iOS New Year review

1. How to define an OC class

@interface Class Name: Parent class name

{

instance variables (not recommended in. h files, written in the extension of. m)

If the subclass is to inherit, it must be written in. h

}

@property

Method

@end

2. Attributes and instance variables

property is a set of getter and setter

3. Initialization method

-(Id/instancetype) initwithxxx

Specifying the initialization method

4. Convenience Builder

Special initialization method for Alloc and Autorelese (easy memory management)

5.Category

Classification, extension class. More than a good existence.

Syntax format

@interface class name (category name)

@end

@implementation class name (category name)

@end

6. One OC Class (Cup)

//

CUP.h

CUP

//

Created by Carl_fang on 15/3/2.

Copyright (c) 2015 Carl_fang. All rights reserved.

//

#import <Foundation/Foundation.h>

@interface Cup:nsobject

@property (nonatomic) float price;

-(Instancetype) Initwithvolume: (Nsinteger) Volume Brand: (NSString *) brand;

+ (CUP *) Cupwithvolume: (Nsinteger) Brand: (NSString *) brand;

-(void) Fillinwater: (Nsinteger) volume;

@end

7. Memory Management

Focus: Reference counting

Autorelese

iOS New Year review