刷新我的地图查看
我有一个带有图钉的地图视图，以及我和地图上其他点之间的 CLLocation 和 getDistance 的以下代码：
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation{
Koordinate *kunde = [[Koordinate alloc] init];
kundenPoints = [[NSMutableArray array] retain];
for(int i = 0; i<[eventPoints count]; i++){
kunde = [eventPoints objectAtIndex:i];
CLLocation *userLoc = [[CLLocation alloc] initWithLatitude:kunde.latitude longitude:kunde.longtitude];
double distance = [newLocation getDistanceFrom:userLoc] / 1000;
if(distance <= 100){
[kundenPoints addObject:kunde];
}else {
}
}
[mapView addAnnotations:kundenPoints];
}
但是如何实现在单击按钮时刷新地图的方法？ 当我想要的时候，我总是能把别针放在我身边。 按钮不是问题，只有刷新的问题！
我希望有人能帮助我？
此致 马可
i have a mapView with pins on it, and the following code for CLLocation and getDistance between me and another points on the map:
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation{
Koordinate *kunde = [[Koordinate alloc] init];
kundenPoints = [[NSMutableArray array] retain];
for(int i = 0; i<[eventPoints count]; i++){
kunde = [eventPoints objectAtIndex:i];
CLLocation *userLoc = [[CLLocation alloc] initWithLatitude:kunde.latitude longitude:kunde.longtitude];
double distance = [newLocation getDistanceFrom:userLoc] / 1000;
if(distance <= 100){
[kundenPoints addObject:kunde];
}else {
}
}
[mapView addAnnotations:kundenPoints];
}
but how can i implement a method that refreshes the map when i tab on a button?
that i always get the pins around me when i want.
the button is not the problem, only the refresh!
i hope someone could help me??
best regards
Marco
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评论（2）
据我所知，没有removeAllAnnotations这样的东西，至少在iOS4 SDK中没有...尽管您可以使用与
覆盖层相同的方法
快速修复它，但到目前为止这是我发现的最好方法。
as far as I know there is no such a thing as removeAllAnnotations, at least not in iOS4 SDK... although you can quickly fix it using
same goes for overlays
so far is the best way I've found to do it.
只需
removeAllAnnotations到您的地图视图并添加新的，这将刷新地图上的注释。Just
removeAllAnnotationsto your mapView and add the new ones, this will refresh the annotations on your map.