IOS8 CLLocationManager 调用requestWhenInUseAuthorization

在 iOS 8 上编译会出现以下 log ：

Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.

经搜索得到解决方法如下：

1、修改info.plist：

    新增key值为NSLocationWhenInUseUsageDescription 或 NSLocationAlwaysUsageDescription（这里，我将两个都加了进去），一定要设置内容，不然不能调用授权。（个别就是info.plist中还需要包含Supported interface orientations 这个Array字段。然后运行就解决了）。

2、修改代码：

    在调用方法startUpdatingLocation的前面加上一句

1  if([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {

2    [locationManager requestWhenInUseAuthorization];

3  }

============================

3、博客原文修改方法：

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locationManager = [[CLLocationManager alloc] init];         locationManager.delegate = self;         locationManager.desiredAccuracy=kCLLocationAccuracyBest;         if([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {             [locationManager requestWhenInUseAuthorization];         }         [locationManager startUpdatingLocation];

 

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- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {       if (         ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)] && status != kCLAuthorizationStatusNotDetermined && status != kCLAuthorizationStatusAuthorizedWhenInUse) ||         (![locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)] && status != kCLAuthorizationStatusNotDetermined && status != kCLAuthorizationStatusAuthorized)         ) {           NSString *message = @"您的手機目前並未開啟定位服務，如欲開啟定位服務，請至設定->隱私->定位服務，開啟本程式的定位服務功能";         UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"無法定位" message:message delegate:nil cancelButtonTitle:@"確定" otherButtonTitles: nil];         [alertView show];       }else {           [locationManager startUpdatingLocation];     } }