iOS小技能：模糊定位适配、处理首次定位引导授权、判断经纬度是否在国内

引言

iOS14新增了精确定位和模糊定位的概念，用户可以手动选择，模糊定位的误差约 500m 。可以根据实际功能判断是否可以接受用户选择模糊定位。

iOS14新增用户大致位置选项可供用户选择的原因是大多数 App 实际上并不需要获取用户到用户最准确的定位信息。

iOS14 授权弹窗新增的Precise的开关默认会选中精确位置。用户通过这个开关可以进行更改，当把这个值设为 On 时，地图上会显示精确位置；切换为Off时，将显示用户的大致位置。

应用场景：

1. 商户进件的经营地址定位（商户详情的重新定位、进件信息编辑时的商户地址定位）

2. 支付设备终端的定位信息更新

I 模糊定位适配

​​用户可以通过在 “隐私设置” 中设置来开启精确定位，但是若用户不愿意开启。这个时候，iOS14 在 CLLocationManager 新增两个方法用于向用户申请临时开启一次精确位置权限。​​

1.1 plist配置

NSLocationTemporaryUsageDescriptionDictionary

<key>NSLocationTemporaryUsageDescriptionDictionary</key>
     <dict>
     <key>purposeKey4changeInfo</key>

     <string>此app需要精确的定位信息，以便于更好的为你服务. </string>

    </dict>

1.2 设置 locationAccuracyMode

locationAccuracyMode设置为AMapLocationFullAndReduceAccuracy/AMapLocationFullAccuracy

if (@available(iOS 14.0, *)) {
        self.location.locationAccuracyMode = AMapLocationFullAndReduceAccuracy;
    } else {
        // Fallback on earlier versions

1.3 实现代理方法

/**
 *  @brief 当plist配置NSLocationTemporaryUsageDescriptionDictionary且desiredAccuracyMode设置CLAccuracyAuthorizationFullAccuracy精确定位模式时，如果用户只授权模糊定位，会调用代理的此方法。此方法实现调用申请临时精确定位权限API即可：
 *  [manager requestTemporaryFullAccuracyAuthorizationWithPurposeKey:@"PurposeKey" completion:^(NSError *error){
 *     if(completion){
 *        completion(error);
 *     }
 *  }]; (必须调用,不然无法正常获取临时精确定位权限)
 *  @param manager 定位 AMapLocationManager 类。
 *  @param locationManager 需要申请临时精确定位权限的locationManager。
 *  @param completion 临时精确定位权限API回调结果，error: 直接返回系统error即可。
 *  @since 2.6.7
 */
- (void)amapLocationManager:(AMapLocationManager *)manager doRequireTemporaryFullAccuracyAuth:(CLLocationManager*)locationManager completion:(void(^)(NSError *error))completion;

{
   if(@available(iOS 14.0,*)){

       [locationManager requestTemporaryFullAccuracyAuthorizationWithPurposeKey:@"purposeKey4changeInfo" completion:^(NSError * _Nullable error) {

          if(completion){
             completion(error);
          }

      }];
   }
}

1.4 处理定位权限状态改变的回调函数

如果定位精度权限变更为精确的时候，再次更新定位信息

/**
 记录当前是否向用户申请临时开启一次精确位置权限，用于【如果定位精度权限变更为精确的时候，再次更新定位信息】

 */
@property (assign, nonatomic) BOOL isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey;
/**
 存储获取定位信息的回调
 */
@property (nonatomic, copy) AMapLocatingCompletionBlock block;


/**
 *  @brief 定位权限状态改变时回调函数。注意：iOS14及之后版本回调
 *  @param manager 定位 AMapLocationManager 类。
 *  @param locationManager  定位CLLocationManager类，可通过locationManager.authorizationStatus获取定位权限，通过locationManager.accuracyAuthorization获取定位精度权限
 */
- (void)amapLocationManager:(AMapLocationManager *)manager locationManagerDidChangeAuthorization:(CLLocationManager*)locationManager{

    //

//    - 如果定位精度权限变更为精确的时候，再次更新定位信息

    if (@available(iOS 14.0, *)) {
        if(    locationManager.accuracyAuthorization == CLAccuracyAuthorizationFullAccuracy){


            if(       self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey == YES){

                self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey = NO;


                [self.location requestLocationWithReGeocode:YES completionBlock:^(CLLocation *location, AMapLocationReGeocode *regeocode, NSError *error) {

                    [SVProgressHUD dismiss];


                    if(self.block){

                        self.block(location,regeocode,error);


                    }
                }];



