#import "ViewController.h"
#import "IntroduceView.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// self.view.backgroundColor = [UIColor redColor];
// 添加引导页
NSArray *array = @[@"0",@"1",@"2"];
CGRect frame = self.view.frame;
IntroduceView *introduceView = [[IntroduceView alloc] initWithImageNameOfArray:array frame:frame];
self.view.backgroundColor = [UIColor yellowColor];
[self.view addSubview:introduceView];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"我是可以点得 你冤枉我了");
}
@end
#import <UIKit/UIKit.h>
@interface IntroduceView : UIView
- (instancetype)initWithImageNameOfArray:(NSArray *)array frame:(CGRect )frame;
@end
#define VIEW_W self.frame.size.width
#import "IntroduceView.h"
@interface IntroduceView ()<UIScrollViewDelegate>
{
NSArray *_arrayOfImageName;
UIScrollView *_scrollView;
UIPageControl *_pageControl;
}
@end
@implementation IntroduceView
- (instancetype)initWithImageNameOfArray:(NSArray *)array frame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
// 0.设置大小
self.frame = frame;
// 1. 获取图片信息
_arrayOfImageName = array;
// 2. 添加显示图片的scrollview
[self addScrollView];
// 3. 添加分页控制器
[self addPageControl];
// 4. 添加进入app按钮
[self addEnterButton];
}
return self;
}
- (void)addEnterButton
{
CGFloat btnX = (_arrayOfImageName.count - 1) * _scrollView.frame.size.width;
CGFloat btnW = _scrollView.frame.size.width;
CGFloat btnH = 60;
CGFloat btnY = _scrollView.frame.size.height - 120;
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(btnX, btnY, btnW, btnH)];
[btn setTitle:@"WELCOME TO APP" forState:UIControlStateNormal];
[btn setTitleColor:[UIColor yellowColor] forState:UIControlStateNormal];
btn.titleLabel.font = [UIFont systemFontOfSize:30];
[btn addTarget:self action:@selector(clickButton) forControlEvents:UIControlEventTouchUpInside];
[_scrollView addSubview:btn];
}
- (void)clickButton
{
[UIView animateWithDuration:2.0 animations:^{
self.alpha = 0;
self.transform = CGAffineTransformScale(self.transform, 0.2, 0.2);
} completion:^(BOOL finished) {
[self removeFromSuperview];
}];
}
- (void)addPageControl
{
CGFloat pageControlX = 0;
CGFloat pageControlW = VIEW_W;
CGFloat pageControlH = 60;
CGFloat pageControlY = self.frame.size.height - pageControlH;
_pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(pageControlX, pageControlY, pageControlW, pageControlH)];
_pageControl.numberOfPages = _arrayOfImageName.count;
_pageControl.userInteractionEnabled = NO;
[self addSubview:_pageControl];
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGFloat offSetX = scrollView.contentOffset.x;
NSInteger pageNum = offSetX / _scrollView.frame.size.width;
_pageControl.currentPage = pageNum;
}
- (void)addScrollView
{
// 1. 获取一个滚动视图
_scrollView = [[UIScrollView alloc] initWithFrame:self.frame];
_scrollView.contentSize = CGSizeMake(VIEW_W * _arrayOfImageName.count, 0);
_scrollView.pagingEnabled = YES;
_scrollView.showsHorizontalScrollIndicator = NO;
_scrollView.bounces = NO;
_scrollView.delegate = self;
// 2. 添加展示图片
for (int i = 0; i < _arrayOfImageName.count; i ++) {
UIImage *image = [UIImage imageNamed:_arrayOfImageName[i]];
CGFloat imageViewX = VIEW_W * i;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(imageViewX, 0, VIEW_W, self.frame.size.height)];
imageView.image = image;
[_scrollView addSubview:imageView];
}
// 3. 把滚动视图添加到View
[self addSubview:_scrollView];
}
@end
