我并不常常对此有任何疑问。
我刚回到Objective-C,让我头疼。
我的单身人士.h
@interface BFTDataHandler : NSObject
+ (BFTDataHandler *)sharedInstance;
@property BOOL *initialLogin;
@property BOOL *PPAccepted;
@property(nonatomic, retain) NSString *Username;
@property(assign) NSString *EDEmail;
@property(nonatomic, retain) NSString *UID;
@property(assign) NSString *Longitude;
@property(assign) NSString *Latitude;
@end
My Singleton .m
#import "BFTDataHandler.h"
@implementation BFTDataHandler
-(id)init
{
self = [super init];
if (self) {
//initlize data
_Username = nil;
_EDEmail = nil;
_UID = nil;
_Longitude = nil;
_Latitude = nil;
_initialLogin = false;
_PPAccepted = false;
}
return self;
}
+ (BFTDataHandler *)sharedInstance
{
static BFTDataHandler *_sharedInstance = nil;
static dispatch_once_t onceSecurePredicate;
dispatch_once(&onceSecurePredicate,^
{
_sharedInstance = [[self alloc] init];
});
return _sharedInstance;
}
我将尝试访问PPAccepted BOOL并继续返回NULL
NSLog(@"%s", [[BFTDataHandler sharedInstance] PPAccepted]);
return *[[BFTDataHandler sharedInstance]PPAccepted];
我无法弄清楚这个问题,提前感谢帮助
答案 0 :(得分:1)
@property BOOL *initialLogin;
虽然创建一个指向BOOL
的指针的属性当然是可能的,但在这种情况下,您似乎要将其声明为BOOL
而不是BOOL*
。请尝试更改您的代码:
@property BOOL initialLogin; // note that the '*' has been removed
@property BOOL PPAccepted;
BOOL
是标量类型,而不是类,因此您不需要使用指针引用BOOL
。