我想通過從JSON數組中拉取它來爲我的MKAnnotation添加一個字幕。我能夠獲得標題,並與下面的視圖控制器進行協調,但我無法弄清楚如何從JSON密鑰「cityName」中獲取字幕。任何幫助將是偉大的!謝謝!從JSON數組中拉取MKAnnotation字幕
MapViewController.m
location.latitude = [dictionary[@"placeLatitude"] doubleValue];
location.longitude = [dictionary[@"placeLongitude"] doubleValue];
newAnnotation = [[MapViewAnnotation alloc] initWithTitle:dictionary[@"placeName"]
andCoordinate:location];
MapViewAnnotation.h
@interface MapViewAnnotation : NSObject <MKAnnotation> {
NSString *title;
CLLocationCoordinate2D coordinate;
}
@property (nonatomic, copy) NSString *title;
@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *subtitle;
- (id)initWithTitle:(NSString *)ttl andCoordinate:(CLLocationCoordinate2D)c2d;
@end
MapViewAnnotation.m
#import "MapViewAnnotation.h"
@implementation MapViewAnnotation
@synthesize title, coordinate, subtitle;
- (id)initWithTitle:(NSString *)ttl andCoordinate:(CLLocationCoordinate2D)c2d {
title = ttl;
coordinate = c2d;
subtitle = [SUBTITLE PULLED FROM JSON]
return self;
}
@end
這一行 「 - (ID)initWithTitle:(的NSString *)TTL andCoordinate:(CLLocationCoordinate2D)C2D」 能」我只指定一個ttl和一個c2d變量? – Brandon 2013-02-12 08:24:10
不,你可以添加你的'subtitle'屬性:' - (id)initWithTitle:(NSString *)ttl andCoordinate :(CLLocationCoordinate2D)c2d andSubtitle:(NSString *)subTitle'。請小心在'.h'中更改您的方法名稱 – Yaman 2013-02-12 08:25:33
謝謝Yaman,這可能是新手,但我能否傳遞其他字符串?可以說我想要一個可以無形傳遞的自定義文件 – Brandon 2013-02-12 08:28:28