如何优雅接入腾讯地图SDK公交路线规划2?
前言
继续上一次的Demo,本次添加了同一路线的多条不同的公交线路展示,默认显示第0条。并且通过点击公交路线来切换选中的路线。
上篇参考:如何优雅接入腾讯地图SDK公交路线规划?
使用场景
公交路线规划
准备
路线切换
1、创建QPolyline的子类,用于区分步行部分和公交部分。
@interface RoutePlanWalkingPolyline : QPolyline
@end
@interface RoutePlanBusingPolyline : QPolyline
// 判断当前路线是否已经被选中
@property (nonatomic, assign) BOOL isSelected;
@end
2、在创建路线Mode时,通过判断路线的种类来创建不同的模型,并且默认选中第0条路线。
/*
1. 默认选择第一个公交车线路
2. 当前公交车线路 alpha = 1,有箭头
3. 备用公交车线路 alpha = 0.5, 无箭头
4. 点击备用公交车线路可以切换
*/
// 驾车蚯蚓线
// 遍历所有驾车路线
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];
}
3、在添加折线视图时,额外添加判断当前的公交模型是否已经被选中的步骤。
RoutePlanBusingPolyline *busingPolyline = (RoutePlanBusingPolyline *)overlay;
// 路线箭头
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;
}
4、最后,监听Overlay的点击方法,并判断回调的Overlay是否为公交路线的数据模型,然后选中该模型,取消选中其他的模型。
- (void)mapView:(QMapView *)mapView didTapOverlay:(id<QOverlay>)overlay {
// 判断是否是路线
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) {
// 选中:实心颜色
busingPolyline.isSelected = YES;
polylineView.strokeColor = [UIColor colorWithRed:1 green:0 blue:0 alpha:0.5];
polylineView.zIndex = 1;
polylineView.drawSymbol = YES;
} else {
// 未选中:虚色
busingPolyline.isSelected = NO;
polylineView.strokeColor = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5];
polylineView.zIndex = 0;
polylineView.drawSymbol = NO;
}
}
}
}
}
示例图
作者:面糊
链接:https://www.jianshu.com/p/74b6b7b50352
来源:简书
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