字符串生成Class&Selector&Protocol

NSClassFromString批量化初始化

有时候一个一个类初始化过于麻烦，比如很多的subview

可以用字符串控制类名，然后根据字符串进行初始化等操作

这里属于Runtime的范畴，根本机制是由于OC的消息机制

NSArray *StrArray = @[@"class0",
                   @"class1",
                   @"class2",
                   @"class3",
                   @"class4"];
for (int i = 0; i < array.count; ++i) {
    id object = [[NSClassFromString([array objectAtIndex:i]) alloc]init];
    [ClassArray addObject:object];
}

苹果头文件NSObCRuntime.h中摘抄

FOUNDATION_EXPORT NSString *NSStringFromSelector(SEL aSelector);
FOUNDATION_EXPORT SEL NSSelectorFromString(NSString *aSelectorName);

FOUNDATION_EXPORT NSString *NSStringFromClass(Class aClass);
FOUNDATION_EXPORT Class __nullable NSClassFromString(NSString *aClassName);

FOUNDATION_EXPORT NSString *NSStringFromProtocol(Protocol *proto) NS_AVAILABLE(10_5, 2_0);
FOUNDATION_EXPORT Protocol * __nullable NSProtocolFromString(NSString *namestr)NS_AVAILABLE(10_5, 2_0);

赏

请问老板还招人么(/ω＼)

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