iOS开发中地图（MapKit）的使用

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 *)managerdidUpdateToLocation:(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 *)managerdidUpdateLocations:(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