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我想使用單例存儲將在多個視圖控制器中使用的變量。我需要能夠獲取變量並設置它們。如何在單例中調用一個方法來更改存儲在單例中的變量。嘗試使用方法更改單身中的變量
total+=1079;
[var setTotal:total];
其中var是
static Singleton *var = nil;
我需要更新的總髮送到單內setTotal方法。但是當我這樣做時,setTotal方法永遠不會被訪問。 get方法工作,但setTotal方法不工作。請讓我知道該怎麼做。下面是我的一些源代碼
//
// Singleton.m
// Rolo
//
// Created by on 6/28/12.
// Copyright (c) 2012 Johnny Cox. All rights reserved.
//
#import "Singleton.h"
@implementation Singleton
@synthesize total,tax,final;
#pragma mark Singleton Methods
+ (Singleton *)sharedManager
{
static Singleton *sharedInstance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[Singleton alloc] init];
// Do any other initialisation stuff here
});
return sharedInstance;
}
+(void) setTotal:(double) tot
{
Singleton *shared = [Singleton sharedManager];
shared.total = tot;
NSLog(@"hello");
}
+(double) getTotal
{
Singleton *shared = [Singleton sharedManager];
NSLog(@"%f",shared.total);
return shared.total;
}
+(double) getTax
{
Singleton *shared = [Singleton sharedManager];
NSLog(@"%f",shared.tax);
return shared.tax;
}
@end
//
// Singleton.h
// Rolo
//
// Created by on 6/28/12.
// Copyright (c) 2012 Johnny Cox. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Singleton : NSObject
@property (nonatomic, assign) double total;
@property (nonatomic, assign) double tax;
@property (nonatomic, assign) double final;
+ (id)sharedManager;
+(double) getTotal;
+(void) setTotal;
+(double) getTax;
@end
謝謝你,固定我的問題。 –