shows user location在iOS8上不能使用地图定位

在xcode6中 苹果地图得定位方法修改了，以前得不能用了

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

解决办法：

在Supporting Files下得XXX.info.plis里面添加NSLocationAlwaysUsageDescription 或 NSLocationWhenInUseDescription 两个String字段，value可以为空，也可以设置YES，不过我得问题还是不能解决，最终还是找到得了问题所在，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.

代码处理：

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

另外一处：

- (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 = @"您的手机目前未开启定位服务，如欲开启定位服务，请至设定开启定位服务功能";
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"无法定位" message:message delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];
[alertView show];

}else {

[locationManager startUpdatingLocation];
}
}

上面那行是 iOS 8 以上，第二行是 iOS 7 以下， kCLAuthorizationStatusAuthorized 在 iOS 8 完全不能使用。

別的地方：

CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

if (status == kCLAuthorizationStatusAuthorizedWhenInUse || status == kCLAuthorizationStatusAuthorized) {

// 开始定位

}else {

// 提示警告
}

代码修改片段来源于此：http://blog.dreambreakerx.com/tag/ios/