Iphone 如何创建MKMapView？

文档中没有太多关于它的内容，而且似乎没有用于此的init方法？如何创建并设置要在地图视图中显示的经度和纬度或区域？

界面生成器包括MKMapView（地图视图）。将元素拖到XIB中，在控制器中添加引用插座，将它们链接起来。然后，设置区域。有很多很好的例子：

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您可以通过代码或界面生成器包含MKMapView

对于Interface builder，只需将其拖放到xib即可。（工具->库->地图视图）

按代码

在您的.h文件中

MKMapView * mapView;

在你的.m文件中

-(void)viewWillAppear:(BOOL)animated 
{   
    self.mapView = [[[MKMapView alloc] initWithFrame:self.view.frame] autorelease];
    [self.view addSubview:self.mapView];            
}

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首先，添加MapKit.framework。
然后，在.h文件中

#import <MapKit/MapKit.h>

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mapview示例编码以查找位置

@interface mapViewController ()

@end

@implementation mapViewController

- (void)viewDidLoad {
[super viewDidLoad];


self.title=self.name;

 CLLocationCoordinate2D myCoordinate = 
 _mapView.userLocation.coordinate;
  myCoordinate.latitude =[self.lat doubleValue];
 myCoordinate.longitude =[self.lng doubleValue];


 //    NSLog(@"--->%@",self.lat);
 //     NSLog(@"--->%@",self.lng);
 //set location and zoom level
 MKCoordinateRegion viewRegion = 
  MKCoordinateRegionMakeWithDistance(myCoordinate, 1000, 1000);
  MKCoordinateRegion adjustedRegion = [self.mapView   
  regionThatFits:viewRegion];
 [self.mapView setRegion:adjustedRegion animated:YES];

 MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
 // Set your annotation to point at your coordinate
 point.coordinate = myCoordinate;
 point.title = self.address;

//Drop pin on map
[self.mapView addAnnotation:point];

self.mapView.delegate = self;
// Do any additional setup after loading the view.
}

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示例代码：您应该能够使用“initWithFrame”（在UIView文档中）分配和初始化视图，然后将视图作为子视图添加到父视图中。

(void)viewDidLoad { 
    [super viewDidLoad];
    MKMapView *myMapView = [[MKMapView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [self.view addSubview:myMapView];
 }

@interface mapViewController ()

@end

@implementation mapViewController

- (void)viewDidLoad {
[super viewDidLoad];


self.title=self.name;

 CLLocationCoordinate2D myCoordinate = 
 _mapView.userLocation.coordinate;
  myCoordinate.latitude =[self.lat doubleValue];
 myCoordinate.longitude =[self.lng doubleValue];


 //    NSLog(@"--->%@",self.lat);
 //     NSLog(@"--->%@",self.lng);
 //set location and zoom level
 MKCoordinateRegion viewRegion = 
  MKCoordinateRegionMakeWithDistance(myCoordinate, 1000, 1000);
  MKCoordinateRegion adjustedRegion = [self.mapView   
  regionThatFits:viewRegion];
 [self.mapView setRegion:adjustedRegion animated:YES];

 MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
 // Set your annotation to point at your coordinate
 point.coordinate = myCoordinate;
 point.title = self.address;

//Drop pin on map
[self.mapView addAnnotation:point];

self.mapView.delegate = self;
// Do any additional setup after loading the view.
}