flutter 高德地图路线规划插件IOS版

前言

在引入高德库的前提下，Flutter笔记-调用原生IOS高德地图sdk

以下贴上全部代码配置

Flutter参数配置
     child: UiKitView(viewType: "com.flutter_to_path_planning.amap",
          creationParams: <String,dynamic>{
            "latitude":39.9088230000, //配置地图显示中心位置点
            "longitude":116.3974700000,
            "origin_destination":[39.9088230000,116.3974700000,39.8683,116.56078],//路线规划配置 起点--终点
            "routeType":"1", //1驾车路线规划  2步行出行
          },
          creationParamsCodec: new StandardMessageCodec(),
        ),
ios端注册插件

AppDelegate.m

[FlutterMapPlugin registerWithRegistrar:[self registrarForPlugin:@"FlutterMapPlugin"]];

FlutterMapPlugin.m

  //路径规划
 [registrar registerViewFactory:[[PathPlanningFactory alloc] initWithMessenger:registrar.messenger] withId:@"com.flutter_to_path_planning.amap"];

PathPlanningFactory.m

#import "PathPlanningFactory.h"
#import "MapPathPlanningView.h"

@implementation PathPlanningFactory {

NSObject<FlutterBinaryMessenger>*_messenger;
}
- (instancetype)initWithMessenger:(NSObject<FlutterBinaryMessenger> *)messager{
    self = [super init];
    if (self) {
        _messenger = messager;
    }
    return self;
}

//设置参数的编码方式
-(NSObject<FlutterMessageCodec> *)createArgsCodec{
    return [FlutterStandardMessageCodec sharedInstance];
}

//用来创建 ios 原生view
- (nonnull NSObject<FlutterPlatformView> *)createWithFrame:(CGRect)frame viewIdentifier:(int64_t)viewId arguments:(id _Nullable)args {
    //args 为flutter 传过来的参数
    MapPathPlanningView *mapView = [[MapPathPlanningView alloc] initWithWithFrame:frame viewIdentifier:viewId arguments:args binaryMessenger:_messenger];
    return mapView;
}

@end

MapPathPlanningView.m

#import "MapPathPlanningView.h"
#import <MAMapKit/MAMapKit.h>
#import <AMapFoundationKit/AMapFoundationKit.h>

#import <AMapSearchKit/AMapSearchKit.h>

static const NSString *RoutePlanningViewControllerStartTitle       = @"起点";
static const NSString *RoutePlanningViewControllerDestinationTitle = @"终点";
static const NSInteger RoutePlanningPaddingEdge                    = 20;

@interface MapPathPlanningView ()<MAMapViewDelegate,AMapSearchDelegate>
@property (nonatomic, strong) MAAnnotationView *userLocationAnnotationView;

/* 起始点经纬度. */
@property (nonatomic) CLLocationCoordinate2D startCoordinate;
/* 终点经纬度. */
@property (nonatomic) CLLocationCoordinate2D destinationCoordinate;

@property (nonatomic, strong) MAPointAnnotation *startAnnotation;
@property (nonatomic, strong) MAPointAnnotation *destinationAnnotation;


@end

@implementation MapPathPlanningView {
    
    //创建后的标识
    int64_t _viewId;
    
    MAMapView *_mapView;
    
    AMapSearchAPI *_search;
    //消息回调
    FlutterMethodChannel* _channel;
    
    UIButton *gpsButton;
    
}

//在这里只是创建了一个UILabel
-(instancetype)initWithWithFrame:(CGRect)frame viewIdentifier:(int64_t)viewId arguments:(id)args binaryMessenger:(NSObject<FlutterBinaryMessenger> *)messenger{
    if ([super init]) {
        
        //double atitu2de = args[@"latitude"];
        //NSInteger _latitude = args[@"latitude"];
        NSNumber *latitude = args[@"latitude"];
        NSNumber *longitude = args[@"longitude"];
        
        NSArray *origin_destination = args[@"origin_destination"];
          NSLog(@"接受数组：%@", origin_destination);
          NSLog(@"接数组：%@",   [origin_destination objectAtIndex:0]);
        
