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我有地图视图,我喜欢使用覆盖方法绘制线,我添加了两个位置的纬度和经度,当我按下按钮时画线但当我第二次按下新的我提供的坐标paire和新的线图覆盖,但以前的覆盖路径已消失,但我需要在同一地图上的previou路径也坚持覆盖线在iOS6中的地图视图
这里是我的代码。
- (IBAction)refreshMapMethod:(id)sender
{
int kk=[[NSUserDefaults standardUserDefaults]integerForKey:@"ham"];
if (kk==1)
{
CLLocationCoordinate2D coordinateArray[2];
coordinateArray[0] = CLLocationCoordinate2DMake(12.915181,+77.626055);
coordinateArray[1] = CLLocationCoordinate2DMake(12.892156, +77.582188);
self.routeLine = [MKPolyline polylineWithCoordinates:coordinateArray count:2];
[self.myMapView setVisibleMapRect:[self.routeLine boundingMapRect]];
[self.myMapView addOverlay:self.routeLine];
[[NSUserDefaults standardUserDefaults]setInteger:2 forKey:@"ham" ];
}
if (kk==2)
{
CLLocationCoordinate2D coordinateArray[2];
coordinateArray[0] = CLLocationCoordinate2DMake(12.892156,+77.426055);
coordinateArray[1] = CLLocationCoordinate2DMake(12.892156, +77.582188);
self.routeLine = [MKPolyline polylineWithCoordinates:coordinateArray count:2];
[self.myMapView setVisibleMapRect:[self.routeLine boundingMapRect]];
[self.myMapView addOverlay:self.routeLine];
[[NSUserDefaults standardUserDefaults]setInteger:3 forKey:@"ham" ];
}
if (kk==3)
{
CLLocationCoordinate2D coordinateArray[2];
coordinateArray[0] = CLLocationCoordinate2DMake(12.892156, +77.382188);
coordinateArray[1] = CLLocationCoordinate2DMake(12.892156, +77.282188);
self.routeLine = [MKPolyline polylineWithCoordinates:coordinateArray count:2];
[self.myMapView setVisibleMapRect:[self.routeLine boundingMapRect]];
[self.myMapView addOverlay:self.routeLine];
[[NSUserDefaults standardUserDefaults]setInteger:3 forKey:@"ham" ];
}
CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude= 12.915181;
zoomLocation.longitude=77.626055;
MKCoordinateRegion viewRegion=MKCoordinateRegionMakeWithDistance(zoomLocation, 3*METERS_PER_MILE, 3*METERS_PER_MILE);
[self.myMapView setRegion:viewRegion animated:YES];
[[NSUserDefaults standardUserDefaults]setInteger:2 forKey:@"change" ];
}
调用覆盖方法..
-(MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id<MKOverlay>)overlay
{
if(overlay == self.routeLine)
{
if(nil == self.routeLineView)
{
self.routeLineView = [[MKPolylineView alloc] initWithPolyline:self.routeLine];
self.routeLineView.fillColor = [UIColor redColor];
self.routeLineView.strokeColor = [UIColor redColor];
self.routeLineView.lineWidth = 5;
}
return self.routeLineView;
}
return nil;
}
请给我提供在TYE相同方式或其他任何替代方式的解决方案。
比你。