Android实现定位

简单定位工具类

/**
 *  简单定位工具类
 */
public class LocationUtil {
    private volatile static LocationUtil uniqueInstance;
    private LocationManager locationManager;
    private String locationProvider;
    private Location location;
    private Context mContext;

    private LocationUtil(Context context) {
        mContext = context;
        getLocation();
    }

    //采用Double CheckLock(DCL)实现单例
    public static LocationUtil getInstance(Context context) {
        if (uniqueInstance == null) {
            synchronized (LocationUtil.class) {
                if (uniqueInstance == null) {
                    uniqueInstance = new LocationUtil( context );
                }
            }
        }
        return uniqueInstance;
    }

    private void getLocation() {
        //1.获取位置管理器
        locationManager = (LocationManager) mContext.getSystemService( Context.LOCATION_SERVICE );
        //2.获取位置提供器，GPS或是NetWork
        List<String> providers = locationManager.getProviders( true );
        if (providers.contains( LocationManager.NETWORK_PROVIDER )) {
            //如果是网络定位
            locationProvider = LocationManager.NETWORK_PROVIDER;
        } else if (providers.contains( LocationManager.GPS_PROVIDER )) {
            //如果是GPS定位
            locationProvider = LocationManager.GPS_PROVIDER;
        } else {
            //没有可用的位置提供器
            return;
        }
        //3.获取上次的位置，一般第一次运行，此值为null
        Location location = locationManager.getLastKnownLocation( locationProvider );
        if (location != null) {
            setLocation( location );
        }
        // 监视地理位置变化，第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
        locationManager.requestLocationUpdates( locationProvider, 0, 0, locationListener );
    }

    private void setLocation(Location location) {
        this.location = location;
        String address = "纬度：" + location.getLatitude() + "经度：" + location.getLongitude();
    }

    //获取经纬度
    public Location showLocation() {
        return location;
    }

    // 移除定位监听
    public void removeLocationUpdatesListener() {
        if (locationManager != null) {
            uniqueInstance = null;
            locationManager.removeUpdates( locationListener );
        }
    }
    /**
     * LocationListern监听器
     * 参数：地理位置提供器、监听位置变化的时间间隔、位置变化的距离间隔、LocationListener监听器
     */

    LocationListener locationListener = new LocationListener() {
        /**
         * 当某个位置提供者的状态发生改变时
         */
        @Override
        public void onStatusChanged(String provider, int status, Bundle arg2) {
        }
        /**
         * 某个设备打开时
         */
        @Override
        public void onProviderEnabled(String provider) {
        }

        /**
         * 某个设备关闭时
         */
        @Override
        public void onProviderDisabled(String provider) {
        }

        /**
         * 手机位置发生变动
         */
        @Override
        public void onLocationChanged(Location location) {
            location.getAccuracy();//精确度
            setLocation( location );
        }
    };
}

调用工具类中的方法

private void getLocation() {
        Location location = LocationUtil.getInstance(this).showLocation();
        if (location != null) {
            String address = "纬度：" + location.getLatitude() + "经度：" + location.getLongitude();
            //获取维度信息
            lat = location.getLatitude() + "";
            //获取经度信息
            lng = location.getLongitude() + "";
        } else {
            //location is null
        }
    }

本文仅记录开发过程中遇到的问题及对应的解决方案，如有侵权可立即删除，同时欢迎大家批评与指正！！！

来源：CSDN

作者：抬頭觸摸那一抹陽光

链接：https://blog.csdn.net/weixin_44257960/article/details/103457019