運動軌跡回放高德官方有demo葡缰，但需要運動物實時居中

代碼在這里

先上最后效果圖

2018-01-18 16_55_29.gif

創(chuàng)建CADisplayLink當作計時器剩蟀，不要用NSTimer(不精確)

frameInterval 幀間隔，相當于每隔多久刷新一次 (設(shè)置為1映皆，代表1/60秒刷新一次链快，實例中設(shè)的是2幀)

  dpLink = CADisplayLink(target: self, selector: #selector(ViewController.update))
  dpLink?.frameInterval = minframeInterval
  dpLink?.isPaused = false
  dpLink?.add(to: RunLoop.current, forMode: RunLoopMode.commonModes)

在update方法中持續(xù)改變地圖中心凡辱，地圖旋轉(zhuǎn)角度，地圖相機角度

  self.mapView.setCenter(traceCoordinates[uptateIndex+1], animated: false)
  self.mapView.setRotationDegree(CGFloat(yvAngle) , animated: false, duration: 1)
  self.mapView.setCameraDegree( CGFloat(yvAngle), animated: false, duration: 1)

uptateIndex 每次加1秒紧，temporarytraceCoordinates臨時存當前位置之前的所有值绢陌，polyline每次替換為后一條

 if  let line = self.polyline  {
     self.mapView.remove(line)
 }
 temporarytraceCoordinates.append(traceCoordinates[uptateIndex])
 polyline = MAPolyline(coordinates: &temporarytraceCoordinates, count: UInt(temporarytraceCoordinates.count))

代理方法里改變線條顏色

func mapView(_ mapView: MAMapView!, rendererFor overlay: MAOverlay!) -> MAOverlayRenderer! {
        if overlay.isKind(of: MAPolyline.self) {
            let renderer: MAPolylineRenderer = MAPolylineRenderer.init(polyline: overlay as! MAPolyline!)
            renderer.lineWidth = 8.0
            renderer.strokeColor = UIColor(red: 0, green: 230, blue: 239, alpha: 1)
            return renderer
        }
        return nil
 }

poiAnnotationView?.image 設(shè)置運動物體的圖片

    func mapView(_ mapView: MAMapView, viewFor annotation: MAAnnotation) -> MAAnnotationView? {
        
        if annotation.isEqual(myLocation) {
            let annotationIdentifier = "myLcoationIdentifier"
            var poiAnnotationView = mapView.dequeueReusableAnnotationView(withIdentifier: annotationIdentifier)
            if poiAnnotationView == nil {
                poiAnnotationView = MAAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
            }
            poiAnnotationView?.image = UIImage(named: "userHeadimage")
            poiAnnotationView?.imageView.layer.cornerRadius = 20
            poiAnnotationView?.imageView.layer.masksToBounds = true
            poiAnnotationView?.imageView.backgroundColor = UIColor.white
            poiAnnotationView?.imageView.layer.borderColor = UIColor.white.cgColor
            poiAnnotationView?.imageView.layer.borderWidth = 2
            poiAnnotationView!.canShowCallout = false
            return poiAnnotationView
        }
        return nil
    }

發(fā)現(xiàn)bug或好的建議歡迎 issues or Email Yvente@163.com