小编kev*_*oza的帖子

Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c?

我可以使用多个else if语句,但是有没有更简单,更清晰的方法在objective-c中执行if(条件或其他条件..)？

出于某种原因,这个if语句给了我一个"Expected:before"令牌.

    if ([ [mine commodity] isEqualToString:@"Gold"] && [gold == YES])
    {
        [tempMine setAnnotationType:iProspectLiteAnnotationTypeGold];
        [mapView addAnnotation:tempMine];
    }

我有没有看到一些错字？

我需要访问mainViewController中包含的此方法中的用户位置

-(void)loadAnnotations{
[mapView removeAnnotations:mapView.annotations];

CLLocationCoordinate2D workingCoordinate;
workingCoordinate.latitude= //here i need the users latitude
workingCoordinate.longitude= //here i need the users longitude
NSLog(@" this is %@", workingCoordinate.latitude);
iProspectLiteAnnotation *tempMine = [[iProspectLiteAnnotation alloc] initWithCoordinate:workingCoordinate];
[tempMine setTitle:@"Present Location"];
[tempMine setAnnotationType:iProspectLiteAnnotationTypeUser];
[mapView addAnnotation:tempMine];
}

但是mainViewController已经设置为

<fipsideViewControllerDelegate>

我应该在头文件和实现文件中添加什么来轮询位置管理器以获取用户当前的纬度和经度？