iOS 高德自定义坐标轨迹绘制动画 类似与Keep的轨迹绘制

2、

自定义 线的图片，只需要在 rendererForOverlay 方法中，设置：

 polylineRenderer.strokeImage = [UIImage imageNamed:@"jiantouD"];  //即可显示

注意图片的格式：用于生成笔触纹理id的图片（image需满足: 长宽相等,且宽度值为2的整数次幂; 如果您需要减轻绘制产生的锯齿,您可以参考AMap.bundle中的traffic_texture_blue.png的方式,在image两边增加部分透明像素.)。（简单说就是正方的图片，又明确方向的图片，默认方向为向下）

1、

demo : https://github.com/xushiyou23/AMapTesting

利用高德绘制线：1、绘制线 坐标数组每0.02s增加一次坐标点--2、移除原来点绘制线--3、添加新的+每绘制3次，让绘制线最后3组坐标在屏幕中 居中----循环1-3；最后让绘制线居中在屏幕中即可

代码：

#import "HomeViewController.h"

///绘制间隔
#define huizhiTimes 0.02

///居中点的个数
#define IntheMiddlePoint 2
///每次画线跳跃几个点
#define jumpPoints 3

@interface HomeViewController ()<MAMapViewDelegate>{
  

//绘制了多少点  和总个数对比
    NSInteger huizhiNum;

    //绘制线
    MAPolyline *commonPolyline;
//结束绘制
    BOOL endHuizhi;
}

///需要居中显示的点
@property(nonatomic,strong) NSMutableArray * TenPointArray ;
@property (nonatomic, strong) NSMutableArray * pointArray;
@end

@implementation HomeViewController

///触摸移动 开始绘制
-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    
    [self mapViewHUIZHI];
}

- (void)viewDidLoad {
    [super viewDidLoad];

 //   加载地图
    [self setMap];

        [self.mapViewhome setMapType:MAMapTypeStandard];
        self.pointArray=[NSMutableArray array];
       
    }

#pragma mark Map
-(void)setMap{
    
    ///初始化地图
    self.mapViewhome = [[MAMapView alloc] initWithFrame:self.view.frame];
    self.mapViewhome.showsCompass= NO; // 设置成NO表示关闭指南针；YES表示显示指南针
    ///如果您需要进入地图就显示定位小蓝点，则需要下面两行代码
    self.mapViewhome.showsUserLocation = NO;
    [self.mapViewhome setZoomLevel:18 animated:YES];
    self.mapViewhome.userTrackingMode = MAUserTrackingModeFollow;
    self.mapViewhome.delegate =self;
    ///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;
    self.mapViewhome.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    ///把地图添加至view
 
    self.mapViewhome.mapType = MAMapTypeNavi;
    [self.view addSubview:self.mapViewhome];

}


#pragma mark  ---------------------------------绘制轨迹-
//创建数据
-(void)huizhiData{
    
    huizhiNum = 0;
    _TenPointArray = [NSMutableArray array];

//di 中存放坐标
            NSDictionary * di = @{@"latitude":dict[@"latitude"],@"longitude":dict[@"longitude"]};

//坐标数组
            [self.pointArray addObject:di];
        
        
}
//绘制线
- (void)mapViewHUIZHI{
    
    huizhiNum +=jumpPoints ;
    if (huizhiNum>(_pointArray.count-4)) {
        huizhiNum =_pointArray.count-1;
        endHuizhi = YES;
    }
    
    CLLocationCoordinate2D commonPolylineCoords[huizhiNum];
    for (int i=0; i<huizhiNum; i++) {
        NSDictionary * dic = self.pointArray[i];
        
        commonPolylineCoords[i].latitude=  [dic[@"latitude"] doubleValue];
        commonPolylineCoords[i].longitude=[dic[@"longitude"] doubleValue];
    }
    
     [self.mapViewhome removeOverlay:commonPolyline];
    //构造折线对象
    commonPolyline = [MAPolyline polylineWithCoordinates:commonPolylineCoords count:huizhiNum];
    //在地图上添加折线对象
    [self.mapViewhome addOverlay: commonPolyline];
    
    //设置地图中心位置
    NSDictionary * huizhiDic2 = self.pointArray[huizhiNum];
    MAPointAnnotation * a1= [[MAPointAnnotation alloc] init];
    a1.coordinate = CLLocationCoordinate2DMake([huizhiDic2[@"latitude"] doubleValue], [ huizhiDic2[@"longitude"] doubleValue]);
  
    //划线 显示进行中的后10个点
    if (_TenPointArray.count<IntheMiddlePoint) 
{ [_TenPointArray addObject:a1]; 
}else{ 
[_TenPointArray replaceObjectAtIndex:0 withObject:a1];
 } //设置地图中心位置

 if(endHuizhi){ 
[self.mapViewhome showOverlays:@[commonPolyline] edgePadding:UIEdgeInsetsMake(IPHONEHIGHT(400), IPHONEWIDTH(200), IPHONEHIGHT(400), IPHONEWIDTH(200)) animated:YES];
 huizhiNum = 0; 
}else{ if (huizhiNum%9==0) 
{ 

//开始居中 后面的点 
[self.mapViewhome showAnnotations:_TenPointArray edgePadding:UIEdgeInsetsMake(IPHONEHIGHT(500), IPHONEWIDTH(300), IPHONEHIGHT(400), IPHONEWIDTH(200)) animated:YES]; 
} } } 

#pragma mark - MAMapViewDelegate 样式 
-(MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id <MAOverlay>)overlay { 
//绘制线 
if ([overlay isKindOfClass:[MAPolyline class]]) { 
if(huizhiNum<1500){ 
[self performSelector:@selector(mapViewHUIZHI) withObject:nil afterDelay:huizhiTimes];
 }
 MAPolylineRenderer *polylineRenderer = [[MAPolylineRenderer alloc] initWithPolyline:overlay]; 
polylineRenderer.lineWidth= 3.f;
 polylineRenderer.strokeColor= [UIColor greenColor];
 polylineRenderer.lineJoinType = kMALineJoinRound; 
polylineRenderer.lineCapType= kMALineCapRound;
 return polylineRenderer;
 } 
return nil;
 } 

@end