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。
I “模糊定位”权限下的兼容策略
pod 'AMapLocation', '2.6.7'
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 setuprequestLocationWithAMapLocatingCompletionBlock:completionBlock];
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
[locationManager requestAlwaysAuthorization];
}
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);
}
}
}
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