iOS_SN_地圖的使用（3）

地圖的定位，記得不用定位的時候要關掉定位否則會一直定位，使電量使用過快。

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.mapView = [[BMKMapView alloc] initWithFrame:CGRectMake(0, 0, kwidth, kheigth)];
    //    [self.mapView setZoomLevel:14];
    [self.view addSubview:self.mapView];
    
    //初始化BMKLocationService
    _locService = [[BMKLocationService alloc]init];
    _locService.delegate = self;
    //啓動LocationService
    [_locService startUserLocationService];

}


//實現相關delegate 處理位置信息更新
//處理方向變動信息
- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation
{
    //NSLog(@"heading is %@",userLocation.heading);
    
    NSLog(@"%@--%@--%f--%f",userLocation.title,userLocation.subtitle,userLocation.location.altitude,userLocation.location.altitude);
    
}
//處理位置座標更新
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
    
    _mapView.showsUserLocation = YES;//顯示定位圖層
    [_mapView updateLocationData:userLocation];

    
    NSLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude);
}

　　自定義大頭針，要先自定義大頭針模型，其核心代碼以下：

- (BMKAnnotationView *)mapView:(BMKMapView *)view viewForAnnotation:(id <BMKAnnotation>)annotation
{
    static NSString *AnnotationViewID = @"annotationViewID";
    MyPointAnnotation *myAnnotation = (MyPointAnnotation *)annotation;
    MyAnnotationView *annotationView = (MyAnnotationView *)[view dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
    if (annotationView == nil)
    {
        annotationView = [[MyAnnotationView alloc] initWithFrame:CGRectMake(0, 0, 27, 30) viewForAnnotation:myAnnotation reuseIdentifier:AnnotationViewID];
        annotationView.image = [UIImage imageNamed:@"定位.png"];
    }
    else
    {
        annotationView.myAnnotation = myAnnotation;
        [annotationView setNeedsLayout];
    }
    annotationView.annotation = myAnnotation;
    annotationView.canShowCallout = true;
    return annotationView;
}

　　下面有一個總體的demo會貼出來。

本文GitHub地址https://github.com/zhangkiwi/iOS_SN_BDMap-Test