学生网站作品建设一个网站主要受哪些因素的影响

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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};@Overridepublic 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() {@Overridepublic void onGranted(@NonNull List<String> permissions, boolean allGranted) {if (allGranted) {initData();}}@Overridepublic 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<serviceandroid:name=".utils.LocationService"android:enabled="true"android:exported="false" />

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;}@Overridepublic IBinder onBind(Intent intent) {return null;}@SuppressLint("MissingPermission")@Overridepublic 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@Overridepublic void onLocationChanged(Location location) {if (ObjectUtils.isNotEmpty(location)) {toGeocoder(location);}}// 状态改变时@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {}// 提供者可以使用时@Overridepublic void onProviderEnabled(String provider) {}// 提供者不可以使用时@Overridepublic 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servicee.printStackTrace();}}@SuppressLint("MissingPermission")@Overridepublic 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）。