前言
繼續上一次的Demo,本次添加了同一路線的多條不一樣的公交線路展現,默認顯示第0條。而且經過點擊公交路線來切換選中的路線。atom
上篇參考:騰訊位置服務地圖SDK公交路線規劃應用示例url
使用場景
公交路線規劃.net
準備
騰訊位置服務iOS地圖SDKcode
路線切換
一、建立QPolyline的子類,用於區分步行部分和公交部分。blog
@interface RoutePlanWalkingPolyline : QPolyline @end
@interface RoutePlanBusingPolyline : QPolyline // 判斷當前路線是否已經被選中 @property (nonatomic, assign) BOOL isSelected; @end
二、在建立路線Mode時,經過判斷路線的種類來建立不一樣的模型,而且默認選中第0條路線。get
/* 1. 默認選擇第一個公交車線路 2. 當前公交車線路 alpha = 1,有箭頭 3. 備用公交車線路 alpha = 0.5, 無箭頭 4. 點擊備用公交車線路能夠切換 */ // 駕車蚯蚓線 // 遍歷全部駕車路線 for (int i = 0; i < plan.lines.count; i++) { QMSBusingRouteTransitLine *line = plan.lines[i]; CLLocationCoordinate2D coords[line.polyline.count]; for (int i = 0; i < line.polyline.count; i++) { NSValue *value = line.polyline[i]; CLLocationCoordinate2D coord = [value coordinateValue]; coords[i] = coord; } RoutePlanBusingPolyline *busPolyline = [[RoutePlanBusingPolyline alloc] initWithCoordinates:coords count:line.polyline.count]; busPolyline.isSelected = i==0 ? YES : NO; [self.mapView addOverlay:busPolyline]; [self.selectRouteOverlayArray addObject:busPolyline]; }
三、在添加折線視圖時,額外添加判斷當前的公交模型是否已經被選中的步驟。it
RoutePlanBusingPolyline *busingPolyline = (RoutePlanBusingPolyline *)overlay; // 路線箭頭 if (busingPolyline.isSelected) { polylineView.strokeColor = [UIColor colorWithRed:1 green:0 blue:0 alpha:0.5]; polylineView.drawSymbol = YES; polylineView.zIndex = 1; } else { polylineView.strokeColor = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5]; polylineView.drawSymbol = NO; polylineView.zIndex = 0; }
四、最後,監聽Overlay的點擊方法,並判斷回調的Overlay是否爲公交路線的數據模型,而後選中該模型,取消選中其餘的模型。io
- (void)mapView:(QMapView *)mapView didTapOverlay:(id<QOverlay>)overlay { // 判斷是不是路線 if ([overlay isKindOfClass:[RoutePlanBusingPolyline class]]) { for (QPolyline *polyline in self.selectRouteOverlayArray) { if ([polyline isKindOfClass:[RoutePlanBusingPolyline class]]) { RoutePlanBusingPolyline *busingPolyline = (RoutePlanBusingPolyline *)polyline; QTexturePolylineView *polylineView = (QTexturePolylineView *)[self.mapView viewForOverlay:busingPolyline]; if (busingPolyline == overlay) { // 選中:實心顏色 busingPolyline.isSelected = YES; polylineView.strokeColor = [UIColor colorWithRed:1 green:0 blue:0 alpha:0.5]; polylineView.zIndex = 1; polylineView.drawSymbol = YES; } else { // 未選中:虛色 busingPolyline.isSelected = NO; polylineView.strokeColor = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5]; polylineView.zIndex = 0; polylineView.drawSymbol = NO; } } } } }
示例圖
做者:麪糊class
連接:https://www.jianshu.com/p/74b6b7b50352mobile
來源:簡書
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