         NSString *routeType =args[@"routeType"];
        
        ///地图需要v4.5.0及以上版本才必须要打开此选项（v4.5.0以下版本，需要手动配置info.plist）
        [AMapServices sharedServices].enableHTTPS = YES;
        
        
        _mapView = [[MAMapView alloc] initWithFrame:self.view.bounds];
        _viewId = viewId;
        
        // 显示比例尺
        _mapView.showsScale = NO;
        // 显示指南针
        _mapView.showsCompass = NO;
        // 显示定位蓝点
        _mapView.showsUserLocation = YES;
        // 用户定位模式
        _mapView.userTrackingMode = MAUserTrackingModeFollow;
        // 设置缩放级别
        [_mapView setZoomLevel:15];
        // 设置当前地图的中心点：例如默认地图中心显示坐标为（39.9088230000, 116.3974700000）
        _mapView.centerCoordinate = CLLocationCoordinate2DMake([latitude doubleValue],[longitude doubleValue]);
        
        _mapView.delegate = self;
        
        
        
        UIView *zoomPannelView = [self makeZoomPannelView];
        zoomPannelView.center = CGPointMake(self.view.bounds.size.width -  CGRectGetMidX(zoomPannelView.bounds) - 10,
                                            self.view.bounds.size.height -  CGRectGetMidY(zoomPannelView.bounds) - 255);
        
        zoomPannelView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleLeftMargin;
        [_mapView addSubview:zoomPannelView];
        
        
        gpsButton = [self makeGPSButtonView];
        gpsButton.center = CGPointMake(_mapView.bounds.size.height -  CGRectGetMidX(gpsButton.bounds) - 10,
                                       _mapView.bounds.size.height -  CGRectGetMidY(gpsButton.bounds) + 50);
        [_mapView addSubview:gpsButton];
        gpsButton.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin;
        
        
        _search = [[AMapSearchAPI alloc] init];
        _search.delegate = self;
        
        self.startCoordinate = CLLocationCoordinate2DMake( [[origin_destination objectAtIndex:0] doubleValue], [[origin_destination objectAtIndex:1] doubleValue]);
        
        self.destinationCoordinate  = CLLocationCoordinate2DMake( [[origin_destination objectAtIndex:2] doubleValue], [[origin_destination objectAtIndex:3] doubleValue]);
        
        [self addDefaultAnnotations];
        
    
        if ([routeType isEqualToString:@"1"]){
            AMapDrivingRouteSearchRequest *navi = [[AMapDrivingRouteSearchRequest alloc] init];
            navi.requireExtension = YES;
            navi.strategy = 5;
            
            /* 出发点. */
            navi.origin = [AMapGeoPoint locationWithLatitude:self.startCoordinate.latitude
                                                   longitude:self.startCoordinate.longitude];
            /* 目的地. */
            navi.destination = [AMapGeoPoint locationWithLatitude:self.destinationCoordinate.latitude
                                                        longitude:self.destinationCoordinate.longitude];
            [_search AMapDrivingRouteSearch:navi];
        } else if([routeType isEqualToString:@"2"]){
            
            AMapWalkingRouteSearchRequest *navi = [[AMapWalkingRouteSearchRequest alloc] init];
            navi.origin = [AMapGeoPoint locationWithLatitude:self.startCoordinate.latitude
                                                   longitude:self.startCoordinate.longitude];
            navi.destination = [AMapGeoPoint locationWithLatitude:self.destinationCoordinate.latitude
                                                        longitude:self.destinationCoordinate.longitude];
            [_search AMapWalkingRouteSearch:navi];
        }
    }
    return self;
}

//实现路径搜索的回调函数
- (void)onRouteSearchDone:(AMapRouteSearchBaseRequest *)request response:(AMapRouteSearchResponse *)response
{
    if(response.route == nil)
    {
        return;
    }
    
    AMapPath *path = response.route.paths[0]; //选择一条路径
    AMapStep *step = path.steps[0]; //这个路径上的导航路段数组
    NSLog(@"%@",step.polyline);   //此路段坐标点字符串
    
