我已按照本教程http://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/显示弹出如果GPS未启用并获取用户当前位置。GPS启用后获取用户当前的经纬度 - Android
这里是广播接收器当我通过设置对话框或从下拉菜单中启用GPS,它会监听启用禁用状态
private BroadcastReceiver mGpsSwitchStateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
gps = new GPSTracker(getActivity());
if(gps.canGetLocation()){
Log.d("Your Location", "latitude:" + gps.getLatitude() + ", longitude: " + gps.getLongitude());
Toast.makeText(getActivity(), "GPS Switch", Toast.LENGTH_SHORT).show();
if(gps.getLatitude() != 0 && gps.getLongitude() != 0){
final CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(gps.getLatitude(),gps.getLongitude())) // Sets the center of the map to selected place
.zoom(15) // Sets the zoom
.build(); //
gMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
Toast.makeText(getActivity(), "GPS Switch Lat: "+gps.getLatitude()+" Long: "+gps.getLongitude(), Toast.LENGTH_SHORT).show();
}
} else {
if(!gps.isSettingDialogShown())
gps.showSettingsAlert();
}
}
}
};
的GPS。 GPSTracker类获取用户当前位置的定位服务,并检查在此代码片段
public Location getLocation() {
try {
locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network Enabled");
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS", "GPS Enabled");
if (locationManager != null) {
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (SecurityException e) {
e.printStackTrace();
}
return location;
}
问题:
首先,我不知道为什么广播接收器,接收动作两次;其次当在正常模式下,接收器的经纬度值保持为零,但在调试时有时会返回用户当前位置的值。
你能帮我做什么错吗?
https://stackoverflow.com/a/43082164/115145 – CommonsWare
使用谷歌Fused Location Api和位置设置,[检查此](http:///stackoverflow.com/questions/43138788/ask-user-to-turn-on-location/43139553#43139553) –
@CommonsWare我不明白我打开GPS后如何获得广播接收机的经纬度?在你的回答中,你说避免使用getLastKnownLocation(),那么使用什么而不是这个? –