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ਫௗܟຬ
lҐஔใΛਖ਼֬ʹτϥοΩϯά͢Δٕज़z
@mizutory
/
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ࣗݾհ
4POZ&SJDTTPOͰܞଳిͷ։ൃΛ9QFSJB9
·Ͱ͍ͬͯ·ͨ͠ɻ
%FWJDF%SJWFS
#PPU$PEF
.FNPSZ.BOBHFS
(PMESVTI$PNQVUJOHגࣜձࣾΛ࢝ΊΔ
ҐஔใΛͬͨ"OESPJEJ04ΞϓϦΛ։ൃͯ͠དྷ·ͨ͠ɻ
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No content
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Ґஔใͷऔಘ
Ϛοϓͷඳը
ҐஔใͷϑΟϧλϦϯά
όοςϦʔফඅʹ͍ͭͯ
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Ґஔใͷऔಘ
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ҐஔใτϥοΩϯάͷͨΊͷΞʔΩςΫνϟ
.BJO"DUJWJUZ -PDBUJPO4FSWJDF
TUBSU
CJOE
PO4FSWJDF$POOFDUFE
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-PDBUJPO.BOBHFS
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Integer gpsFreqInMillis = 1000;
Integer gpsFreqInDistance = 5; // in meters
locationManager.addGpsStatusListener(this);
locationManager.requestLocationUpdates(gpsFreqInMillis,
gpsFreqInDistance,
criteria, this, null);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Integer gpsFreqInMillis = 1000;
Integer gpsFreqInDistance = 5; // in meters
locationManager.addGpsStatusListener(this);
locationManager.requestLocationUpdates(gpsFreqInMillis,
gpsFreqInDistance,
criteria, this, null);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Integer gpsFreqInMillis = 1000;
Integer gpsFreqInDistance = 5; // in meters
locationManager.addGpsStatusListener(this);
locationManager.requestLocationUpdates(gpsFreqInMillis,
gpsFreqInDistance,
criteria, this, null);
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Integer gpsFreqInMillis = 1000;
Integer gpsFreqInDistance = 5; // in meters
locationManager.addGpsStatusListener(this);
locationManager.requestLocationUpdates(gpsFreqInMillis,
gpsFreqInDistance,
criteria, this, null);
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$SJUFSJBͷ࡞
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
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Ґஔใऔಘ࣌ͷίʔϧόοΫPO-PDBUJPO$IBOHFE
͜͜Ͱ-PDBUJPOΦϒδΣΫτΛऔಘͯ͠ɺ-PDBM#SPBEDBTU.BOBHFSΛͬ
ͯαʔϏεͷ֎ʹ௨͢Δɻ
public void onLocationChanged(final Location newLocation) {
if(isLogging){
//locationList.add(newLocation);
filterAndAddLocation(newLocation);
}
Intent intent = new Intent("LocationUpdated");
intent.putExtra("location", newLocation);
LocalBroadcastManager.getInstance(this.getApplication()).sendBroadcast(intent);
}
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Ϛοϓͷඳը
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.BQ"1*,FZͷऔಘ
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HSBEMF
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.BQ7JFX
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mapView = (MapView) this.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
map = googleMap;
map.getUiSettings().setZoomControlsEnabled(false);
map.setMyLocationEnabled(false);
map.getUiSettings().setCompassEnabled(true);
map.getUiSettings().setMyLocationButtonEnabled(true);
w ζʔϜίϯτϩʔϧΛඇදࣔʹ͢Δɻ
w ࣗͷҐஔΛࣔ͢ΠϯσΟέʔλʔΛඇදࣔʹ͢Δɻ ޙͰࣗͰඳ͘ʣ
w ίϯύεͷػೳΛΦϯʹ͢Δ
w ݱࡏʹඈͿϘλϯΛදࣔʹ͢Δ
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Ϛοϓ্ͷඳը
-PDBUJPO4FSWJDF
.BJO"DUJWJUZ
-PDBUJPO
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Ϛοϓ্ͷඳը
NBQBEE$JSDMF
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Ϛοϓ্ͷඳը
NBQBEE.BSLFS
[PPNͯ͠ಉ͡େ͖͞
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Ϛοϓ্ͷඳը
NBQBEE1PMZMJOF
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No content
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ϑΟϧλϦϯά
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औಘ࣌ࠁͰϑΟϧλʔ͢Δ
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ҐஔใऔಘλΠϛϯάʹӨڹΛ༩͑Δͷ
• GPSӴͷҐஔ ʢ಄্ʹͨ͘͞Μ͋Δ͔Ͳ͏͔ʣ
• ӴͱAndroidػͱͷؒͷোʢϏϧɺथɺӢͳ
Ͳʣ
• ܞଳిجہͷҐஔ ʢۙ͘ʹͨ͘͞Μ͋Δ͔ʣ
• ܞଳిجہͱAndroidػͱͷؒͷোͷঢ়گ
ݹ͍Ґஔใ Ωϟογϡ͞ΕͨҐஔใ
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Ґஔใͷݹ͞Λଌఆͯ͠ϑΟϧλʔ͢Δ
private long getLocationAge(Location newLocation){
long locationAge;
if(android.os.Build.VERSION.SDK_INT >= 17) {
long currentTimeInMilli = (long)(SystemClock.elapsedRealtimeNanos() / 1000000);
long locationTimeInMilli = (long)(newLocation.getElapsedRealtimeNanos() / 1000000
locationAge = currentTimeInMilli - locationTimeInMilli;
}else{
locationAge = System.currentTimeMillis() - newLocation.getTime();
}
return locationAge;
}
long age = getLocationAge(location);
if(age > 5 * 1000){ //more than 5 seconds
Log.d(TAG, "Location is old");
oldLocationList.add(location);
return false;
}
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ਫฏํͷਫ਼ͰϑΟϧλʔ͢Δ
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ਫฏํͷਫ਼͕औΕͳ͍έʔεΛ͘
