iOS引导页-初

学习iOS，今天试着做一个简单的引导页，由于的是新手，写的不好，不要见怪

首先创建一个引导页文件，这里我命名为GuideView

GuideView.h文件

#import <UIKit/UIKit.h>

//自定义代理，实现按钮方法
@protocol GuideDelegate <NSObject>

-(void)enter;

@end

@interface GuideView : UIScrollView<UIScrollViewDelegate>

@property (nonatomic,weak) id<GuideDelegate>guidedelegate;

@end

GuideView.m文件

#import "GuideView.h"

#define PAGE_COUNT 2
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define SCREEN_HIEGHT ([UIScreen mainScreen].bounds.size.height)

@interface GuideView(){
    UIPageControl *page;
}

@end

@implementation GuideView

-(id)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    
    if (self) {
        self.bounces = NO;
        self.contentSize = CGSizeMake(SCREEN_WIDTH*PAGE_COUNT, SCREEN_HIEGHT);
        self.backgroundColor = [UIColor whiteColor];
        self.showsHorizontalScrollIndicator = NO;
        self.pagingEnabled = YES;
        self.delegate = self;
        self.backgroundColor = [UIColor clearColor];
        
        for (int i = 0; i < PAGE_COUNT; i++) {
            UIImageView *view = [[UIImageView alloc] initWithFrame:CGRectMake(SCREEN_WIDTH * i, 0, SCREEN_WIDTH, SCREEN_HIEGHT)];
            [view setBackgroundColor:[UIColor whiteColor]];
            [view setImage:[UIImage imageNamed:[NSString stringWithFormat:@"guide%d",i+1]]];
            [self addSubview:view];

            if (i == 1) {
                UIButton *enter = [UIButton buttonWithType:UIButtonTypeSystem];
                enter.frame = CGRectMake(SCREEN_WIDTH / 2 - 50, SCREEN_HIEGHT-100, 100, 50);
                [enter setTitle:@"Enter" forState:UIControlStateNormal];
                [enter addTarget:self action:@selector(enterBtn) forControlEvents:UIControlEventTouchUpInside];
                view.userInteractionEnabled = YES;
                [view addSubview:enter];
                
            }
        }
    }
    
    return self;
}
//这个没有用，晓得问题的麻烦告诉一下
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{

    if (scrollView.contentOffset.x > SCREEN_WIDTH * 2 + 20) {
        [UIView animateWithDuration:0.3 animations:^{
            self.alpha = 0.0;
        } completion:^(BOOL finished) {
            [self removeFromSuperview];
        }];
    }
}

-(void)enterBtn{
    [self.guidedelegate enter];
}

@end

使用引导页

#import "GuidePageView.h"
#import "GuideView.h"

#pragma mark 获取屏幕尺寸
#define SCREEN_FRAME ([UIScreen mainScreen].bounds)
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define SCREEN_HRIGHT ([UIScreen mainScreen].bounds.size.height)

@interface GuidePageView()<GuideDelegate>

@end

@implementation GuidePageView

-(void)viewDidLoad{
    [super viewDidLoad];
    GuideView *g = [[GuideView alloc] initWithFrame:SCREEN_FRAME];
    g.guidedelegate = self;
    [self.view addSubview:g];
}

-(void)didReceiveMemoryWarning{
    [super didReceiveMemoryWarning];
}

-(void)enter{
    [self dismissViewControllerAnimated:YES completion:nil];
}

@end

效果



后续会继续完善