谷歌地图

锦烟霞

1. 注册应用获取key
2. 集成SDK

pod 'GoogleMaps'#地图

3. 在VC中添加地图视图:GMSMapView

//谷歌地图
#import <GoogleMaps/GoogleMaps.h>
@property (nonatomic,strong) GMSMapView *gmMapView;
-(GMSMapView *)gmMapView{
    if (_gmMapView == nil) {
        CGFloat latitude = 0.0f;
        CGFloat longitude = 0.0f;
        CLLocation *location = [[CLLocation alloc] initWithLatitude: latitude longitude: longitude];
        /**
         *设置显示区域
         *location.coordinate位置信息
         *zoom精度
         */
        GMSCameraPosition *camera = [GMSCameraPosition cameraWithTarget:location.coordinate zoom:15];
        _gmMapView = [GMSMapView mapWithFrame:CGRectMake(0,0 ,SCREEN_WIDTH,SCREEN_HEIGHT-64) camera:camera];
    }
    return _gmMapView;
}

注意：在谷歌地图中使用的坐标系区分地域：
在国外是地球坐标系:WGS84，在国内是火星坐标GCJ－02。关于坐标

4. 添加自定义地标:GMSMarker

        //初始化
        GMSMarker *benginMarker = [[GMSMarker alloc] init];
        //位置
        benginMarker.position = ...;
        //标题
        benginMarker.title = @"";
        //详细
        benginMarker.snippet = @"";
        //图标
        benginMarker.icon = ...;
        //显示
        benginMarker.map = self.gmMapView;

5. 添加轨迹:GMSPolyline、GMSMutablePath

    //初始化路线信息
    GMSMutablePath *path = [GMSMutablePath path];
    for (CLLocation *location in self.locations) {
        //添加路线上的点坐标
        [path addCoordinate:location.coordinate];
    }
    //根据路线初始化一条轨迹
    GMSPolyline *polyline = [GMSPolyline polylineWithPath:path];
    //轨迹的宽度
    polyline.strokeWidth = 5.0;
    //轨迹颜色
    [polyline setStrokeColor:RGBA(81,191,179,1)];
    //添加轨迹
    polyline.map = self.gmMapView;