iOS开发中地图（MapKit）的使用

r囧r小猫 2022-08-26 12:18 216阅读 0赞

iOS开发中地图（MapKit）的使用

首先要引入MapKit.framework的框架

将\#import <MapKit/MapKit.h>的库引进来

但是运行结果可以出现地图但是一直出现这样的错误该怎么解决

**Apr 7 18:26:27 Amorming.local dingwei\[600\] <Error>: CGBitmapContextCreate: unsupported parameter combination: 5 integer bits/component; 16 bits/pixel; 3-component color space; kCGImageAlphaNoneSkipLast; 512 bytes/row.**

**2014-04-07 18:26:27.843 dingwei\[600:7b03\] vImage decode failed, falling back to CG path.**

以下是代码

GPSViewController.h文件中

#import <UIKit/UIKit.h>
    #import <CoreLocation/CoreLocation.h>
    #import <MapKit/MapKit.h>
    @interface GPSViewController : UIViewController<CLLocationManagerDelegate,MKMapViewDelegate>
    
    @property(nonatomic,retain) CLLocationManager* locationmanager;
    @property(nonatomic,retain) CLGeocoder* geocoder;
    @end

GPSViewController.m文件中

#import "GPSViewController.h"
    
    @interface GPSViewController ()
    
    @end
    
    @implementation GPSViewController
    
    @synthesize locationmanager,geocoder;
    
    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
    {
        self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
        if (self) {
            // Custom initialization
        }
        return self;
    }
    
    - (void)viewDidLoad
    {
        [super viewDidLoad];
    	// Do any additional setup after loading the view.
        //初始化地图视图
        MKMapView* mapview = [[MKMapView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];
        //地图的代理方法
        mapview.delegate = self;
        //是否显示当前的位置
        mapview.showsUserLocation = YES;
        //地图的类型， iOS开发中自带的地图
        //使用第三方的地图可以查找周边环境的餐馆，学校之类的
        /*
         MKMapTypeStandard 标准地图
         MKMapTypeSatellite 卫星地图
         MKMapTypeHybrid 混合地图
         */
        mapview.mapType = MKMapTypeStandard;
        
        //河南南阳的经纬度，初始化的坐标
        CLLocationCoordinate2D coor2d = {33.00,112.52};
        //CLLocationCoordinate2D coor2d = {37.7,112.4};
        //显示范围，数值越大，范围就越大
        MKCoordinateSpan span = {5,5};
        MKCoordinateRegion region = {coor2d,span};
        //是否允许缩放，一般都会让缩放的
        //mapview.zoomEnabled = NO;
        //mapview.scrollEnabled = NO;
        //地图初始化时显示的区域
        [mapview setRegion:region];
        [self.view addSubview:mapview];
        locationmanager = [[CLLocationManager alloc]init];
        
        //设置精度
        /*
         kCLLocationAccuracyBest
         kCLLocationAccuracyNearestTenMeters
         kCLLocationAccuracyHundredMeters
         kCLLocationAccuracyHundredMeters
         kCLLocationAccuracyKilometer
         kCLLocationAccuracyThreeKilometers
         */
        //设置定位的精度
        [locationmanager setDesiredAccuracy:kCLLocationAccuracyBest];
        //实现协议
        locationmanager.delegate = self;
        NSLog(@"开始定位");
        //开始定位
        [locationmanager startUpdatingLocation];
       
    }
    
    #pragma mark locationManager delegate
    
    //实现定位 6.0 过期的做法
    - (void)locationManager:(CLLocationManager *)manager
    	didUpdateToLocation:(CLLocation *)newLocation
    		   fromLocation:(CLLocation *)oldLocation
    {
        NSLog(@"hello");
        //打印出精度和纬度
        CLLocationCoordinate2D coordinate = newLocation.coordinate;
        NSLog(@"输出当前的精度和纬度");
        NSLog(@"精度：%f 纬度：%f",coordinate.latitude,coordinate.longitude);
        //停止定位
        [locationmanager stopUpdatingLocation];
        //计算两个位置的距离
        float distance = [newLocation distanceFromLocation:oldLocation];
        NSLog(@" 距离 %f",distance);
        
        //====位置的反编码 5.0 之后的
        /*
         
         */
        
       geocoder = [[CLGeocoder alloc]init];
        [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray*placemarks,NSError* error)
         {
             //NSLog(@"hffjv");
             for (CLPlacemark* place in placemarks) {
                 //NSLog(@"hffjv");
                 NSLog(@"name %@",place.name); //位置
                 NSLog(@"thoroughfare %@",place.thoroughfare);//街道
                 //子街道
                 NSLog(@"subthoroughfare %@",place.subAdministrativeArea);
                 //市
                 NSLog(@"loclitity %@",place.locality);
                 //区
                 NSLog(@"subLocality %@",place.subLocality);
                 //国家
                 NSLog(@"country %@",place.country);
                 NSLog(@"hffjv");
             }
             
         }];
    }
    
    // 6.0 之后新增的位置调用方法
    
    /*-(void)locationManager:(CLLocationManager *)manager
    didUpdateLocations:(NSArray *)locations
    {
        for (CLLocation* location in locations) {
            NSLog(@"%@",location);
        }
        //停止定位
       // [manager stopUpdatingLocation];
        
    }
    */
    #pragma mark MKMapViewDelegate的代理方法
    //返回标注视图（大头针视图）
    /*- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
    {
        
    }*/
    
    //更新当前位置调用
    - (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
    {
        
    }
    //选中注释图标
    - (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
    {
        
    }
    //地图的显示区域改变了调用
    - (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
    {
        
    }
    @end