iOS - 高德地图将地图的多点连线

@property (nonatomic, strong) MAPolyline *commonPoly;

#pragma mark -- 将地图的点连线
- (void)createBrokenLine
{
    [self.mapView removeOverlay:_commonPoly];
    CLLocationCoordinate2D commonPolyLineCoords[self.taskList.count];
    for (int i =; i < self.taskList.count; i ++) {
        SDHomeNewTaskModel *model = self.taskList[i];
        commonPolyLineCoords[i].longitude = model.lng;
        commonPolyLineCoords[i].latitude = model.lat;
    }
    //构造折线对象
     _commonPoly = [MAPolyline polylineWithCoordinates:commonPolyLineCoords count:self.taskList.count];
    //在地图上添加折线对象
    [self.mapView addOverlay:_commonPoly];
}
- (MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id <MAOverlay>)overlay
{
    if ([overlay isKindOfClass:[MAPolyline class]])
    {
        MAPolylineRenderer *polylineRenderer = [[MAPolylineRenderer alloc] initWithPolyline:overlay];

        polylineRenderer.lineWidth    = .f;
        polylineRenderer.strokeColor  = [UIColor colorWithRed: green: blue: alpha:0.6];
        polylineRenderer.lineJoinType = kMALineJoinRound;
        polylineRenderer.lineCapType  = kMALineCapRound;

        return polylineRenderer;
    }
    return nil;
}
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