OBJECTIVE-C study notes-First day (2)

The protocol in Objective-c, equivalent to the interface in Java

Reference: http://www.cnblogs.com/zzy0471/p/3894307.html

A simple protocol to follow:

PersonProtocol.h

@protocol Agreement name < superior Agreement name >

@required

Methods that must be implemented

@optional

Optional method of implementation (can not be implemented)

@end

Before you follow the agreement, you need to introduce a protocol-written header file

Person.h

Class name < protocol name > represents all methods that follow this protocol and need to implement the @required part of the protocol.

PERSON.M Implementation Section

Use of the protocol:

Protocoltest, customizing a protocol test class

ProtocolTest.h

Protocoltest.m

Main.m

The protocol for the Test class, which points to the Protocol already implemented in the person.

Output:

OBJECTIVE-C study notes-First day (2)