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[操作系统]【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

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#import <UIKit/UIKit.h>#import "SVSegmentedControl.h"@interface RootViewController : UIViewController<UIScrollViewDelegate>{  UIScrollView *scrollView1;  UIScrollView *scrollView2;  UIPageControl *pag;  NSMutableArray *dataArray;  SVSegmentedControl *options;}@end
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RootViewController.m

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#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.}
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