iOS開發常用宏定義

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// 載入本地xib

#define kMainBundleLoadXib(xibName) [[[NSBundle mainBundle] loadNibNamed:xibName owner:nil options:nil] lastObject]

 

 

單利定義

#pragma mark - 執行個體定義#define SingletenInterface + (instancetype)sharedInstance;#pragma mark - 定義單例代碼塊#define SingletenImpl static id _instace; + (id)allocWithZone:(struct _NSZone *)zone {     static dispatch_once_t onceToken;     dispatch_once(&onceToken, ^{         _instace = [super allocWithZone:zone];     });     return _instace; } - (id)copyWithZone:(NSZone *)zone {     return _instace; } + (instancetype)sharedInstance {     static dispatch_once_t onceToken;     dispatch_once(&onceToken, ^{         _instace = [[self alloc] init];     });     return _instace; } 

 

iOS開發常用宏定義