KEEP引导页
简介：
一个好的引导页会使得用户体验大大提升，那么视频引导页是一个不错的创新，页面分为视频，logo 轮播字， 以及注册登录两个按钮。
界面预览：
Keep.gif
代码简单介绍：
1.导入框架
MediaPlayer.framework
2.在Main.storyboard中进行视图的创建
3.主要方法实现如下：
-(void)playbackStateChanged{
//取得目前状态
MPMoviePlaybackState playbackState = [_moviePlayer playbackState];
//状态类型
switch (playbackState) {
case MPMoviePlaybackStateStopped:
[_moviePlayer play];
break;
case MPMoviePlaybackStatePlaying:
NSLog(@"播放中");
break;
case MPMoviePlaybackStatePaused:
[_moviePlayer play];
break;
case MPMoviePlaybackStateInterrupted:
NSLog(@"播放被中断");
break;
case MPMoviePlaybackStateSeekingForward:
NSLog(@"往前快转");
break;
case MPMoviePlaybackStateSeekingBackward:
NSLog(@"往后快转");
break;
default:
NSLog(@"无法辨识的状态");
break;
}
}
-(void)updateViewConstraints{
[super updateViewConstraints];
self.viewWidth.constant = CGRectGetWidth([UIScreen mainScreen].bounds) *4 ;
self.secondViewLeading.constant = CGRectGetWidth([UIScreen mainScreen].bounds);
self.thirdViewLeading.constant = CGRectGetWidth([UIScreen mainScreen].bounds) *2;
self.fourViewLeading.constant =CGRectGetWidth([UIScreen mainScreen].bounds) *3;
self.firstLabelWidth.constant = CGRectGetWidth([UIScreen mainScreen].bounds);
self.secondLabelWidth.constant =CGRectGetWidth([UIScreen mainScreen].bounds);
self.thridLabelWidth.constant = CGRectGetWidth([UIScreen mainScreen].bounds);
}
//ios以后隐藏状态栏
-(BOOL)prefersStatusBarHidden{
return YES;
}- (UIStatusBarStyle)preferredStatusBarStyle
{
return UIStatusBarStyleLightContent;
}
-(void)setupTimer{
self.timer = [NSTimer timerWithTimeInterval:3.0f target:self selector:@selector(timerChanged) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop]addTimer:self.timer forMode:NSRunLoopCommonModes];
}
-(void)pageChanged:(UIPageControl *)pageControl{
CGFloat x = (pageControl.currentPage) * [UIScreen mainScreen].bounds.size.width;
[self.scrollView setContentOffset:CGPointMake(x, 0) animated:YES];
}
-(void)timerChanged{
int page = (self.pageControl.currentPage +1) %4;
self.pageControl.currentPage = page;
[self pageChanged:self.pageControl];
}- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
double page = self.scrollView.contentOffset.x / self.scrollView.bounds.size.width;
self.pageControl.currentPage = page;
if (page== - 1)
{
self.pageControl.currentPage = 3;// 序号0 最后1页
}
else if (page == 4)
{
self.pageControl.currentPage = 0; // 最后+1,循环第1页
[self.scrollView setContentOffset:CGPointMake(0, 0) animated:YES];
}
}- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
[self.timer invalidate];
}- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
[self setupTimer];
}
