您好,登錄后才能下訂單哦!
這篇文章將為大家詳細講解有關iOS基于UIScrollView如何實現滑動引導頁,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
效果圖:
WelcomeViewController.h
#import <UIKit/UIKit.h> @interface WelcomeViewController : UIViewController @end
WelcomeViewController.m
#import "WelcomeViewController.h" #define IMAGECOUNT 3 @interface WelcomeViewController () <UIScrollViewDelegate> @property (nonatomic, strong)UIPageControl *pageControl; @end @implementation WelcomeViewController - (void)viewDidLoad { [super viewDidLoad]; //創建ScrollView UIScrollView *sv = [[UIScrollView alloc] init]; sv.frame = self.view.bounds; //設置邊緣不彈跳 sv.bounces = NO; //整頁滾動 sv.pagingEnabled = YES; sv.showsHorizontalScrollIndicator = NO; //加入多個子視圖(ImageView) for(NSInteger i=0; i<IMAGECOUNT; i++){ NSString *imgName = [NSString stringWithFormat:@"%ld", i+1]; UIImage *image = [UIImage imageNamed:imgName]; UIImageView *imageView = [[UIImageView alloc]initWithImage:image]; CGRect frame = CGRectZero; frame.origin.x = i * sv.frame.size.width; frame.size = sv.frame.size; imageView.frame = frame; [sv addSubview:imageView]; if(i==IMAGECOUNT-1){ //開啟圖片的用戶點擊功能 imageView.userInteractionEnabled = YES; //加個按鈕 UIButton *button = [[UIButton alloc]init]; button.frame = CGRectMake((imageView.frame.size.width-150)/2, imageView.frame.size.height*0.8, 150, 40); button.backgroundColor = [UIColor orangeColor]; [button setTitle:@"立即體驗" forState:UIControlStateNormal]; button.titleLabel.font = [UIFont boldSystemFontOfSize:16]; [imageView addSubview:button]; [button addTarget:self action:@selector(enter) forControlEvents:UIControlEventTouchUpInside]; } } sv.contentSize = CGSizeMake(IMAGECOUNT * sv.frame.size.width, sv.frame.size.height); [self.view addSubview:sv]; //加入頁面指示控件PageControl UIPageControl *pageControl = [[UIPageControl alloc]init]; self.pageControl = pageControl; //設置frame pageControl.frame = CGRectMake(0, self.view.frame.size.height - 40, self.view.frame.size.width, 20); //分頁面的數量 pageControl.numberOfPages = IMAGECOUNT; //設置小圓點渲染顏色 pageControl.pageIndicatorTintColor = [UIColor whiteColor]; //設置當前選中小圓點的渲染顏色 pageControl.currentPageIndicatorTintColor = [UIColor redColor]; //關閉用戶點擊交互 pageControl.userInteractionEnabled = NO; [self.view addSubview:pageControl]; sv.delegate = self; } - (void)enter { NSLog(@"進入應用"); } //UIScrollViewDelegate方法 - (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGPoint offset = scrollView.contentOffset; if(offset.x<=0){ offset.x = 0; scrollView.contentOffset = offset; } NSUInteger index = round(offset.x / scrollView.frame.size.width); self.pageControl.currentPage = index; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
關于“iOS基于UIScrollView如何實現滑動引導頁”這篇文章就分享到這里了,希望以上內容可以對大家有一定的幫助,使各位可以學到更多知識,如果覺得文章不錯,請把它分享出去讓更多的人看到。
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。