@interface ViewController (){
NSArray * imgArr;
UIScrollView * scrollV;
UIPageControl * page;
NSTimer * timer;
int k;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
timer = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(change) userInfo:nil repeats:YES];
imgArr = @[@"1",@"2",@"3",@"4"];
//新特性界面
//滚动视图
scrollV = [[UIScrollView alloc]initWithFrame:self.view.frame];
//
scrollV.backgroundColor=[UIColor redColor];
//设置滚动范围
scrollV.contentSize=CGSizeMake(self.view.frame.size.width * 4, self.view.frame.size.height);
//设置分页
scrollV.pagingEnabled=YES;
//隐藏水平滚动条
scrollV.showsHorizontalScrollIndicator=NO;
//取消弹簧效果
scrollV.bounces=NO;
//设置滚动视图的代理
scrollV.delegate=self;
//初始化图片框
for (int i = 0; i<4; i++)
{
//创建了四个图片框
UIImageView * imgV = [[UIImageView alloc]initWithFrame:CGRectMake(i * self.view.frame.size.width, 0, self.view.frame.size.width, self.view.frame.size.height)];
//设置图片
imgV.image=[UIImage imageNamed:imgArr[i]];
//设置图片与用户交互
imgV.userInteractionEnabled=YES;
if (i==3) {
//初始化按钮
UIButton * btn = [[UIButton alloc]initWithFrame:CGRectMake((self.view.frame.size.width-100)/2, 600, 100, 44)];
//添加文字
[btn setTitle:@"立即体验" forState:UIControlStateNormal];
//设置边框
btn.layer.borderWidth = 1;
//设置边框颜色
btn.layer.borderColor = [UIColor cyanColor].CGColor;
//设置文字颜色
[btn setTitleColor:[UIColor cyanColor] forState:UIControlStateNormal];
//添加点击事件
[btn addTarget:self action:@selector(shijian) forControlEvents:UIControlEventTouchUpInside];
//将按钮添加到图片
[imgV addSubview:btn];
}
[scrollV addSubview:imgV];
}
//设置分页控制点
page = [[UIPageControl alloc]initWithFrame:CGRectMake((self.view.frame.size.width-100)/2, 640, 100, 30)];
//分页点的个数
page.numberOfPages=4;
//设置页码的颜色
page.pageIndicatorTintColor=[UIColor blackColor];
//选中点的颜色
page.currentPageIndicatorTintColor=[UIColor redColor];
//添加到主视图
[self.view addSubview:scrollV];
[self.view addSubview:page];
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
//偏移量
page.currentPage = scrollV.contentOffset.x/self.view.frame.size.width;
}
-(void)change
{
k = scrollV.contentOffset.x/self.view.frame.size.width;
//设置当前 点的 位置
page.currentPage=k;
//每隔三秒 + 1
k++;
// set设置偏移量
scrollV.contentOffset = CGPointMake(k * self.view.frame.size.width, 0);
if (k>=3) {
[timer invalidate];
}
}