#import "ViewController.h"
@interface ViewController ()<UIScrollerViewDelegate>
{
UIScrollView *scroll;? //滾動(dòng)視圖
NSArray *arr;? //數(shù)組
UIPageControl *p;? //分頁(yè)控件
NSInteger pagecount; //記錄頁(yè)數(shù)
NSTimer *timer; //計(jì)時(shí)器
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//獲取屏幕的寬
float width = self.view.frame.size.width;
//獲取屏幕的高
float height = self.view.frame.size.height;
//創(chuàng)建滾動(dòng)視圖
scroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, width, height)];
float x = 0.0;
for (int i = 0 ; i < 4; i++ )
{
//創(chuàng)建圖片框
UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(x, 0, width, height)];
//創(chuàng)建圖片數(shù)組
arr = @[[UIImage imageNamed:@"1.jpg"],[UIImage imageNamed:@"2.jpg"],[UIImage imageNamed:@"3.jpg"],[UIImage imageNamed:@"4.jpg"]];
//將圖片添加到圖片框上
imgView.image = arr[i];
//將圖片框添加到滾動(dòng)視圖上
[scroll addSubview:imgView];
//疊加
x += width;
}
//設(shè)置滾動(dòng)視圖的大小
scroll.contentSize = CGSizeMake(width * 4, height);
//去掉彈簧效果
scroll.bounces = NO;
//隱藏滾動(dòng)條
scroll.showsHorizontalScrollIndicator = NO;
//設(shè)置按頁(yè)滾動(dòng)
scroll.pagingEnabled = YES;
scroll.delegate = self;
//將滾動(dòng)視圖添加到視圖上
[self.view addSubview:scroll];
//創(chuàng)建分頁(yè)控件
p = [[UIPageControl alloc]initWithFrame:CGRectMake((width - 50)/2, 680, 100, 30)];
//設(shè)置頁(yè)碼個(gè)數(shù)
p.numberOfPages = 4;
//設(shè)置頁(yè)碼初始頁(yè)
p.currentPage = 0;
//設(shè)置頁(yè)碼顏色
p.pageIndicatorTintColor = [UIColor redColor];
//設(shè)置當(dāng)前頁(yè)碼的顏色
p.currentPageIndicatorTintColor = [UIColor cyanColor];
//將分頁(yè)控件添加到視圖上
[self.view addSubview:p];
//記錄當(dāng)前頁(yè)面的圖片頁(yè)數(shù)
pagecount = p.currentPage;
//創(chuàng)建定時(shí)器
timer = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(scroll) userInfo:nil repeats:YES];
}
//滾動(dòng)方法
-(void)scroll
{
pagecount++;
if (pagecount >= arr.count)
{
pagecount = 0;
}
//設(shè)置滾動(dòng)視圖的偏移量
[scroll setContentOffset:CGPointMake(pagecount * scroll.frame.size.width, 0) animated:YES];
}
//在滾動(dòng)的時(shí)候調(diào)用此方法
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
//當(dāng)前的偏移量
CGPoint point = scrollView.contentOffset;
//獲取當(dāng)前所在的位置
p.currentPage = point.x / scrollView.frame.size.width;
//創(chuàng)建立即體驗(yàn)按鈕
UIButton *btn = [[UIButton alloc]init];
//判斷滾動(dòng)到第四頁(yè)的時(shí)候 停止計(jì)時(shí)器 顯示立即體檢按鈕
if (p.currentPage == 3)
{
//停止定時(shí)器
[timer invalidate];
btn.frame = CGRectMake(110, 600, 200, 40);
//設(shè)置按鈕背景顏色
btn.backgroundColor = [UIColor clearColor];
//設(shè)置邊框
btn.layer.borderWidth = 1;
btn.layer.backgroundColor = [UIColor greenColor].CGColor;
[btn setTitle:@"立即體驗(yàn)" forState:UIControlStateNormal];
//設(shè)置文字顏色
[btn setTitleColor:[UIColor orangeColor] forState:UIControlStateNormal];
//設(shè)置圓角
btn.layer.cornerRadius = 8;
btn.layer.masksToBounds = YES;
//給按鈕添加點(diǎn)擊事件
[btn addTarget:self action:@selector(anniu) forControlEvents:UIControlEventTouchUpInside];
//將按鈕添加到視圖上
[self.view addSubview:btn];
//設(shè)置禁止用戶交互
scrollView.userInteractionEnabled = NO;
}
}
-(void)anniu
{
NSLog(@"走起");
}
//隱藏狀態(tài)欄
-(BOOL)prefersStatusBarHidden
{
return YES;
}
@end
