引导页 + 定时器
#import "ViewController.h"
#import "SecViewController.h"
@interface ViewController ()<UIScrollviewDelegate>
{
UIScrollView *scroll; //滚动视图
NSArray *imgArr; //图片数组
UIPageControl *page; //分页控件
NSTimer *theTime;
NSInteger thePageTime;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//设置背景颜色
self.view.backgroundColor = [UIColor cyanColor];
//创建滚动视图
scroll = [[UIScrollView alloc] initWithFrame:self.view.frame];
//设置代理
scroll.delegate = self;
//将滚动视图添加到视图上
[self.view addSubview:scroll];
//创建图片数组
imgArr = @[@"1.jpg",@"2.jpg",@"3.jpg",@"4.jpg"];
//使用for循环设置图片
for (int i=0; i<4; i++) {
//创建图片框
UIImageView *image = [[UIImageView alloc]initWithFrame:CGRectMake(self.view.frame.size.width * i, 0, self.view.frame.size.width, self.view.frame.size.height)];
//设置图片
image.image = [UIImage imageNamed:imgArr[i]];
//允许与用户交互
image.userInteractionEnabled = YES;
//将图片添加到滚动视图
[scroll addSubview:image];
/**
if (i == 3)
{
// 创建立即体验按钮
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake((self.view.frame.size.width - 100)/2, 600, 100, 44);
[btn setTitle:@"立即体验" forState:UIControlStateNormal];
// btn.backgroundColor = [UIColor cyanColor];
// 给按钮添加点击事件
[btn addTarget:self action:@selector(didClickBtn) forControlEvents:UIControlEventTouchUpInside];
// 设置圆角
btn.layer.cornerRadius = 8;
btn.layer.masksToBounds = YES;
// 设置边框
btn.layer.borderWidth = 1;
btn.layer.borderColor = [UIColor cyanColor].CGColor;
// 将按钮添加到图片上
[image addSubview:btn];
}
*/
}
//设置滚动范围
scroll.contentSize = CGSizeMake(self.view.frame.size.width*4, self.view.frame.size.height);
//取消弹簧效果
scroll.bounces = NO;
//设置分页效果
scroll.pagingEnabled = YES;
//隐藏水平滚动条
scroll.showsHorizontalScrollIndicator = NO;
//创建分页控件
page = [[UIPageControl alloc] initWithFrame:CGRectMake((self.view.frame.size.width - 100)/2, self.view.frame.size.height-100, 100, 30)];
//设置页数
page.numberOfPages = 4;
//设置页码颜色
page.pageIndicatorTintColor = [UIColor redColor];
//设置当前页码颜色
page.currentPageIndicatorTintColor = [UIColor blackColor];
//添加到视图
[self.view addSubview:page];
//记录当前的图片
thePageTime = page.currentPage;
//创建定时器
theTime = [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(Scroll) userInfo:nil repeats:YES];
}
//滚动视图协议的方法
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
//将滚动的页数和滚动视图关联
page.currentPage = scroll.contentOffset.x/self.view.frame.size.width;
}
//定时器方法
-(void)Scroll{
thePageTime++;
if (thePageTime >= imgArr.count) {
thePageTime = 3;
[theTime invalidate];
theTime = nil;
[self presentViewController:[SecViewController new] animated:YES completion:nil];
}
//计算滚动视图的偏移量
[scroll setContentOffset:CGPointMake(thePageTime * scroll.frame.size.width, 0) animated:YES];
}
-(void)didClickBtn{
}
@end
