好的,这是一个奇怪的,但我可能会遗漏一些显而易见的事情。我目前正在使用此功能访问用户位置:
public String[] getGeoCoords() {
String[] geoCoords = new String[2];
String mprovider = locationManager.getBestProvider(criteria, false);
if (mprovider != null && !mprovider.equals("")) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return geoCoords;
}
Location loc = locationManager.getLastKnownLocation(mprovider);
if(loc== null)
loc = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (loc == null)
loc = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
if (loc == null)
loc = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
geoCoords[0] = String.valueOf(loc.getLatitude());
geoCoords[1] = String.valueOf(loc.getLongitude());
}
return geoCoords;
}
这将按预期返回位置,但访问用户位置时通常获得的图标不会显示在状态栏中。
在我的清单中我有
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
有什么想法吗?
答案 0 :(得分:0)
您正在访问getLastKnownLocation()
,它会直接返回上一个可用位置,否则返回null。
当您请求像这样的位置更新时,您正在谈论的图标就会出现..
LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() {
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
所以当它搜索卫星时,它会显示gps图标,当它找到一个onLocationChanged(Location location)
时,将会调用捕获的位置。