MapView位置不起作用（xcode 6中的ios7，SDK ios8）？

Question

我安裝了XCODE 6版本的形式為developer.apple（我認為是最終版本），我在那里在那里工作我的項目（iOS 7項目），但顯然帶來了iOS 8 SDK，我真的不知道這是否會影響項目。

我有一個mapview，我想顯示用戶位置，但這是不可能的！ 碼：

@property (nonatomic, strong) CLLocationManager *manager;

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.manager requestAlwaysAuthorization];
    [self.manager requestWhenInUseAuthorization];
    [self.mapview setDelegate:self];
    self.mapview.showsUserLocation = YES;


    [self.mapview setCenterCoordinate:self.mapview.userLocation.location.coordinate animated:YES];
}

我沒有看到“ App想使用您的當前位置...”，該地圖視圖顯示了非洲的一些地方，沒有圖釘或其他任何東西。

Answer 1

您必須初始化/分配CLLocationManager *manager

像這樣的東西：

    // Create the core location manager object
        _locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;


    // for iOS 8, specific user level permission is required,
    // "when-in-use" authorization grants access to the user's location
    //
    // important: be sure to include NSLocationWhenInUseUsageDescription along with its
    // explanation string in your Info.plist or startUpdatingLocation will not work.
    //
    if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
        [self.locationManager requestWhenInUseAuthorization];
    }
    [self.locationManager startUpdatingLocation];

查看Apple示例https://developer.apple.com/library/prerelease/ios/samplecode/LocateMe/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007801