iOS 單例傳值

iOS 單例傳值

寫一個類 起作用是 傳值

#import

@interface singleton : NSObject

+(singleton *)shareData;

@property (strong, nonatomic) NSString *value;

@end

#import "singleton.h"

@implementation singleton

static singleton *singletonData = nil;

+(singleton *)shareData {

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

singletonData = [[singleton alloc] init];

});

return singletonData;

}

-(id)init {

if (self = [super init]) {

}

return self;

}

@end

如果你 要把 值 從A 傳倒B 你 要將要傳得值賦給 Value

singleton *oneS = [singleton shareData];

oneS.value = @"my name is caomao";

NSLog(@"oneS.value---->%@",oneS.value);

值已經賦好啦 。。。在就是 在你所需要的類調用出 就OK 啦這是在B類的調用

NSString *strB = [singleton shareData].value];