MKMapView错误

Question

当我在地图下面创建故事板时，需要整个屏幕。这在下面的代码中是可以理解的，它使用视图的整个边界。然而，如果我做了一个正常的"init"，我失去了地图的功能！地图通常会放大到我的位置，还有一些其他的东西。当我使用init而不是initWithFrame时，地图不会到达我的位置。

 self.myMapView =[[MKMapView alloc]initWithFrame:self.view.bounds];

 self.myMapView.delegate=self;

我如何初始化地图，而不让它接管整个屏幕，如我的故事板所示。新来的iOS，谢谢你的帮助！

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//Setting up the location manger for finding the User's location
self.locationManager = [[CLLocationManager alloc]init];
self.locationManager.delegate = self;

//Check to see if they have Authorization to use to use location servieces
if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
{
    [self.locationManager requestAlwaysAuthorization];
}

    [self.locationManager startUpdatingLocation];


//Initialize the map and specifiy bounds
self.myMapView =[[MKMapView alloc]initWithFrame:self.view.bounds];

//Set the delegate to itself
self.myMapView.delegate=self;

//Set a standard mapview, Enable scrolling and zooming
self.myMapView.mapType = MKMapTypeStandard;
self.myMapView.scrollEnabled = YES;
self.myMapView.zoomEnabled = YES;
//specifcy resizing
self.myMapView.autoresizingMask = UIViewAutoresizingFlexibleWidth |        UIViewAutoresizingFlexibleTopMargin;

//show the User's location and set tracking mode
self.myMapView.showsUserLocation = YES;
self.myMapView.userTrackingMode = MKUserTrackingModeFollow;

//add the VIEW!!
[self.view addSubview:self.myMapView];

//Set up the UISearch Bar
self.mySearch = [[UISearchBar alloc]init];
self.mySearch.delegate  = self;

//Set the initial Text
self.mySearch.prompt = @"Enter Address or Use Current Location";

Answer 1

创建地图视图有两种方法。

1.在代码中创建。如您的示例所示。您需要设置地图视图框架。如果您首先需要创建UISearchBar，则应根据搜索栏的位置设置地图视图框架。看起来可能是这样的。

self.mySearch = [[UISearchBar alloc] init];
self.mySearch.frame = CGRectMake(0, 0, self.view.frame.size.width, 40);
//...
self.myMapView = [[MKMapView alloc] init];
self.myMapView.frame = CGRectMake(0, self.mySearch.frame.size.height, self.view.frame.size.width, self.view.frame.size.height - self.mySearch.frame.size.height);
//...

2.更简单的方法--在故事板中创建。首先，不需要在代码中创建您的出口(例如搜索栏和地图视图)。简单地拖动‘n’，将所有控件拖放到视图中。打开故事板，将视图控制器类从UIViewController设置为类名。

注意，这些属性必须是IBOutlets

@property (nonatomic,weak) IBOutlet MKMapView *myMapView;
@property (nonatomic,weak) IBOutlet UISearchBar *mySearchBar;

删除要查看的控件后，必须将可视控件连接到类插座。看看这个教程，其中解释了连接。