獲取位置資訊主要通過GPS和網路位置兩種方法，優先順序還是GPS，有點就不多說了，下面說一下我做的方法及附程式碼，有疑問可在下方留言。

       思路便是GPS優先，但在GPS訊號弱的情況下采取拿網路位置來彌補的方法，儘量做到次次上傳都有位置資訊傳上去。

private String getLngAndLat(Context context) {

    LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
    if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {  //從gps獲取經緯度
        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if (location != null) {
            latitude = location.getLatitude();
            longitude = location.getLongitude();
        } else {//當GPS訊號弱沒獲取到位置的時候又從網路獲取
            return getLngAndLatWithNetwork();
        }
    } else {    //從網路獲取經緯度
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);
        Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
        if (location != null) {
            latitude = location.getLatitude();
            longitude = location.getLongitude();
        }
    }
    return longitude + "," + latitude;
}

//從網路獲取經緯度
public String getLngAndLatWithNetwork() {
    double latitude = 0.0;
    double longitude = 0.0;
    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);
    Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
    if (location != null) {
        latitude = location.getLatitude();
        longitude = location.getLongitude();
    }
    return longitude + "," + latitude;
}