我想将添加的注释移动到newlocation,下面是代码,而在其他部分我想要这样做:
在之前的代码中,添加了新注释并删除了之前的注释,但它会受到方向程度的影响。所以,我想移动注释而不添加新的注释。
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
if (newLocation.horizontalAccuracy < 0)
return;
if (!newLocation)
return;
static BOOL annotationAdded = NO;
self.currentLocation = newLocation;
self.previousLocation = oldLocation;
if(self.currentLocation != nil)
{
CLLocationCoordinate2D location = CLLocationCoordinate2DMake(self.currentLocation.coordinate.latitude, self.currentLocation.coordinate.longitude);
myAnnotation = [[MyAnnotation alloc] initWithCoordinates:location title:@"Current Location" subTitle:nil];
if (!annotationAdded)
{
annotationAdded = YES;
[self.myMapView addAnnotation:myAnnotation];
}
else
{
// Here i want to move added annotation to newlocation coordinates
}
}
}
答案 0 :(得分:0)
它的工作方式是,您使用注释为地图提供信息,然后它会触发在屏幕上绘制注释的功能。一旦它出现在屏幕上,基本上没有办法移动注释,而是删除它并添加一个带有新坐标的新注释。