iOS 定位&地图

获取当前位置

• Corelocation获取位置满足一下2个要求：
  • 得到用户的许可
  • 确保设备启用定位服务

使用

• 1 . 倒入框架 MapKit Corelocatin
• 2 . 倒入Corelocation Mapkit 头文件
• 3 . 向用户发出请求
  • 1 . 在infoplist 中添加key NSLocationWhenInUseUsageDescription 或NSLocationAlwaysUsageDescription申请时给用户提示的文字作为key的内容。
  • 2 . 在代码中申请授权

self.locationManager = [[CLLocationManager alloc]init];
self.locationManager.delegate = self;
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
[self.locationManager requestAlwaysAuthorization];//总是
//[self.locationManager requestWhenInUseAuthorization];
}

       - 3 .用户许可和响应

//申请授权，如果用户没有选择过
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
//当应用在前台时授权
// [self.locationManager requestAlwaysAuthorization];//总是
[self.locationManager requestWhenInUseAuthorization];
}

       - 4 .一些配置
      ```
      //更新频率
    self.locationManager.distanceFilter = 10.0f;
    //精度
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    //定位服务是否可用
    if ([CLLocationManager locationServicesEnabled]) {
        [self.locationManager startUpdatingLocation];//开始定位
    }else{
        //暂停定位
    }
    //设置mapView 的delegate
    self.mapVIew.delegate = self;
    //修改地图的类型
     //[self.mapVIew setMapType:MKMapTypeHybrid];

   -  5 . 授权改变的代理方法

//授权状态的改变
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status{
    NSLog(@"%d",status);
}

   - 6 . 定位到位置时的代理方法

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
    NSLog(@"locations%@",locations);
    CLLocation *location = locations.lastObject;
    //如果水平精度过差，就放弃该店
    if (location.horizontalAccuracy>kCLLocationAccuracyHundredMeters) {
        return;
    }
    CLLocationCoordinate2D coordinate = location.coordinate;
    //把地图调整到定位区域
    //定位到的点作为中心点
    //设定一个跨度
    MKCoordinateSpan pan = MKCoordinateSpanMake(0.05, 0.05);
    //构造区域
    MKCoordinateRegion region = MKCoordinateRegionMake(coordinate, pan);
    //将地图调整到该区域
    [self.mapVIew setRegion:region animated:YES];
//    //添加一个系统标注点
//    MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
//    annotation.coordinate = coordinate;
//    [self.mapVIew addAnnotation:annotation];
    //添加一个自定义的标注点
    QYAnnotation *annotation = [[QYAnnotation alloc]init];
    annotation.coordinate = coordinate;
    annotation.title = @"香港";
    annotation.subtittle = @"就在这";
    [self.mapVIew addAnnotation:annotation];
}

     - 自定义的 MKAnnotation 类  QYAnonotation

//  Copyright © 2016 qingyun. All rights reserved.
//
#import 
#import 
@interface QYAnnotation : NSObject
//位置点方法
@property (nonatomic ) CLLocationCoordinate2D coordinate;
//标题和子标题
@property (nonatomic, copy) NSString *title;  //重写MkAnnotation的属性 不能写错
@property (nonatomic, copy) NSString *subtittle;
@end

   - 7 .发生错误时调用的代理方法

//发生错误的时候
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
    NSLog(@"%@",error);
}

   - 8 .返回注释视图的代理方法

//返回注释的delegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id)annotation{
    if ([annotation isKindOfClass:[QYAnnotation class]]) {//我门自己添加的
        //定义一个复用的字符串
        static NSString *indentifier = @"qingyun";
        //调用复用的方法
        MKAnnotationView *view = [mapView dequeueReusableAnnotationViewWithIdentifier:indentifier];
        if (!view) {
            view = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:indentifier];
        }
        //绑定数据
        view.annotation = annotation;
        view.image = [UIImage imageNamed:@"iconpng"];
        view.centerOffset = CGPointMake(0, -15);
        view.canShowCallout = YES;//是否显示
        return view;
    }
    return nil;
}

Mapkit 的代理

#pragma  --mark mapViewdelegate
//区域改变的时候
- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated{
    NSLog(@"区域改变");
}
//将地图诠释推到详细的视图控制器时,告诉委托用户利用注释视图的一个辅助按钮。
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{
    NSLog(@"%@",view);
}

Simulator Screen Shot Aug 26, 2016, 10.33.16 PM.png