#import <BaiduMapAPI_Map/BMKMapComponent.h>

// 创建BMKBackgroundMapView
_backgroundMapView = [BMKBackgroundMapView new];
// 设置_backgroundMapView的frame
 self.backgroundMapView.frame = CGRectMake(0, 150, self.view.frame.size.width, 700);

// 1.获取多实例地图的BMKMapView
BMKMapView *mapView = [self.multiNaviView getNaviMapView]
//2.BMKMapView设置支持后台绘制
[mapView setSupportBackgroundDraw:YES];
//3.关联到BMKBackgroundMapView
self.backgroundMapView.mapview = mapView;

// 从导航组建从获取BMKBackgroundNavigationView，并关联到BMKBackgroundMapView
self.backgroundMapView.navigationView = [[BMKCycleNavigationManager sharedManager] getBackgroundNavigationView];

[self.view addSubview:self.backgroundMapView];

// 建议监听系统进出前后台通知，控制绘制开始/停止
[self.backgroundMapView startRender];
[self.backgroundMapView stopRender];

/// 帧率控制，默认30帧/s，范围10～60帧/s
@property (nonatomic, assign) NSInteger frameRate;

/// 3D绘制
@property (nonatomic, assign) BOOL enable3D;

/// 开始渲染
- (void)startRender;
/// 结束渲染
- (void)stopRender;

/// 获取背景图层,用于自定义背景颜色，设置UIView的backgroundColor即可，眼镜场景可将改颜色设置为透明或半透明色
@property (nonatomic, readonly) UIView *backgroundView;

/// 获取路网图层，用于自定义路网颜色
@property (nonatomic, readonly) BMKBackgroundRoadNetView *roadNetView;

/// 设置路网颜色
@property (nonatomic, strong) UIColor *roadNetColor;

/// 是否绘制路名，默认NO
@property (nonatomic, assign) BOOL needDrawRoadName;
/// 路名字体，默认[UIFont systemFontOfSize:10]
@property (nonatomic, strong) UIFont *roadNameFont;
/// 路名颜色，默认 blackColor
@property (nonatomic, strong) UIColor *roadNameTextColor;
/// 路名描边颜色，默认 whiteColor
@property (nonatomic, strong) UIColor *roadNameStrokeColor;
/// 路名描边宽度，默认 1.0
@property (nonatomic, assign) CGFloat roadNameStrokeWidth;

/// 获取导航图层,用于自定义导航路线宽度，颜色（驾车导航路线路况颜色，走过置灰或擦除，置灰颜色），路线数据更新；
/// 用于自定义导航小车图标及大小，位置方向更新，罗盘是否显示，小车车头是否跟随手机旋转
@property (nonatomic, strong) BMKBackgroundNavigationView *navigationView;

/// 是否支持绘制引导线（当前位置偏离路线时），默认NO
@property (nonatomic, assign) BOOL needDrawGuideLine;
/// 引导线颜色，默认蓝色虚线
@property (nonatomic, strong) UIColor *guideLineColor;
/// 引导线线宽，默认2point，范围1～30point
@property (nonatomic, assign) CGFloat guideLineWidth;

/// 是否支持绘制当前位置到终点的牵引红线，默认NO
@property (nonatomic, assign) BOOL needDrawRedLine;
/// 牵引线颜色，默认红色实线
@property (nonatomic, strong) UIColor *redLineColor;
/// 牵引线线宽，默认2point，范围1～30point
@property (nonatomic, assign) CGFloat redLineWidth;

/// 设置是否绘制起点图标
@property (nonatomic, assign) BOOL needDrawStartPoint;
/// 设置起点经纬度位置
@property (nonatomic, assign) CLLocationCoordinate2D startPoint;
/// 设置起点图标
@property (nonatomic, strong, nullable) UIImage *startPointIcon;
/// 设置起点图标尺寸，默认图片尺寸
@property (nonatomic, assign) CGSize startPointIconSize;
/// 设置起点图标偏移量，默认图片底部中心在经纬度位置（0.0，-0.5），X轴负数向左，Y轴负数向上片，范围值-0.5～0.5
@property (nonatomic, assign) CGPoint startPointIconOffset;