            }





        }
    } else {
        // Fallback on earlier versions

• 效果

• ​​定位SDK适配文档详情请见： ​​

在iOS14之后的SDK新增的API

II 引导用户授权，并监听状态变化。

定位之前，先检测权限，如果是首次安装app，第一次使用定位时，调用​​requestAlwaysAuthorization​​申请定位权限，引导用户授权，并监听状态变化。

不推荐使用高德SDK的API处理，推荐定位之前使用原生API自己处理，这样也方便以后切换腾讯SDK。

2.1 使用高德SDK的API处理（不推荐）

检测状态

if(![QCTLocationServiceUtil isHasLocationAuthorityWithisShowAlert:YES]){
        return ;

    }

    [self

引导用户授权

- (void)amapLocationManager:(AMapLocationManager *)manager doRequireLocationAuth:(CLLocationManager*)locationManager
{
//    locationManager.delegate = self;// 设置代理将无回调requestLocationWithReGeocode
    // 判断kCLAuthorizationStatusNotDetermined时设置isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey
    self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey = YES;// 区分首次使用

监听状态变化

- (void)amapLocationManager:(AMapLocationManager *)manager locationManagerDidChangeAuthorization:(CLLocationManager*)locationManager{

    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

    NSLog(@"amapLocationManager locationManagerDidChangeAuthorization:%d",status);


//    - 如果定位精度权限变更为精确的时候，再次更新定位信息

    if (@available(iOS 14.0, *)) {
        if(    locationManager.accuracyAuthorization == CLAccuracyAuthorizationFullAccuracy){


            if(       self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey == YES){// 首次请求

                self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey = NO;


                [self.location requestLocationWithReGeocode:YES completionBlock:^(CLLocation *location, AMapLocationReGeocode *regeocode, NSError *error) {

                    [SVProgressHUD dismiss];


                    if(self.block){

                        self.block(location,regeocode,error);


                    }
                }];



            }





        }
    } else {
        // Fallback on earlier versions

2.2 原生API处理首次定位（推荐）

检测定位权限

weak __typeof__(self) weakSelf = self;

    [QCTLocationServiceUtil isHasLocationAuthorityWithisShowAlert:YES block:^(id  _Nonnull sender) {
        [weakSelf setuprequestLocationWithAMapLocatingCompletionBlock:completionBlock];// 请求定位

封装定位权限检查

BOOL)isHasLocationAuthorityWithisShowAlert:(BOOL)showAlert block:(void (^)(id sender))block {


    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
    //应用程序的定位权限被限制
    //拒绝获取定位
    if (status == kCLAuthorizationStatusRestricted || status == kCLAuthorizationStatusDenied) {
        NSLog(@"NSLog 没有获取地理位置的权限");
        if (showAlert) {
            [LBAlertController showAlertTitle:@"无法使用定位" content:@"请在iPhone的\"设置-隐私-定位\"中允许访问地理位置。" cancelString:@"取消" cancleBlock:nil sureString:@"去设置" sureBlock:^{

                // 需要在info.plist中添加 URL types 并设置一项URL Schemes为prefs  IOS10 以后不起作用
                    if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]){
                    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
                }
            } currentController:[QCT_Common getCurrentVC]];
        }
        return NO;

    }else if (status == kCLAuthorizationStatusNotDetermined){//用户尚未对该应用程序作出选择,安装之后第一次使用
//        CLLocationManager *manager = [[CLLocationManager alloc] init];
        CLLocationManager *manager = ProjectMethod.shareProjectMethod.locationManager;


        ProjectMethod.shareProjectMethod.block4location = block;// 监听状态变化时，执行的block

        [manager requestAlwaysAuthorization];

//
        return NO;

    }

    NSLog(@" 获取位置权限正常==============");

    if(block){// 3. 执行允许之后的定位操作
        block(nil);
    }
    return YES;


}

监听状态变化

- (CLLocationManager *)locationManager{

    if(_locationManager == nil){
        _locationManager = [CLLocationManager new];

        _locationManager.delegate = self;

    }
    return _locationManager;

}

- (void)locationManagerDidChangeAuthorization:(CLLocationManager *)manager API_AVAILABLE(ios(14.0), macos(11.0), watchos(7.0), tvos(14.0)){

    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

    NSLog(@"locationManagerDidChangeAuthorization:%d",status);


    if(status ==kCLAuthorizationStatusAuthorizedAlways|| status == kCLAuthorizationStatusAuthorizedWhenInUse){// 3 ||4

        if(self.block4location){
            self.block4location(nil);

