IOS炫酷的引导界面

冷不防 2022-05-30 01:39 267阅读 0赞

> 代码地址如下：  
> [http://www.demodashi.com/demo/11246.html][http_www.demodashi.com_demo_11246.html]

### 一、准备工作 ###

> 1.先用时ps工具制作好图片  
> 2.然后计算好每张图片通过滑动视图的偏移量来改变图片的位置  
> 3.理顺该demo将需要的一些逻辑顺序

### 二、程序实现 ###

项目中不需要配置任何东西，全都是逻辑方面的东西，只要思维逻辑清楚，我们就开始干  
![AlotatNG9BTOHdmOyxt.png][]  
由上面可以知道，其实该demo的代码不是很大。

> 1、所有的图片的初始位置进行定义

-(void)createUI
    {
        //1
        pageoneImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 40, ScreenWidth, 30)];
        pageoneImage1.image = [UIImage imageNamed:@"1_01"];
        [imageView1 addSubview:pageoneImage1];
    
        pageoneImage2 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 100, ScreenWidth, ScreenWidth)];
        pageoneImage2.image = [UIImage imageNamed:@"1_02"];
        [imageView1 addSubview:pageoneImage2];
    
        pageoneImage3 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 120, ScreenWidth, ScreenWidth/4)];
        pageoneImage3.image = [UIImage imageNamed:@"1_03"];
        [imageView1 addSubview:pageoneImage3];
    
        pageoneImage4 = [[UIImageView alloc]initWithFrame:CGRectMake(ScreenWidth/6, CGRectGetMaxY(pageoneImage2.frame)+10, ScreenWidth*2/3, 50)];
        pageoneImage4.image = [UIImage imageNamed:@"1_04"];
        [imageView1 addSubview:pageoneImage4];
    
        pageoneImage5 = [[UIImageView alloc]initWithFrame:CGRectMake(40, CGRectGetMaxY(pageoneImage4.frame)+10, ScreenWidth-80, 40)];
        pageoneImage5.image = [UIImage imageNamed:@"1_05"];
        [imageView1 addSubview:pageoneImage5];
    
        //2
        pageoneImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 40, ScreenWidth, 30)];
        pageoneImage1.image = [UIImage imageNamed:@"1_01"];
        [imageView2 addSubview:pageoneImage1];
    
        pagetwoImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(-ScreenWidth/2, 100-ScreenWidth/2, ScreenWidth*2, ScreenWidth*2)];
        pagetwoImage1.image = [UIImage imageNamed:@"2_01"];
        [imageView2 addSubview:pagetwoImage1];
    
        pagetwoImage2 = [[UIImageView alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(pagetwoImage1.frame)+10, ScreenWidth, 60)];
        pagetwoImage2.image = [UIImage imageNamed:@"2_02"];
        [imageView2 addSubview:pagetwoImage2];
    
        pagetwoImage3 = [[UIImageView alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(pagetwoImage2.frame)+10, ScreenWidth, 30)];
        pagetwoImage3.image = [UIImage imageNamed:@"2_03"];
        [imageView2 addSubview:pagetwoImage3];
    
        //3
        pageoneImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 40, ScreenWidth, 30)];
        pageoneImage1.image = [UIImage imageNamed:@"1_01"];
        [imageView3 addSubview:pageoneImage1];
    
        pagethreeImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 100, ScreenWidth, ScreenWidth*31/36)];
        pagethreeImage1.image = [UIImage imageNamed:@"3_01"];
        [imageView3 addSubview:pagethreeImage1];
    
        pagethreeImage2 = [[UIImageView alloc]initWithFrame:CGRectMake(ScreenWidth, 100, ScreenWidth, ScreenWidth*31/36)];
        pagethreeImage2.image = [UIImage imageNamed:@"3_02"];
        [imageView3 addSubview:pagethreeImage2];
    
        pagethreeImage3 = [[UIImageView alloc]initWithFrame:CGRectMake(ScreenWidth/2, 100, ScreenWidth, ScreenWidth*31/36)];
        pagethreeImage3.image = [UIImage imageNamed:@"3_03"];
        [imageView3 addSubview:pagethreeImage3];
    
        pagethreeImage4 = [[UIImageView alloc]initWithFrame:CGRectMake(10, ScreenHeight, ScreenWidth-20, 60)];
        pagethreeImage4.image = [UIImage imageNamed:@"3_04"];
        pagethreeImage4.alpha = 0;
        [imageView3 addSubview:pagethreeImage4];
    
        pagethreeImage5 = [[UIImageView alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(pagethreeImage4.frame)+15, ScreenWidth, 40)];
        pagethreeImage5.image = [UIImage imageNamed:@"3_05"];
        pagethreeImage5.alpha = 0;
        [imageView3 addSubview:pagethreeImage5];
    
