#import "MJViewController.h"
#import "RootViewController.h"
@interface MJViewController () <UIScrollViewDelegate>
@property (strong, nonatomic) UIScrollView *scrollView;
@property (strong, nonatomic) UIPageControl *pageControl;
@property (strong, nonatomic) UIButton *nextBt;
@end
@implementation MJViewController
- (void)viewDidLoad
{
[super viewDidLoad];
//初始化视图
NSArray *array = [NSArray arrayWithObjects:[UIColor redColor],[UIColor blueColor],[UIColor yellowColor],[UIColor purpleColor],[UIColor whiteColor], nil];
self.scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(10, 80, self.view.frame.size.width-20, self.view.frame.size.height-100)];
self.scrollView.backgroundColor = [UIColor groupTableViewBackgroundColor];
self.automaticallyAdjustsScrollViewInsets = NO;//恢复scrollview偏移
self.scrollView.delegate = self;
self.scrollView.pagingEnabled = YES; //分页属性
self.scrollView.showsHorizontalScrollIndicator= NO;
self.scrollView.showsVerticalScrollIndicator = NO;
self.scrollView.contentSize = CGSizeMake((self.view.frame.size.width-20)*[array count], self.scrollView.frame.size.height); //内容范围
[self.view addSubview:self.scrollView];
self.pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(10,self.view.frame.size.height-50, self.view.frame.size.width-20, 20)];
// self.pageControl.backgroundColor = [UIColor grayColor];
self.pageControl.numberOfPages = array.count;
self.pageControl.currentPage = 0;
[self.view addSubview:self.pageControl];
for (int i = 0; i<array.count; i++) {
UIImageView *imageview = [[UIImageView alloc]initWithFrame:CGRectMake(i*self.scrollView.frame.size.width+5, 5, self.scrollView.frame.size.width-10, self.scrollView.frame.size.height-10)];
imageview.backgroundColor = array[i];
[self.scrollView addSubview:imageview];
if (i==array.count-1) {
imageview.userInteractionEnabled = YES;
self.nextBt = [[UIButton alloc]initWithFrame:CGRectMake(0,0,200, 44)];
_nextBt.alpha = 0.5;
_nextBt.backgroundColor = [UIColor darkGrayColor];
[_nextBt setTitle:@"开启致富之旅" forState:UIControlStateNormal];
[_nextBt setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];
[_nextBt addTarget:self action:@selector(gotoAction) forControlEvents:UIControlEventTouchUpInside];
[imageview addSubview:self.nextBt];
}
}
}
-(void)gotoAction{
RootViewController *rootVC = [[RootViewController alloc]init];
[self presentModalViewController:rootVC animated:YES];
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
if ([scrollView isMemberOfClass:[UITableView class]]) {
}else{
//在scrollViewDidScroll内实现监听contentOffset内容偏移量；根据contentOffset计算当前属于哪一页；
int index = fabs(scrollView.contentOffset.x)/scrollView.frame.size.width;//当前是第几个视图
self.pageControl.currentPage = index;
}
}
然后在代理里面记得实现：
#pragma mark - 引导页
- (void)setIntroductionViewController
{
//读取沙盒数据
NSUserDefaults * settings1 = [NSUserDefaults standardUserDefaults];
NSString *key1 = [NSString stringWithFormat:@"is_first"];
NSString *value = [settings1 objectForKey:key1];
if (!value) {//如果没有数据
//***
//引导页
introductionVC = [[DMIntroductionViewController alloc]init];
[UIApplication sharedApplication].delegate.window.rootViewController = introductionVC;
}
}
@end
来源：https://www.cnblogs.com/linxiu-0925/p/5421540.html