        }

    }



}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status API_DEPRECATED_WITH_REPLACEMENT("-locationManagerDidChangeAuthorization:", ios(4.2, 14.0), macos(10.7, 11.0), watchos(1.0, 7.0), tvos(9.0, 14.0)){


//    nsl
    //kCLAuthorizationStatusAuthorizedAlways
//    kCLAuthorizationStatusAuthorizedWhenInUse

    if(status ==kCLAuthorizationStatusAuthorizedAlways|| status == kCLAuthorizationStatusAuthorizedWhenInUse){//3 ||4

        if(self.block4location){
            self.block4location(nil);

        }

    }

}

III 单次定位

定位SDK推荐选择腾讯，因为高德的反地理编码库不准确（没有实时更新）

3.1 腾讯SDK(TencentLBS)

/**
 * 设置用户是否同意隐私协议政策
 * <p>调用其他接口前必须首先调用此接口进行用户是否同意隐私政策的设置，传入YES后才能正常使用定位功能，否则TencentLBSLocationManager初始化不成功，返回nil，定位功能均无法使用</p>
 * @param isAgree 是否同意隐私政策
 */
+ (void)setUserAgreePrivacy:(BOOL) isAgree;
/**
 *  单次定位
 *
 *  该方法为下面方法的一层封装。
 *  level默认是TencentLBSRequestLevelPoi
 *  timeout默认是10s
 */
- (BOOL)requestLocationWithCompletionBlock:(TencentLBSLocatingCompletionBlock)completionBlock;



// 先执行代理方法tencentLBSDidChangeAuthorization再执行此回调
/**
 * 当前属于模糊定位状态时，通过该接口请求暂时的完全定位精度的权限
 * @param purposeKey 需要在info.plist中配置NSLocationTemporaryUsageDescriptionDictionary key值和对应的申请该权限的描述理由
 * @param completion 在弹框让用户选择后的用户的反馈，如果用户授予该权限，block中的参数为nil，如果未授予，block中的参数将为PurposeKey对于的key的描述（如PurposeKey=TemporaryPurposKey_1）
 */
- (void)requestTemporaryFullAccuracyAuthorizationWithPurposeKey:(NSString *)purposeKey
                                                     completion:(void (^)(NSError

初始化locationManager

- (TencentLBSLocationManager *)locationManager{

    if(_locationManager == nil){
        _locationManager = [[TencentLBSLocationManager alloc] init];


        [self configLocationManager];


    }


    return _locationManager;


}

- (void)configLocationManager {
    [TencentLBSLocationManager setUserAgreePrivacy:YES];

  _locationManager = [[TencentLBSLocationManager alloc] init];

    [_locationManager setDelegate:self];
    [_locationManager setPausesLocationUpdatesAutomatically:NO];
//    [_locationManager setAllowsBackgroundLocationUpdates:YES];
    [_locationManager setApiKey:@"-----6JBM3"];//
//
    //若获取的drLocatin中带有地址信息，可
    [_locationManager setRequestLevel:TencentLBSRequestLevelAdminName];


//处理首次定位,原生API处理首次定位（推荐）QCTLocationServiceUtil isHasLocationAuthorityWithisShowAlert:YES block
    //不使用SDK的方法
//    CLAuthorizationStatus authorizationStatus= [CLLocationManager authorizationStatus];
//    if (authorizationStatus == kCLAuthorizationStatusNotDetermined) {
//        [self.locationManager requestWhenInUseAuthorization];
//    }
//

单次定位

- (void)SingleLocation:(TencentLBSLocatingCompletionBlock)completionBlock{


__weak __typeof__(self) weakSelf = self;



//处理首次定位
[QCTLocationServiceUtil isHasLocationAuthorityWithisShowAlert:YES block:^(id  _Nonnull sender) {

    //模糊定位适配
    [weakSelf setuprequestLocationWithCompletionBlock:completionBlock];


}];




}

- (void)setuprequestLocationWithCompletionBlock:(TencentLBSLocatingCompletionBlock)completionBlock{



    self.block =completionBlock;// 用于适配iOS14


    [SVProgressHUD showWithStatus:@"定位中.."];

    //1.iOS 模糊定位适配
//    可以使用以下方法判断当前应用的定位精度权限，业务可根据相应的值做出不同的操作：
    if (@available(iOS 14.0, *)) {
        TencentLBSAccuracyAuthorization accAuthor = [TencentLBSLocationManager accuracyAuthorization];

        if(accAuthor == TencentLBSAccuracyAuthorizationReducedAccuracy){

    //        当前属于模糊定位状态时，通过该接口请求暂时的完全定位精度的权限

            //权限的变更会通过TencentLBSLocationManagerDelegate中的 - (void)tencentLBSDidChangeAuthorization:(TencentLBSLocationManager *)manager方法回调

