IOS中类的创建

1.创建类，类名为SetClass

在SetClass.h文件中

#import <Foundation/Foundation.h>

@interface SetClass :NSObject{

    

}

-(void)setString:(NSString *)string;

+(void)staticSetString:(NSString *)newstring;

@end

在SetClass.m文件中

#import "SetClass.h"

@implementation SetClass

-(void)setString:(NSString *)string{

    NSLog(@"%@",string);

}

+(void)staticSetString:(NSString *)newstring{

    NSLog(@"%@",newstring);

    

}

@end

2.在MyViewController中引用类SetClass

#import "SetClass.h"

- (void)viewDidLoad

{

    [superviewDidLoad];

    SetClass *class=[[SetClass    alloc]init];

    [class  setString:@"set a string"];

    [SetClass      staticSetString:@"set a static class"];

}