/// 设置是否绘制途径点图标
@property (nonatomic, assign) BOOL needDrawViaPoint;
/// 设置已走过途径点绘制模式
@property (nonatomic, assign) BMKViaPointPassedDisplayMode viaPointPassedDisplayMode;
/// 设置途径点经纬度位置列表
@property (nonatomic, copy, nullable) NSArray<BMKNaviViaPointInfo *> *viaPoints;
/// 设置途径点图标
@property (nonatomic, strong, nullable) UIImage *viaPointIcon;
/// 设置已走过途径点图标
@property (nonatomic, strong, nullable) UIImage *viaPassedPointIcon;
/// 设置途径点图标尺寸，默认图片尺寸
@property (nonatomic, assign) CGSize viaPointIconSize;
/// 设置途径点图标偏移量，默认图片底部中心在经纬度位置（0.0，-0.5），X轴负数向左，Y轴负数向上片，范围值-0.5～0.5
@property (nonatomic, assign) CGPoint viaPointIconOffset;

/// 设置是否绘制终点图标
@property (nonatomic, assign) BOOL needDrawEndPoint;
/// 设置终点经纬度位置
@property (nonatomic, assign) CLLocationCoordinate2D endPoint;
/// 设置终点图标
@property (nonatomic, strong, nullable) UIImage *endPointIcon;
/// 设置终点图标尺寸，默认图片尺寸
@property (nonatomic, assign) CGSize endPointIconSize;
/// 设置终点图标偏移量，默认图片底部中心在经纬度位置（0.0，-0.5），X轴负数向左，Y轴负数向上片，范围值-0.5～0.5
@property (nonatomic, assign) CGPoint endPointIconOffset;

/// 设置导航（小车）图标
@property (nonatomic, strong) UIImage *navigationIcon;
/// 设置导航（小车）图标尺寸，默认图片尺寸
@property (nonatomic, assign) CGSize navigationIconSize;
/// 是否展示用户实时方向,设置后会从dataSource获取实时数据
@property (nonatomic, assign) BOOL needFllowPhoneHeading;

/// 是否支持绘制罗盘，默认NO
@property (nonatomic, assign) BOOL needDrawCompass;
/// 设置罗盘图标
@property (nonatomic, strong, nullable) UIImage *compassIcon;
/// 设置罗盘图标尺寸，默认图片尺寸
@property (nonatomic, assign) CGSize compassIconSize;

/// 设置路线颜色，默认：#50D27D
@property (nonatomic, strong) UIColor *routeColor;
/// 设置路线线宽，默认：10point，范围1～30point
@property (nonatomic, assign) CGFloat lineWidth;
/// 走过路线绘制模式。默认BMKRoutePassedDisplayModeNone，无任何效果
@property (nonatomic, assign) BMKRoutePassedDisplayMode routePassedDisplayMode;
/// 设置经过的路线颜色
@property (nonatomic, strong) UIColor *routePassedColor;
/// 设置路线路况颜色数组,count必须为5，默认按顺序为未知:#0000FF 畅通：#50D27D 缓行：#FFD046 拥挤：#E72110 严重拥堵：#B4170A 
@property (nonatomic, strong) NSArray<UIColor *> *trafficColor;
@property (nonatomic, strong) NSArray *trafficColor;

/// 是否绘制路名，默认NO
@property (nonatomic, assign) BOOL needDrawRouteName;
/// 路名绘制重复间距，默认 150
@property (nonatomic, assign) CGFloat routeNameRepeatSpacing;
/// 路名字体，默认[UIFont systemFontOfSize:10]
@property (nonatomic, strong) UIFont *routeNameFont;
/// 路名颜色，默认 blackColor
@property (nonatomic, strong) UIColor *routeNameTextColor;
/// 路名描边颜色，默认 whiteColor
@property (nonatomic, strong) UIColor *routeNameStrokeColor;
/// 路名描边宽度，默认 1.0
@property (nonatomic, assign) CGFloat routeNameStrokeWidth;

//已走过路线展示方式
typedef NS_ENUM (NSInteger, BMKRoutePassedDisplayMode) {
    BMKRoutePassedDisplayModeNone,           // 无效果
    BMKRoutePassedDisplayModeErased,         //擦除
    BMKRoutePassedDisplayModeGrayed  //置灰
};

//已走过途径点展示方式
typedef NS_ENUM (NSInteger, BMKViaPointPassedDisplayMode) {
    BMKViaPointPassedDisplayModeNone,           // 无效果
    BMKViaPointPassedDisplayModeErased,         //擦除
    BMKViaPointPassedDisplayModeGrayed  //置灰
};

// 截屏+裁剪
[self.backgroundMapView takeSnapshot:self.backgroundMapView.bounds];
或
// 截屏+裁剪+不截logo
[self.backgroundMapView takeSnapshot:self.backgroundMapView.bounds needLogo:NO];