                                self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey = YES;
                    // 记录当前是否向用户申请临时开启一次精确位置权限，用于【如果定位精度权限变更为精确的时候，再次更新定位信息】

            [self.locationManager requestTemporaryFullAccuracyAuthorizationWithPurposeKey:(  @"purposeKey4changeInfo") completion:^(NSError * _Nonnull err) {


                // * @param completion 在弹框让用户选择后的用户的反馈，如果用户授予该权限，block中的参数为nil，如果未授予，block中的参数将为PurposeKey对于的key的描述（如PurposeKey=TemporaryPurposKey_1）
// 先执行代理方法tencentLBSDidChangeAuthorization再执行此回调
                if(!err){//未授予,则直接定位


                    [self requestLocation];


                }


            }];

            return ;
        }



    }
    // 2. 调用单次定位

    [self requestLocation];

}

- (void)requestLocation{
//    [self configLocationManager ];


    [self.locationManager requestLocationWithCompletionBlock:
        ^(TencentLBSLocation *location, NSError *error) {
            NSLog(@"%@, %@, %@", location.location, location.name, location.address);
        [SVProgressHUD dismiss];

        if(self.block){


            self.block(location,error);



        }

        }];




}

/**
 *  定位权限状态改变时回调函数
 *  @param manager 定位 TencentLBSLocationManager 类，由此访问authorizationStatus,accuracyAuthorization
 */
- (void)tencentLBSDidChangeAuthorization:(TencentLBSLocationManager *)manager{

    //    - 如果定位精度权限变更为精确的时候，再次更新定位信息

    if (@available(iOS 14.0, *)) {
        if(    self.locationManager.accuracyAuthorization == CLAccuracyAuthorizationFullAccuracy){




            if(       self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey == YES){// 首次请求

                self.isrequestTemporaryFullAccuracyAuthorizationWithPurposeKey = NO;

                // 获取定位
                [self requestLocation];


            }







        }
    } else

3.2 高德SDK

'AMapLocation', '2.6.7'

- (void)setuprequestLocationWithAMapLocatingCompletionBlock:(AMapLocatingCompletionBlock)completionBlock{

    self.block =completionBlock;
    self.location = [[AMapLocationManager alloc]init];
    self.location.delegate = self;

    [SVProgressHUD showWithStatus:@"定位中.."];

    if (@available(iOS 14.0, *)) {
        self.location.locationAccuracyMode = AMapLocationFullAndReduceAccuracy;
    } else {
        // Fallback on earlier versions
    }

    [self.location setDesiredAccuracy:kCLLocationAccuracyHundredMeters];
    //   定位超时时间，最低2s，此处设置为2s
    self.location.locationTimeout = 2;
    //   逆地理请求超时时间，最低2s，此处设置为2s
    self.location.reGeocodeTimeout = 2;

    [self.location requestLocationWithReGeocode:YES completionBlock:^(CLLocation *location, AMapLocationReGeocode *regeocode, NSError *error) {

            [SVProgressHUD dismiss];


        if(completionBlock){

            completionBlock(location,regeocode,error);


        }
    }];

}

IV 判断经纬度是否在国内

TencentLBSLocationUtils
/**
 *  判断经纬度是否在国内
 *
 */
+ (BOOL) isInRegionWithLatitude:(double)latitude longitude:(double)longitude;

封装

/**

 根据经纬度判断 是否在大陆地区
 */
+ (BOOL)inChineseMainlandWithCLLocation:(CLLocation *)location province:(NSString *)province{
    //coordinate.longitude

    if([TencentLBSLocationUtils isInRegionWithLatitude:location.coordinate.latitude longitude:location.coordinate.longitude]){



//    if(AMapLocationDataAvailableForCoordinate(location.coordinate)){//当前位置在大陆、港澳地区
        //香港特别行政区
//        澳门特别行政区
        /////省/直辖市
//        @property (nonatomic, copy) NSString *province;

        if([province isEqualToString:@"香港特别行政区"] || [province isEqualToString:@"澳门特别行政区"]){

            return NO;


        }else{
            return YES;

        }



    }else{//其他地区

        return NO;

    }
    return YES;
}

see also

iOS小技能：图片上传(优化图片上传的权限检测,引导设置相机权限和相册权限。）

• ​​高德​​
• ​​百度iOS_14_beta版适配说明​​