public class GPSUtils {
private static GPSUtils instance;
private Context mContext;
private LocationManager locationManager;
private GPSUtils(Context context) {
this.mContext = context;
}
public static GPSUtils getInstance(Context context) {
if (instance == null) {
instance = new GPSUtils(context);
}
return instance;
}
/**
* 获取经纬度
*
* @return
*/
public String getLngAndLat(OnLocationResultListener onLocationResultListener) {
double latitude = 0.0;
double longitude = 0.0;
mOnLocationListener = onLocationResultListener;
String locationProvider = null;
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
//获取所有可用的位置提供器
List<String> providers = locationManager.getProviders(true);
if (providers.contains(LocationManager.GPS_PROVIDER)) {
//如果是GPS
locationProvider = LocationManager.GPS_PROVIDER;
} else if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
//如果是Network
locationProvider = LocationManager.NETWORK_PROVIDER;
} else {
Intent i = new Intent();
i.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(i);
return null;
}
//获取Location
Location location = locationManager.getLastKnownLocation(locationProvider);
if (location != null) {
//不为空,显示地理位置经纬度
if (mOnLocationListener != null) {
mOnLocationListener.onLocationResult(location);
}
}
//监视地理位置变化
locationManager.requestLocationUpdates(locationProvider, 3000, 1, locationListener);
return null;
}
public LocationListener locationListener = new LocationListener() {
// Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
// Provider被enable时触发此函数，比如GPS被打开
@Override
public void onProviderEnabled(String provider) {
}
// Provider被disable时触发此函数，比如GPS被关闭
@Override
public void onProviderDisabled(String provider) {
}
//当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
@Override
public void onLocationChanged(Location location) {
if (mOnLocationListener != null) {
mOnLocationListener.OnLocationChange(location);
}
}
};
public void removeListener() {
locationManager.removeUpdates(locationListener);
}
private OnLocationResultListener mOnLocationListener;
public interface OnLocationResultListener {
void onLocationResult(Location location);
void OnLocationChange(Location location);
}
}
