【代码笔记】底下滚动，上面标题栏也会跟着变动

一，效果图。

二，工程图。

三，代码。

RootViewController.h

#import <UIKit/UIKit.h>
#import "SVSegmentedControl.h"

@interface RootViewController : UIViewController <UIScrollViewDelegate> { UIScrollView *scrollView1; UIScrollView *scrollView2; UIPageControl *pag; NSMutableArray *dataArray; SVSegmentedControl *options; } @end

 

RootViewController.m

#import "RootViewController.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. //初始化背景图
 [self initBackGroundView]; } #pragma -mark -functions
-(void)initBackGroundView { //隐藏导航条
    self.navigationController.navigationBarHidden=YES; //底部的滚动条
    scrollView1=[[UIScrollView alloc]init]; scrollView1.frame=CGRectMake(0, 40, 320, 400); scrollView1.backgroundColor=[UIColor grayColor]; scrollView1.delegate=self; scrollView1.pagingEnabled=YES; scrollView1.contentSize=CGSizeMake(320*2, 376); [self.view addSubview:scrollView1]; //第一页的内容
    UIView *v1=[[UIView alloc]init]; [v1 setFrame:CGRectMake(0, 0, 320, 376)]; v1.backgroundColor=[UIColor redColor]; [scrollView1 addSubview:v1]; //第二页的内容
    UIView *v2=[[UIView alloc]init]; v2.frame=CGRectMake(320, 0, 320, 376); v2.backgroundColor=[UIColor blueColor]; [scrollView1 addSubview:v2]; //下面指示页的圆点
    pag=[[UIPageControl alloc]initWithFrame:CGRectMake(160, 400, 0, 0)]; pag.numberOfPages=2; pag.currentPage=0; [self.view addSubview:pag]; //上面的滑动图标
    options = [[SVSegmentedControl alloc] initWithSectionTitles:[NSArray arrayWithObjects:@"购车应用",@"车主应用", nil]]; [options addTarget:self action:@selector(actiBtClick:) forControlEvents:UIControlEventValueChanged]; [options setBackgroundImage:[UIImage imageNamed:@"switchBg.png"]]; options.center=CGPointMake(160, 50); options.crossFadeLabelsOnDrag=YES; options.selectedIndex=0; options.textColor=[UIColor blackColor]; options.LKWidth=120; options.textShadowOffset=CGSizeMake(0, 0); options.textShadowColor=[UIColor clearColor]; options.height=30; options.thumb.backgroundImage=[UIImage imageNamed:@"按钮-2.png"]; options.thumb.highlightedBackgroundImage=[UIImage imageNamed:@"按钮-2.png"]; options.thumb.textShadowColor=[UIColor clearColor]; options.thumb.textShadowOffset=CGSizeMake(0, 0); [self.view addSubview:options]; } #pragma -mark -doClickActions
- (void)actiBtClick:(SVSegmentedControl *)sender { if(sender.selectedIndex==0) { [scrollView1 setContentOffset:CGPointMake(0, scrollView1.contentOffset.y) animated:YES]; pag.currentPage=0; } else if(sender.selectedIndex==1) { [scrollView1 setContentOffset:CGPointMake(320, scrollView1.contentOffset.y) animated:YES]; pag.currentPage=1; } } #pragma -mark -scrollViewDelegate
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { if(scrollView1.contentOffset.x==0) { pag.currentPage=0; [options moveThumbToIndex:0 animate:YES]; } else if(scrollView1.contentOffset.x==320) { pag.currentPage=1; [options moveThumbToIndex:1 animate:YES]; } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.
}