ACTION_SCREEN_OFF.equals(action)) { Log.i(TAG,"ScreenOff"); //60s duration = 6000; }else if (Intent.ACTION_USER_PRESENT.equals(action)){ Log.i(TAG,"screen unlock"); save(); //30s duration = 3000; }else if(Intent.ACTION_SHUTDOWN.equals(action)){ Log.i(TAG,"shutdown"); save(); }else if(Intent.ACTION_DATE_CHANGED.equals(action)){ save(); isNewDay(); }else if(Intent.ACTION_TIME_CHANGED.equals(action)){ save(); isNewDay(); }else if(Intent.ACTION_TIME_TICK.equals(action)){ save(); // isNewDay(); }else if("ANewacount".equals(action)){
//当时一个新用户登录的时候 //清除数据 Log.i(TAG,"收到新账户广播"); initTodayData(); } } }; registerReceiver(mReceiver,filter); }
/** * 0点时初始化数据 */ private void isNewDay() { String time = "00:00"; if(time.equals(new SimpleDateFormat("HH:mm").format(new Date()))||(!CURRENT_DATE.equals(getTodayDate()))){ initTodayData(); } }
/** * 存储到数据中去 */ private void save() { int tempStep = CURRENT_STEPS; QueryBuilder qb = stepsDao.queryBuilder(); qb.where(StepsDao.Properties.Date.eq(getTodayDate())); Steps steps = (Steps) qb.unique(); //不为空时,说明还未到12点,我们进行更新就行,为空说明为最后一次存储 if(steps!=null){ steps.setUStep(tempStep); steps.setDate(CURRENT_DATE); stepsDao.update(steps); }else{ steps = new Steps(); steps.setUStep(tempStep); steps.setDate(CURRENT_DATE); stepsDao.update(steps); }
}
@Nullable @Override public IBinder onBind(Intent intent) { return messengerFromService.getBinder(); }
@Override public int onStartCommand(Intent intent, int flags, int startId) { setNotification(); return START_STICKY; //如果被系统kill掉,系统会自动将kill时的状态保留为开始状态,之后进行重连 }
private void setNotification() { PendingIntent pd = PendingIntent.getActivity(this,0,new Intent(this, MainViewActivity.class),0); //在这里进行前台服务 Notification.Builder builder = new Notification.Builder(this) .setOngoing(true) .setSmallIcon(R.drawable.poplog) .setLargeIcon(BitmapFactory.decodeResource(this.getResources(),R.drawable.poplog)) .setContentTitle("当前步数"+CURRENT_STEPS) .setContentText("今日完成百分比"+getCurrentOccupancy()+"%") .setWhen(System.currentTimeMillis()) .setContentIntent(pd); startForeground(NOTIFI_ID,builder.build()); }
@Override public void onDestroy() { super.onDestroy(); //取消前台进程 stopForeground(true); unregisterReceiver(mReceiver); //注销各传感器 if(countSensor!= null || detectorSensor != null || accelerateSensor != null){ sensorManager.unregisterListener(StepService.this); }
}
/** * 开始计时 */ private void startTimeCount() { time = new TimeCount(duration,1000); time.start(); }
private class TimeCount extends CountDownTimer{
/** * @param millisInFuture The number of millis in the future from the call * to {@link #start()} until the countdown is done and {@link #onFinish()} * is called. * @param countDownInterval The interval along the way to receive * {@link #onTick(long)} callbacks. */ public TimeCount(long millisInFuture, long countDownInterval) { super(millisInFuture, countDownInterval); }
@Override public void onTick(long millisUntilFinished) {
}
@Override public void onFinish() { //如果计时器正常结束,则开始计步 time.cancel(); save(); startTimeCount(); } } }
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