        //5
        pagefiveImage1 = [[UIImageView alloc]initWithFrame:CGRectMake(15, 50-300, ScreenWidth-30, 70)];
        pagefiveImage1.image = [UIImage imageNamed:@"5_01"];
        [imageView5 addSubview:pagefiveImage1];
    
        pagefiveImage2 = [[UIImageView alloc]initWithFrame:CGRectMake(55, CGRectGetMaxY(pagefiveImage1.frame)+10-300, ScreenWidth-110, 10)];
        pagefiveImage2.image = [UIImage imageNamed:@"5_02"];
        pagefiveImage2.alpha = 0;
        [imageView5 addSubview:pagefiveImage2];
    
        pagefiveImage3 = [[UIImageView alloc]initWithFrame:CGRectMake(ScreenWidth/4, ScreenHeight-ScreenWidth/2-60+300, ScreenWidth/2, ScreenWidth/4)];
        pagefiveImage3.image = [UIImage imageNamed:@"5_03"];
        pagefiveImage3.alpha = 0;
        [imageView5 addSubview:pagefiveImage3];
    
        pagefiveImage4 = [[UIImageView alloc]initWithFrame:CGRectMake(-ScreenWidth/2, ScreenHeight-ScreenWidth*5/4, ScreenWidth*4, ScreenWidth*4)];
        pagefiveImage4.image = [UIImage imageNamed:@"5_05"];
        pagefiveImage4.alpha = 0;
        [self rotate360DegreeWithImageView:pagefiveImage4];
        [imageView5 addSubview:pagefiveImage4];
    
        imgView = [[UIImageView alloc]initWithFrame:CGRectMake(50, ScreenHeight-ScreenWidth*4/5, 30-30, 30-30)];
        [self tomAnimationWithName:@"run" count:9];
        imgView.alpha = 0;
        [imageView5 addSubview:imgView];
    }

> 2、初始化scrollView

- (void)setupScrollView
    {
        // 添加scrollView
        UIScrollView *scrollView = [[UIScrollView alloc] init];
        scrollView.frame = self.view.bounds;
        CGFloat contentW = scrollView.bounds.size.width * XXNewfeatureImageCount;
        [self.view addSubview:scrollView];
    
        scrollView.contentSize = CGSizeMake(contentW, 0);
        scrollView.pagingEnabled = YES;
        scrollView.bounces = NO;
        scrollView.showsHorizontalScrollIndicator = NO;
        scrollView.delegate = self;
    
        // 添加图片
        CGFloat imageW = scrollView.bounds.size.width;
        CGFloat imageH = scrollView.bounds.size.height;
    
        imageView1 = [[UIImageView alloc] init];
        imageView1.frame = CGRectMake(0 * imageW, 0, imageW, imageH);
        [scrollView addSubview:imageView1];
    
        imageView2 = [[UIImageView alloc] init];
        imageView2.frame = CGRectMake(1 * imageW, 0, imageW, imageH);
        imageView2.alpha = 0;
        [scrollView addSubview:imageView2];
    
        imageView3 = [[UIImageView alloc] init];
        imageView3.frame = CGRectMake(2 * imageW, 0, imageW, imageH);
        [scrollView addSubview:imageView3];
    
        imageView5 = [[UIImageView alloc] init];
        imageView5.frame = CGRectMake(3 * imageW, 0, imageW, imageH);
        imageView5.userInteractionEnabled = YES;
        imageView5.alpha = 0;
        [scrollView addSubview:imageView5];
    