    
    MAPolyline *_polyline;
    
    if (response.count > 0)
    {
        //      //直接取第一个方案
        AMapPath *path = response.route.paths[0];
        //移除旧折线对象
        [_mapView removeOverlay:_polyline];
        //构造折线对象
        _polyline = [self polylinesForPath:path];
        //添加新的遮盖，然后会触发代理方法(- (MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id<MAOverlay>)overlay)进行绘制
        [_mapView addOverlay:_polyline];
    }
}

//路线解析
- (MAPolyline *)polylinesForPath:(AMapPath *)path{
    if (path == nil || path.steps.count == 0){
        return nil;
    }
    NSMutableString *polylineMutableString = [@"" mutableCopy];
    for (AMapStep *step in path.steps) {
        [polylineMutableString appendFormat:@"%@;",step.polyline];
    }
    
    NSUInteger count = 0;
    CLLocationCoordinate2D *coordinates = [self coordinatesForString:polylineMutableString
                                                     coordinateCount:&count
                                                          parseToken:@";"];
    
    MAPolyline *polyline = [MAPolyline polylineWithCoordinates:coordinates count:count];
    
    free(coordinates),coordinates = NULL;
    return polyline;
}

//解析经纬度
- (CLLocationCoordinate2D *)coordinatesForString:(NSString *)string
                                 coordinateCount:(NSUInteger *)coordinateCount
                                      parseToken:(NSString *)token{
    if (string == nil){
        return NULL;
    }
    
    if (token == nil){
        token = @",";
    }
    
    NSString *str = @"";
    if (![token isEqualToString:@","]){
        str = [string stringByReplacingOccurrencesOfString:token withString:@","];
    }else{
        str = [NSString stringWithString:string];
    }
    
    NSArray *components = [str componentsSeparatedByString:@","];
    NSUInteger count = [components count] / 2;
    if (coordinateCount != NULL){
        *coordinateCount = count;
    }
    CLLocationCoordinate2D *coordinates = (CLLocationCoordinate2D*)malloc(count * sizeof(CLLocationCoordinate2D));
    
    for (int i = 0; i < count; i++){
        coordinates[i].longitude = [[components objectAtIndex:2 * i]     doubleValue];
        coordinates[i].latitude  = [[components objectAtIndex:2 * i + 1] doubleValue];
    }
    return coordinates;
}

//绘制遮盖时执行的代理方法
- (MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id <MAOverlay>)overlay
{
    /* 自定义定位精度对应的MACircleView. */
    
    //画路线
    if ([overlay isKindOfClass:[MAPolyline class]])
    {
        //初始化一个路线类型的view
        MAPolylineRenderer *polygonView = [[MAPolylineRenderer alloc] initWithPolyline:overlay];
        //设置线宽颜色等
        polygonView.lineWidth = 8.f;
        polygonView.strokeColor = [UIColor colorWithRed:0.015 green:0.658 blue:0.986 alpha:1.000];
        polygonView.fillColor = [UIColor colorWithRed:0.940 green:0.771 blue:0.143 alpha:0.800];
        polygonView.lineJoinType = kMALineJoinRound;//连接类型
        //返回view，就进行了添加
        return polygonView;
    }
    return nil;
    
}


- (UIView *)makeZoomPannelView
{
    UIView *ret = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 53, 98)];
    
    UIButton *incBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 53, 49)];
    [incBtn setImage:[UIImage imageNamed:@"increase"] forState:UIControlStateNormal];
    [incBtn sizeToFit];
    [incBtn addTarget:self action:@selector(zoomPlusAction) forControlEvents:UIControlEventTouchUpInside];
    
    UIButton *decBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 49, 53, 49)];
    [decBtn setImage:[UIImage imageNamed:@"decrease"] forState:UIControlStateNormal];
    [decBtn sizeToFit];
    [decBtn addTarget:self action:@selector(zoomMinusAction) forControlEvents:UIControlEventTouchUpInside];
    
    
    [ret addSubview:incBtn];
    [ret addSubview:decBtn];
    
    return ret;
}


- (void)zoomPlusAction
{
    CGFloat oldZoom = _mapView.zoomLevel;
    [_mapView setZoomLevel:(oldZoom + 1) animated:YES];
    _mapView.showsScale = YES;
}

