Android利用自带的位置服务，获取当前位置信息

    /**
     * 初始化地理位置
     */
    @SuppressLint("MissingPermission")
    fun initLocation() {
        Thread(Runnable {
            val serviceString = Context.LOCATION_SERVICE// 获取的是位置服务
            val locationManager = getSystemService(serviceString) as LocationManager
            val provider = LocationManager.NETWORK_PROVIDER// 指定LocationManager的定位方法
            val location = locationManager.getLastKnownLocation(provider)
            var address = getAddress(location)
            runOnUiThread {
                tvLocation.text = address
            }
        }).start()
    }
    /**
     * 通过经纬度获取位置信息
     */
    private fun getAddress(location: Location?): String {//一定要异步，否则获取不到
        //用来接收位置的详细信息
        var result: List<Address>? = null
        var addressLine = ""
        try {
            if (location != null) {
                val gc = Geocoder(this, Locale.getDefault())
                result = gc.getFromLocation(location.latitude, location.longitude, 1)
                if (result.isNotEmpty()) {
                    try {
                        addressLine = result[0].getAddressLine(0) + result[0].getAddressLine(1)
                    } catch (e: java.lang.Exception) {
                        addressLine = result[0].getAddressLine(0)
                    }
                }
            }
            addressLine=addressLine.replace("null","")
        } catch (e: Exception) {
            e.printStackTrace()
        }
        return addressLine
    }