IOS Reflex Action

1. Determine whether an object is of a certain type: (The parent class will also return Yes)

class ]

2. Determine whether an object is an instantiated object of a class (the parent class does not return YES)

class ]

3. Determine if an agreement has been implemented

Conformstoprotocol: @protocol (nscopying)

4. Determine if there is a method (can respond to this method)

Respondstoselector: @selector (showmessage:)

Dynamically generate a class

5. Generate a class from a class name

nsstring *[email protected] "Person" ; Class myclass=nsclassfromstring (className)

You can initialize a person object with MyClass

Person *person2=[[myclass Alloc]init]

6. Convert Type to String

class ]

7. Call the method based on the method name string

nsstring *[email protected] "ShowMessage:"//Method name string
SEL myselector=nsselectorfromstring (methodName);  To create a Sel object from a method name string

Performselector:myselector withobject:@"hello,world!"//Execute Method 8. Convert method to String

Nsstringfromselector (Myselector)

IOS Reflex Action