- (void)zoomMinusAction
{
    CGFloat oldZoom = _mapView.zoomLevel;
    [_mapView setZoomLevel:(oldZoom - 1) animated:YES];
    _mapView.showsScale = NO;
}

- (UIButton *)makeGPSButtonView {
    UIButton *ret = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
    ret.backgroundColor = [UIColor whiteColor];
    ret.layer.cornerRadius = 4;
    
    [ret setImage:[UIImage imageNamed:@"gpsStat1"] forState:UIControlStateNormal];
    [ret addTarget:self action:@selector(gpsAction) forControlEvents:UIControlEventTouchUpInside];
    
    return ret;
}

- (void)gpsAction {
    if(_mapView.userLocation.updating && _mapView.userLocation.location) {
        [_mapView setCenterCoordinate:_mapView.userLocation.location.coordinate animated:YES];
        [gpsButton setSelected:YES];
    }
}

/**
 * @brief 根据anntation生成对应的View
 * @param mapView 地图View
 * @param annotation 指定的标注
 * @return 生成的标注View
 */
- (MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id<MAAnnotation>)annotation {
    if ([annotation isKindOfClass:[MAUserLocation class]]) {//定位蓝点
        static NSString *reuseIndetifier = @"annotationReuseIndetifier";
        MAAnnotationView *annotationView = (MAAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reuseIndetifier];
        if (annotationView == nil) {
            annotationView = [[MAAnnotationView alloc] initWithAnnotation:annotation
                                                          reuseIdentifier:reuseIndetifier];
        }
        // 设置标记点的图片
        annotationView.image = [UIImage imageNamed:@"userPosition"];
        annotationView.canShowCallout= YES;       //设置气泡可以弹出，默认为NO
        
        return annotationView;
        
    }
    else if ([annotation isKindOfClass:[MAPointAnnotation class]])
    {
        static NSString *routePlanningCellIdentifier = @"RoutePlanningCellIdentifier";
        
        MAAnnotationView *poiAnnotationView = (MAAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:routePlanningCellIdentifier];
        if (poiAnnotationView == nil)
        {
            poiAnnotationView = [[MAAnnotationView alloc] initWithAnnotation:annotation
                                                             reuseIdentifier:routePlanningCellIdentifier];
        }
        
        poiAnnotationView.canShowCallout = YES;
        poiAnnotationView.image =  nil;
        
        /* 起点. */
        if ([[annotation title] isEqualToString:(NSString*)RoutePlanningViewControllerStartTitle])
        {
            poiAnnotationView.image = [UIImage imageNamed:@"startPoint"];
        }
        /* 终点. */
        else if([[annotation title] isEqualToString:(NSString*)RoutePlanningViewControllerDestinationTitle])
        {
            poiAnnotationView.image = [UIImage imageNamed:@"endPoint"];
        }
        return poiAnnotationView;
    }

    return nil;
}


- (void)addDefaultAnnotations
{
    MAPointAnnotation *startAnnotation = [[MAPointAnnotation alloc] init];
    startAnnotation.coordinate = self.startCoordinate;
    startAnnotation.title      = (NSString*)RoutePlanningViewControllerStartTitle;
    startAnnotation.subtitle   = [NSString stringWithFormat:@"{%f, %f}", self.startCoordinate.latitude, self.startCoordinate.longitude];
    self.startAnnotation = startAnnotation;
    
    MAPointAnnotation *destinationAnnotation = [[MAPointAnnotation alloc] init];
    destinationAnnotation.coordinate = self.destinationCoordinate;
    destinationAnnotation.title      = (NSString*)RoutePlanningViewControllerDestinationTitle;
    destinationAnnotation.subtitle   = [NSString stringWithFormat:@"{%f, %f}", self.destinationCoordinate.latitude, self.destinationCoordinate.longitude];
    self.destinationAnnotation = destinationAnnotation;
    
    [_mapView addAnnotation:startAnnotation];
    [_mapView addAnnotation:destinationAnnotation];
}


- (nonnull UIView *)view {
    return _mapView;
}

@end
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