        // 添加跳转按钮
        UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
        button.frame = CGRectMake(0, 0, 150, 30);
        [button setTitle:@"进入APP" forState:UIControlStateNormal];
        button.layer.borderWidth = 1.0;
        button.layer.borderColor = [UIColor colorWithWhite:0.915 alpha:1.000].CGColor;
        button.titleLabel.font = [UIFont systemFontOfSize:14.0];
        [button addTarget:self action:@selector(getstart) forControlEvents:UIControlEventTouchUpInside];
        CGFloat centerX = imageView5.bounds.size.width * 0.5;
        CGFloat centerY = imageView5.bounds.size.height - 88;
        button.center = CGPointMake(centerX, centerY);
        [imageView5 addSubview:button];
    }

> UIScrollViewDelegate method

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
    {
        offsetX = scrollView.contentOffset.x;
        NSLog(@"%f",offsetX);
        int page = offsetX / scrollView.bounds.size.width + 0.5;
    
    #pragma mark --- 此处写动画
        if (offsetX <= ScreenWidth/2) {
            [self firstPage];
        }
        else if (offsetX > ScreenWidth/2 && offsetX <= ScreenWidth+ScreenWidth/2) {
            [self secondPage];
        }
        else if (offsetX > ScreenWidth+ScreenWidth/2 && offsetX <= ScreenWidth*2+ScreenWidth/2) {
            [self thirdPage];
        }
        else if (offsetX > ScreenWidth*2+ScreenWidth/2 && offsetX <= ScreenWidth*3+ScreenWidth/2) {
            [self lastPage];
        }
    
        self.pageControl.currentPage = page;
    }

> 3、gif的动画和旋转动画

#pragma mark --- UIImageView显示gif动画
    - (void)tomAnimationWithName:(NSString *)name count:(NSInteger)count
    {
        // 如果正在动画，直接退出
        if ([imgView isAnimating]) return;
        // 动画图片的数组
        NSMutableArray *arrayM = [NSMutableArray array];
        // 添加动画播放的图片
        for (int i = 0; i < count; i++) {
            // 图像名称
            NSString *imageName = [NSString stringWithFormat:@"%@%d.png", name, i+1];
            // ContentsOfFile需要全路径
            NSString *path = [[NSBundle mainBundle] pathForResource:imageName ofType:nil];
            UIImage *image = [UIImage imageWithContentsOfFile:path];
            [arrayM addObject:image];
        }
        // 设置动画数组
        imgView.animationImages = arrayM;
        // 重复1次
        imgView.animationRepeatCount = 0;
        // 动画时长
        imgView.animationDuration = imgView.animationImages.count * 0.05;
        // 开始动画
        [imgView startAnimating];
    }
    
    #pragma mark --- 旋转动画
    - (void)rotate360DegreeWithImageView:(UIImageView *)imageView
    {
        CABasicAnimation *animation = [ CABasicAnimation
                                       animationWithKeyPath: @"transform" ];
        animation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];
        //围绕Z轴旋转，垂直与屏幕
        animation.toValue = [ NSValue valueWithCATransform3D:
                             CATransform3DMakeRotation(M_PI, 0.0, 0.0, 1.0) ];
        animation.duration = 5;
        //旋转效果累计，先转180度，接着再旋转180度，从而实现360旋转
        animation.cumulative = YES;
        animation.repeatCount = MAXFLOAT;
        //在图片边缘添加一个像素的透明区域，去图片锯齿
        CGRect imageRrect = CGRectMake(0, 0,imageView.frame.size.width, imageView.frame.size.height);
        UIGraphicsBeginImageContext(imageRrect.size);
        [imageView.image drawInRect:CGRectMake(1,1,imageView.frame.size.width-2,imageView.frame.size.height-2)];
        imageView.image = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
    
        [imageView.layer addAnimation:animation forKey:nil];
    }

### 三、运行效果 ###

运行效果图如下图：  
![ed.gif][]

IOS炫酷的引导界面

> 代码地址如下：  
> [http://www.demodashi.com/demo/11246.html][http_www.demodashi.com_demo_11246.html]
> 
> 注：本文著作权归作者，由demo大师发表，拒绝转载，转载需要作者授权

[http_www.demodashi.com_demo_11246.html]: http://www.demodashi.com/demo/11246.html
[AlotatNG9BTOHdmOyxt.png]: /images/20220530/d109677d87244930a02dcbe7b608974c.png
[ed.gif]: /images/20220530/9efc1bf769ed4c108816b6b6011bd936.png