苹果地图定位和显示区域

//

//  ViewController.m

//  mapdemo001

//

//  Created by apple on 14-4-28.

//  Copyright (c) 2014年 apple. All rights reserved.

//

#import "ViewController.h"

#import <MapKit/MapKit.h>
@interface ViewController () <MKMapViewDelegate>

{

    MKMapView *_mapview;

}

@end
@implementation ViewController
- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.
MKMapView *mapview = [[MKMapView alloc] initWithFrame:self.view.bounds];

    mapview.delegate = self;

    mapview.showsUserLocation = YES;

    [self.view addSubview:mapview];

}
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation

{

    if (_mapview) {

        return;

    }

    //设置中心位置

    [mapView setCenterCoordinate:userLocation.location.coordinate];

    //设置跨度

    MKCoordinateSpan span = MKCoordinateSpanMake(0.102988, 0.078449);

    //显示区域

    MKCoordinateRegion region = MKCoordinateRegionMake(userLocation.location.coordinate, span);
//设置显示区域

    [mapView setRegion:region animated:YES];

    _mapview = mapView;

}
- (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated

{

    NSLog(@"%f %f",mapView.region.span.latitudeDelta,mapView.region.span.longitudeDelta);

}
- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}
@end

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