if(location.getAccuracy() <= 0){
Log.d(TAG, "Latitidue and longitude values are invalid.");
noAccuracyLocationList.add(location);
return false;
}
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ਫฏํͷਫ਼ͰϑΟϧλʔ͢Δ
float horizontalAccuracy = location.getAccuracy();
if(horizontalAccuracy > 10){ //10meter filter
Log.d(TAG, "Accuracy is too low.");
inaccurateLocationList.add(location);
return false;
}
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ϑΟϧλʔͨ͠ྫ
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HFU"DDVSBDZ
ͷਫ਼
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,BMNBO'JMUFSͰϑΟϧλʔ͢Δ
/* Kalman Filter */
float Qvalue;
long locationTimeInMillis = (long)(location.getElapsedRealtimeNanos() / 1000000);
long elapsedTimeInMillis = locationTimeInMillis - runStartTimeInMillis;
if(currentSpeed == 0.0f){
Qvalue = 3.0f; //3 meters per second
}else{
Qvalue = currentSpeed; // meters per second
}
kalmanFilter.Process(location.getLatitude(), location.getLongitude(), location.getAccuracy(), elapsedTimeInMillis, Qvalue
double predictedLat = kalmanFilter.get_lat();
double predictedLng = kalmanFilter.get_lng();
Location predictedLocation = new Location("");//provider name is unecessary
predictedLocation.setLatitude(predictedLat);//your coords of course
predictedLocation.setLongitude(predictedLng);
float predictedDeltaInMeters = predictedLocation.distanceTo(location);
if(predictedDeltaInMeters > 60){
Log.d(TAG, "Kalman Filter detects mal GPS, we should probably remove this from track");
kalmanFilter.consecutiveRejectCount += 1;
if(kalmanFilter.consecutiveRejectCount > 3){
kalmanFilter = new KalmanLatLong(3); //reset Kalman Filter if it rejects more than 3 times in raw.
}
kalmanNGLocationList.add(location);
return false;
}else{
kalmanFilter.consecutiveRejectCount = 0;
}
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,BMNBO'JMUFSͰϑΟϧλʔ͢Δ
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,BMNBO'JMUFSͰϑΟϧλʔ͢Δ
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RunKeeper
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Nike+
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Nike+
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όοςϦʔ
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時間（秒） 距離（m) GPS個数 バッテリー
（スタート時）
バッテリー
（ゴール） 消費量
42km走った
場合
5時間走った
場合
Nexus6 Low
Battery
(every 5m)
1968 5710.0 790 16% 12% 4% 29.6% 36.6%
Nexus6p Mid
Battery
(every 1m)
1785 5738.8 1349 50% 48% 2% 14.7% 20.1%
Nexus6 Low
Battery
(every 5m)
1497 4583.8 581 22% 20% 2% 18.4% 24%
Nexus6p
High Battery
(every 5m)
1684 5036.0 675 98% 95% 3% 25.1% 32%
ɺLNͰͷফඅྔ
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όοςϦʔྔͷऔಘ
private BroadcastReceiver batteryInfoReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context ctxt, Intent intent) {
int batteryLevel = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
int scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
float batteryLevelScaled = batteryLevel / (float)scale;
batteryLevelArray.add(Integer.valueOf(batteryLevel));
batteryLevelScaledArray.add(Float.valueOf(batteryLevelScaled));
batteryScale = scale;
}
};
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όοςϦʔྔʹΑͬͯ$SJUFSJBΛม͑Δ
.JOJNVN%JTUBODFͱ.JOJNVN5JNFม͑ͯ(14νοϓ͕ফඅ͢ΔΤωϧΪʔಉ
͡ɻҐஔใΛड͚औ͔ͬͯΒͷॲཧʹΤωϧΪʔΛ͍ͬͯΔ߹ʢαʔόʔͷૹ৴ͳͲʣ
ɺ.JOJNVN%JTUBODFͱ.JOJNVN5JNFͷΛେ͖͘͢Δɻ
όοςϦʔྔΛҙࣝͨ͠ઃܭ
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setPowerRequirement(Criteria.POWER_HIGH);
criteria.setAltitudeRequired(false);
criteria.setSpeedRequired(true);
criteria.setCostAllowed(true);
criteria.setBearingRequired(false);
//API level 9 and up
criteria.setHorizontalAccuracy(Criteria.ACCURACY_HIGH);
criteria.setVerticalAccuracy(Criteria.ACCURACY_HIGH);
Integer gpsFreqInMillis = 1000;
Integer gpsFreqInDistance = 5; // in meters
locationManager.addGpsStatusListener(this);
locationManager.requestLocationUpdates(gpsFreqInMillis,
gpsFreqInDistance,
criteria, this, null);
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時間
（秒）
距離（m) GPS個数 バッテリー
（スタート時）
バッテリー
（ゴール） 消費量
42km走った
場合
5時間走った
場合
Nexus6p Mid
Battery (every
1m, 1sec)
1785 5738.8 1349 50% 48% 2% 14.7% 20.1%
Nexus6p High
Battery (every
5m, 1sec)
1684 5036.0 675 98% 95% 3% 25.1% 32%
.JOJNVN%JTUBODFͱ.JOJNVN5JNFม͑ͨ߹ͷόοςϦʔফඅྔ
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ٱੑʹ͍ͭͯ
ʔʼଓ͖࠙ձͰʂ
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Blog
medium.com/@mizutory/
github.com/mizutori/AndroidLocationStarterKit
Code
[email protected]
@mizutory
Twitter
www.goldrushcomputing.com