Trying to start MapKit location updates without prompting for location authorization. Must call -[CL

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(2)对于Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.问题
在IOS8中定位功能新增了两个方法:

  • (void)requestWhenInUseAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0);- (void)requestAlwaysAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0);

这两个新增的方法导致,之前写的程序在iOS8运行会出现,定位功能无法正常使用
这样让iOS8正常使用定位功能呢?
<1>你需要在info.plist表里面添加两条变量

在Info.plist中加入两个缺省没有的字段
* NSLocationAlwaysUsageDescription
* NSLocationWhenInUseUsageDescription
这两个字段没什么特别的意思,就是自定义提示用户授权使用地理定位功能时的提示语。


这里写图片描述

这样在写代码:

CLLocationManager  *locationManager = [[CLLocationManager alloc]init];    locationManager.delegate = self;    [locationManager requestAlwaysAuthorization];    locationManager.desiredAccuracy = kCLLocationAccuracyBest;    locationManager.distanceFilter = kCLDistanceFilterNone;    [locationManager startUpdatingLocation];

这是在调用代理

  • (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status { switch (status) { case kCLAuthorizationStatusNotDetermined: if ([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) { [locationManager requestWhenInUseAuthorization]; } break; default: break; }}

这样就Ok了,就会弹出原来的提示框

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