objective-c 从实例中获取类的名称
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Getting name of the class from an instance
提问by Robin
I have the following problem: I get an instance of a class passed and want to know the name of the class of this instance. How to get this?
我有以下问题：我得到一个类的实例，想知道这个实例的类的名称。如何得到这个？
回答by CiNN
NSStringFromClass([instance class])should do the trick.
NSStringFromClass([instance class])应该做的伎俩。
回答by kubi
if all you want to do is test an object to see if it's a type of a certain Class
如果你想做的只是测试一个对象，看看它是否是某个类的类型
BOOL test = [self isKindOfClass:[SomeClass class]];
回答by Katedral Pillon
From within the class itself
从类本身内部
-(NSString *) className
{
return NSStringFromClass([self class]);
}
回答by ealee
Just add a category:
只需添加一个类别：
NSObject+Extensions.h
- (NSString *)className;
NSObject+Extensions.m
- (NSString *)className {
return NSStringFromClass(self.class);
}
Then use the following code:
然后使用以下代码：
NSString *className = [[SomeObject new] className];
or even:
甚至：
NSString *className = SomeObject.new.className;
To use it anywhere add the category to YourProject.pch file.
要在任何地方使用它，请将类别添加到 YourProject.pch 文件中。
回答by Lal Krishna
OBJC:
对象：
NSStringFromClass([instance class])
SWIFT
迅速
From instance:
从实例：
String(describing: YourType.self)
From type:
从类型：
String(describing: self)
回答by Jeremie D
You can also use [[self class] description]
你也可以使用 [[self class] description]
回答by Roman Barzyczak
If you are looking how get classname in Swift you can use reflect to get information about object.
如果您正在寻找如何在 Swift 中获取类名，您可以使用反射来获取有关对象的信息。
let tokens = split(reflect(self).summary, { ##代码## == "." })
if let typeName = tokens.last {
println(typeName)
}
