/**
* according to the specified coordinate points to generate a polyline
*@param coords Specifies an array of latitude and longitude coordinate points
*@param count number of coordinate points
*@returnThe newly generated polyline object
*/

• (BMKPolyline)polylineWithCoordinates:(CLLocationCoordinate2D)coords count:(NSUInteger)count;

for (NSInteger index = 0; index < array.count; Index plus)

//Generate polylines
 BMKPolyline* polyline = [BMKPolyline polylineWithCoordinates:coors count:2];
 [_mapView addOverlay:polyline];

bracket

/**
* Generate corresponding View according to overlay
* @ paramamView mapview
*@param overlay Specified overlay
*@returnThe resulting overlay View
*/
(BMKOverlayView)mapView:(BMKMapView)mapView viewForOverlay:(id <BMKOverlay>)overlay;

//proxy method.

• (BMKOverlayView)mapView:(BMKMapView)map viewForOverlay:(id<BMKOverlay>)overlay
  bracket
  if ([overlay isKindOfClass:[BMKPolyline class]]) {

  //Create the polyline view I want
   MaintenanceBMKPolylineView* polylineView = [[MaintenanceBMKPolylineView alloc] initWithOverlay:overlay];
   polylineView.fillColor = [[UIColor cyanColor] colorWithAlphaComponent:1];
   polylineView.strokeColor = [[UIColor blueColor] colorWithAlphaComponent:0.7];
   polylineView.lineWidth = 5.0;
   //What I need is that this Array corresponds to data.
   polylineView.infoArray = [[NSMutableArray alloc] initWithObjects:_maintenancePolylineViewArray[_maintenancePolylineViewIndex-1], nil];
   return polylineView;
   bracket

  bracket

@interfaceMaintenanceBMKPolylineView : BMKPolylineView
bracket
bracket
@property (nonatomic , strong) NSMutableArray *infoArray; //Store information of line segments
@end

@implementation MaintenanceBMKPolylineView
@end

Question:
Count if = 10;

for (NSInteger index = 0; index < array.count; Index plus)

//Record the polyline data with an array.
 [_maintenancePolylineViewInfoArray addObject:dic];
 //Generate polylines
 BMKPolyline* polyline = [BMKPolyline polylineWithCoordinates:coors count:2];
 [_mapView addOverlay:polyline];

bracket

Now the loop calls 10 times to create a polyline.
If the currently created polyline 0 is outside the mobile phone screen due to longitude and latitude. Then the user will only call after moving the screen
(BMKOverlayView)mapView:(BMKMapView)mapView viewForOverlay:(id <BMKOverlay>)overlay; Method to generate the corresponding polylineView. Draw that line segment.

In the loop, I recorded the contents of 10 polylines with _ maintencepolylineviewinfoarray.
_maintenancePolylineViewInfoArray{A,B,C,D,E…};

Excuse me, how can I make the values in _ maintencepolylineviewinfoarray correspond to every polyline I create? Let each element of _ maintainancelinkviewinfoArray correspond to infoarray of MaintenanceBMKPolylineView in the proxy method.