快速搭建项目-01 启动页

首先需要创建一个引导页控制器,showViewController,然后在viewdidload中增加如下代码

UIScrollView* bgScrollView = [[UIScrollViewalloc]initWithFrame:self.view.bounds];

for(inti =0; i<_imageArray.count; i++) {

UIImage*image = [UIImageimageNamed:_imageArray[i]];

UIImageView*imageView = [[UIImageViewalloc]initWithFrame:CGRectMake(self.view.frame.size.width* i,0,self.view.frame.size.width,self.view.frame.size.height)];

if(i==_imageArray.count-1) {

imageView.userInteractionEnabled=YES;

UIButton*button = [UIButtonbuttonWithType:UIButtonTypeSystem];

button.frame=CGRectMake(self.view.frame.size.width/3,self.view.frame.size.height*7/8,self.view.frame.size.width/3,self.view.frame.size.height/16);

[buttonsetTitle:@"点击进入"forState:UIControlStateNormal];

[buttonsetTitleColor:[UIColorwhiteColor]forState:UIControlStateNormal];

button.layer.borderWidth=2;

button.layer.cornerRadius=5;

button.clipsToBounds=YES;

button.layer.borderColor= [UIColorwhiteColor].CGColor;

[buttonaddTarget:selfaction:@selector(go:)forControlEvents:UIControlEventTouchUpInside];

[imageViewaddSubview:button];

}

imageView.image= image;

[bgScrollViewaddSubview:imageView];

}

bgScrollView.bounces=NO;

bgScrollView.pagingEnabled=YES;

bgScrollView.showsHorizontalScrollIndicator=NO;

bgScrollView.contentSize=CGSizeMake(self.view.frame.size.width*3,self.view.frame.size.height);

bgScrollView.delegate=self;

[self.viewaddSubview:bgScrollView];

_pageControl= [[UIPageControlalloc]initWithFrame:CGRectMake(self.view.frame.size.width/3,self.view.frame.size.height*15/16,self.view.frame.size.width/3,self.view.frame.size.height/16)];

//设置页数

_pageControl.numberOfPages=3;

//设置页码的点的颜色

_pageControl.pageIndicatorTintColor= [UIColoryellowColor];

//设置当前页码的点颜色

_pageControl.currentPageIndicatorTintColor= [UIColorredColor];

[self.viewaddSubview:_pageControl];

以上代码创建了一个ScrollView  一个pageControl   scrollView主要用于承载启动页的图片,以及最后一页上的按钮,当然,按钮可以放在任何一页。

下一步是实现uiscrollview的代理方法,让uiscrollview的页数和pageControl的小圆点匹配

-(void)scrollViewDidScroll:(UIScrollView*)scrollView{

//计算当前在第几页

_pageControl.currentPage= (NSInteger)(scrollView.contentOffset.x/ [UIScreenmainScreen].bounds.size.width);

}

最后是点击按钮触发的事件:

ViewController* VC = [[ViewControlleralloc]init];

self.view.window.rootViewController= VC;

让主窗口返回到主页控制器上。

跟引导页相关的一个是启动页,启动页一般是固态图片和广告,目前只写固态图片的

固态图片最主要的就是延长时间的操作,可以在appdelegate中设置延时操作

[NSThreadsleepForTimeInterval:2];

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