我正在制作一个实时位置监听应用程序,我需要调用位置更新每 3 秒一次。
I use Fused https://developer.android.com/google/play-services/location.html地点。
我的间隔设置为 3 秒,但看起来该间隔的最小值是5秒。
Code:
public class GpsService extends Service implements ConnectionCallbacks, OnConnectionFailedListener, LocationListener {
private static int UPDATE_INTERVAL = 1000 * 3; // /< location update interval
private static int FASTEST_INTERVAL = 1000 * 3; // /< fastest location update interval
private static int DISPLACE_METERS = 10; // displacement in meters, not used atm
private LocationRequest mLocationRequest;
private LocationWrapper mLastLocation;
...
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
...
@Override
public void onLocationChanged(Location location) {
mLastLocation = new LocationWrapper(location);
log("onLocationChanged" + " " + mLastLocation.toString());
}
Logcat:
03-11 14:35:41.559: I/Locationing_GpsService(7410): Lat: 47.513878
03-11 14:35:41.559: I/Locationing_GpsService(7410): Lng: 19.0362011
03-11 14:35:41.559: I/Locationing_GpsService(7410): Accuracy: 21.213 meters
03-11 14:35:41.559: I/Locationing_GpsService(7410): ===================
03-11 14:35:46.554: I/Locationing_GpsService(7410): Lat: 47.5138783
03-11 14:35:46.554: I/Locationing_GpsService(7410): Lng: 19.0362064
03-11 14:35:46.554: I/Locationing_GpsService(7410): Accuracy: 17.32 meters
03-11 14:35:46.554: I/Locationing_GpsService(7410): ===================
03-11 14:35:51.569: I/Locationing_GpsService(7410): Lat: 47.5138752
03-11 14:35:51.569: I/Locationing_GpsService(7410): Lng: 19.0362068
03-11 14:35:51.569: I/Locationing_GpsService(7410): Accuracy: 15.0 meters
您可以看到logcat的日期,延迟5秒后:41, 46, 51我已经阅读了谷歌关于融合位置的文档,但我没有找到任何关于间隔最小值的信息。
有什么建议么?
E D I T:
Added getTime()
记录,并将其解析为Date
对象,你可以看到5秒延迟更清楚。
03-11 15:16:01.851: I/Locationing_GpsService(16747): Lat: 47.5138798
03-11 15:16:01.851: I/Locationing_GpsService(16747): Lng: 19.0362125
03-11 15:16:01.851: I/Locationing_GpsService(16747): Accuracy: 28.713 meters
03-11 15:16:01.851: I/Locationing_GpsService(16747): Time: Wed Mar 11 15:16:01 CET 2015
03-11 15:16:01.851: I/Locationing_GpsService(16747): =========================================================
03-11 15:16:06.946: I/Locationing_GpsService(16747): Lat: 47.5138765
03-11 15:16:06.946: I/Locationing_GpsService(16747): Lng: 19.0361987
03-11 15:16:06.946: I/Locationing_GpsService(16747): Accuracy: 20.902 meters
03-11 15:16:06.946: I/Locationing_GpsService(16747): Time: Wed Mar 11 15:16:06 CET 2015
03-11 15:16:06.946: I/Locationing_GpsService(16747): =========================================================
03-11 15:16:11.971: I/Locationing_GpsService(16747): Lat: 47.5138767
03-11 15:16:11.971: I/Locationing_GpsService(16747): Lng: 19.0361916
03-11 15:16:11.971: I/Locationing_GpsService(16747): Accuracy: 17.326 meters
03-11 15:16:11.971: I/Locationing_GpsService(16747): Time: Wed Mar 11 15:16:11 CET 2015
03-11 15:16:11.971: I/Locationing_GpsService(16747): =========================================================
编辑2:
权限:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />