Android 原生定位开发（解决个别手机定位失败问题）

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前言

在android开发中地图和定位是很多软件不可或缺的内容，这些特色功能也给人们带来了很多方便。定位一般分为三种发方案：即GPS定位、Google网络定位以及基站定位。

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本文分别介绍GPS定位、以及基于Google的网络Wifi定位的详细步骤，（小米手机获取位置信息locationManager.getLastKnownLocation(provider)的Location一直为空，查了资料换了种获取手机getProviders的方式就可以了）

一、实现步骤

一般来说我们实现原生定位的流程大概是：先判断有无权限》有权限启动一个LocationSrevice去获取定位》最后携带所需的定位信息返回，进行开发。

二、使用步骤

1.服务启动工具类

代码如下（示例）：大概步骤如下，权限请求可自定义开发关键的是LocationService

/**
 * 获取定位
 */
public class MyLocationManager implements LocationService.LocationCallBack {
    private Activity context;
    private OnLocationListener onLocationListener;
    private String[] stringsLocation = new String[]{Permission.ACCESS_FINE_LOCATION, Permission.ACCESS_COARSE_LOCATION};

    @Override
    public void Location_Return(double Location_latitude, double Location_longitude, String province, String city, String area, String featureName) {
        onLocationListener.OnLocation(Location_latitude, Location_longitude, province, city, area, featureName);
    }

    public interface OnLocationListener {
        void OnLocation(double Location_latitude, double Location_longitude, String province, String city, String area, String featureName);
    }

    public void setOnLocationListener(OnLocationListener onLocationListener) {
        this.onLocationListener = onLocationListener;
    }

    public MyLocationManager(@NonNull Activity context) {
        this.context = context;
        if (!XXPermissions.isGranted(context, stringsLocation)) {
            MessageDialog codeDialog = new MessageDialog(context, "位置信息权限使用说明", "为确保你能在******内使用位置信息******，******需要获取你的位置信息权限。允许后，你可以随时通过手机系统设置对授权进行管理。", "取消", "去授权");
            codeDialog.setCancelable(false);
            codeDialog.show();
            codeDialog.setOnSumbitTextCodeListener(() -> {
                doMainPermission();
                codeDialog.dismiss();
            });
            codeDialog.setOnCancelListener(() -> {
                codeDialog.dismiss();
            });
        } else {
            initData();
        }

    }

    private void doMainPermission() {
        XXPermissions.with(context).permission(stringsLocation).request(new OnPermissionCallback() {
            @Override
            public void onGranted(@NonNull List<String> permissions, boolean allGranted) {
                if (allGranted) {
                    initData();
                }
            }

            @Override
            public void onDenied(@NonNull List<String> permissions, boolean doNotAskAgain) {
                if (doNotAskAgain) {

                }
            }
        });
    }

    @SuppressLint("MissingPermission")
    private void initData() {
        // 创建 Service 实例
        LocationService myService = new LocationService();
        // 设置回调接口
        myService.setCallback(this);
        // 启动 Service 并执行操作
        Intent serviceIntent = new Intent(context, LocationService.class);
        context.startService(serviceIntent);
    }
}
/**-------------------------/
不要忘了注册
      

2.实现LocationService

代码如下（示例）：

/**
 * 获取定位服务
 */
public class LocationService extends Service {
    private LocationManager locationManager;
    private MyLocationListener myLocationListener;
    public static LocationCallBack mCallBack = null;

    public interface LocationCallBack {
        void Location_Return(double Location_latitude, double Location_longitude, String province, String city, String area, String featureName);
    }

    public void setCallback(LocationCallBack callback) {
        this.mCallBack = callback;
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @SuppressLint("MissingPermission")
    @Override
    public void onCreate() {
        super.onCreate();
        myLocationListener = new MyLocationListener();
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        try {
            GPSLocation();
        } catch (Exception e) {
            if (ObjectUtils.isNotEmpty(locationManager) && ObjectUtils.isNotEmpty(myLocationListener))
                locationManager.removeUpdates(myLocationListener); // 停止所有的定位服务
            stopSelf();  // 获取到经纬度以后，停止该service
        }
    }

    class MyLocationListener implements LocationListener {
        // 位置改变时获取经纬度
        @Override
        public void onLocationChanged(Location location) {
            if (ObjectUtils.isNotEmpty(location)) {
                toGeocoder(location);
            }
        }

