.h 中
+(id)shareInstance;
.m 中
+(id)shareInstance {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{//加锁
_instance = [[self alloc] init];
});
return _instance;
}
+(id)shareInstance;
+(id)shareInstance {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{//加锁
_instance = [[self alloc] init];
});
return _instance;
}
本文标题：ios 单例模式创建
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