locationManager.getLastKnownLocation() 返回 null

locationManager.getLastKnownLocation() return null(locationManager.getLastKnownLocation() 返回 null)

问题描述

我不明白为什么 locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); 返回位置 null.我给予了所有许可，但它的 reutning null 除外.

i dont understand why locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); return the location null. I gave all permission but its reutning null.

          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();
                    }
                }
            }
        }

推荐答案

我也遇到了同样的问题.这是因为我的设备没有存储最后一个已知位置.我只是去谷歌地图并用 GPS 精确定位我的位置，然后为 getLastKnownLocation() 返回一个值

I had this exact same problem. It was because my device was not storing a last known location. I simply went on to Google Maps and pinpointed my location with GPS, then a value was returned for getLastKnownLocation()

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