        // 状态改变时
        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        // 提供者可以使用时
        @Override
        public void onProviderEnabled(String provider) {
        }

        // 提供者不可以使用时
        @Override
        public void onProviderDisabled(String provider) {
        }

    }

    @SuppressLint("MissingPermission")
    private Location getLastKnownLocation(LocationManager locationManager) {
        List<String> providers = locationManager.getProviders(true);
        Location bestLocation = null;
        for (String provider : providers) {
            Location l = locationManager.getLastKnownLocation(provider);
            if (l == null) {
                continue;
            }
            if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
                bestLocation = l;
            }
        }
        return bestLocation;
    }

    @SuppressLint("MissingPermission")
    private void GPSLocation() {
        Location location = getLastKnownLocation(locationManager);
        if (location != null) {
            //不为空,显示地理位置经纬度
            String longitude = "Longitude:" + location.getLongitude();
            String latitude = "Latitude:" + location.getLatitude();
            LogUtils.e("Location:" + longitude + latitude);
            toGeocoder(location);
        } else {
            LogUtils.e("Location:" + "Location为空");
            if (ObjectUtils.isNotEmpty(locationManager) && ObjectUtils.isNotEmpty(myLocationListener))
                locationManager.removeUpdates(myLocationListener); // 停止所有的定位服务
            stopSelf();  // 获取到经纬度以后，停止该service
        }
    }

    @SuppressLint("MissingPermission")
    private void toGeocoder(Location location) {
        String province = "";
        String city = "";
        String area = "";
        String featureName = "";
        try {
            Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
            List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
            if (ObjectUtils.isNotEmpty(addresses) && 0 < addresses.size()) {
                Address address = addresses.get(0);
                if (ObjectUtils.isNotEmpty(address)) {
                    // 获取省份（province）
                    province = address.getAdminArea();
                    // 获取城市（City）
                    city = address.getLocality();
                    // 获取区县（area）
                    area = address.getSubLocality();
                    //  获取详细地址
                    featureName = address.getFeatureName();
                    // 获取街道地址
                    String addressLine = address.getAddressLine(0);
                    // 打印详细地址信息
                    LogUtils.e("AddressInfo", "province: " + province);
                    LogUtils.e("AddressInfo", "City: " + city);
                    LogUtils.e("AddressInfo", "area: " + area);
                    LogUtils.e("AddressInfo", "FeatureName: " + featureName);
                    LogUtils.e("AddressInfo", "Address Line: " + addressLine);
                }
                mCallBack.Location_Return(location.getLatitude(), location.getLongitude(), province, city, area, featureName);
            }
            if (ObjectUtils.isNotEmpty(locationManager) && ObjectUtils.isNotEmpty(myLocationListener))
                locationManager.removeUpdates(myLocationListener); // 停止所有的定位服务
            stopSelf();  // 获取到经纬度以后，停止该service
        } catch (Exception e) {
            if (ObjectUtils.isNotEmpty(locationManager) && ObjectUtils.isNotEmpty(myLocationListener))
                locationManager.removeUpdates(myLocationListener); // 停止所有的定位服务
            stopSelf();  // 获取到经纬度以后，停止该service
            e.printStackTrace();
        }
    }

    @SuppressLint("MissingPermission")
    @Override
    public void onDestroy() {
        super.onDestroy();
        if (ObjectUtils.isNotEmpty(locationManager) && ObjectUtils.isNotEmpty(myLocationListener))
            locationManager.removeUpdates(myLocationListener); // 停止所有的定位服务
        stopSelf();
    }

}

该处使用原生定位获取经纬度、省市县等数据的详细步骤。

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总结

以上就是今天要讲的使用Android原生获取定位内容，本文详细展现了完整流程，希望对大家会有帮助，公司如果有实力大可不必如此，直接给第三方地图交钱就好了，毕竟人家又快又准（本文仅仅适用于只需经纬度或者地址信息的同学，有地图展现需求的只能想别的方法了哈哈）。