【代码笔记】iOS-切换条

一，效果图。

二，工程图。

三，代码。

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController@end

 

RootViewController.m

#import "RootViewController.h"#import "TopIndexForMoreButton.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //添加切换栏    TopIndexForMoreButton* topView = [[TopIndexForMoreButton alloc] initWithFrame:CGRectMake(0, 100, 0, 0) delegate:self];    [self.view addSubview:topView];    }- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}