iOS开发之新手引导页

 ](http://upload-images.jianshu.io/upload_images/1399153-d8df5fec7401c540.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

因项目首页是地图，而且我们的app名字是M-help，下载的人进去一脸“懵逼”，并不知道这个app是干嘛的，所以要求做一个“新手指引”，其实这个功能和引导页差不多用UIScrollView的contentSize和contentOffset(偏移量)这两个属性，需要的图让UI出好，我们只管显示就行了！！ok，话不多说，上代码，需要的可以直接拿过去~

代码在appdelegate里面写

// 移除引导页
-(void)removeLun
{
    [scrollView removeFromSuperview];
    newScrollView = [[UIScrollView alloc]initWithFrame:[UIScreen mainScreen].bounds];
    [self.window.rootViewController.view addSubview:newScrollView];
    [self.window.rootViewController.view bringSubviewToFront:newScrollView];
    newScrollView.bounces = NO;
    newScrollView.showsHorizontalScrollIndicator = NO;
    newScrollView.showsVerticalScrollIndicator = NO;
    newScrollView.pagingEnabled = NO;
    NSArray *imageArr = @[@"新手引导－1.jpg",@"新手引导－2.jpg",@"新手引导－3.jpg"];
    // 设置scrollview内容
    for (int i = 0; i < 3; i++) {
        UIImageView *bgImgView = [[UIImageView alloc]initWithFrame:CGRectMake(kScreenWidth * i, 0, kScreenWidth, kScreenHeight)];
        [newScrollView addSubview:bgImgView];
        bgImgView.userInteractionEnabled = YES;
        bgImgView.image = [UIImage imageNamed:imageArr[i]];
        [newScrollView addSubview:bgImgView];
        UIButton *removeBtn1 = [[UIButton alloc] initWithFrame:CGRectMake(100, 100, 150, 100)];
        removeBtn1.backgroundColor = [UIColor clearColor];
        [bgImgView addSubview:removeBtn1];
        removeBtn1.tag = 1230 + i;
        [removeBtn1 mas_makeConstraints:^(MASConstraintMaker *make) {
            make.center.mas_equalTo(bgImgView);
            make.width.mas_equalTo(150);
            make.height.mas_equalTo(80);
        }];
        [removeBtn1 addTarget:self action:@selector(removeNewScroll:) forControlEvents:UIControlEventTouchUpInside];
    }
    newScrollView.contentSize = CGSizeMake(kScreenWidth * 3, kScreenHeight);
    newScrollView.contentOffset = CGPointMake(0, 0);
}
-(void)removeNewScroll:(UIButton *)btn {
    if (btn.tag == 1232) {
        [newScrollView removeFromSuperview];
    }else {
        newScrollView.contentOffset = CGPointMake(kScreenWidth * (btn.tag - 1230 + 1), 0);
    }
    
}```

####最后宣传一下我们的app，名字M-help，是个帮助类的app，不管你有什么困难和问题都可以在我们平台上面发，但是需要一定报酬给解决你困难的人，现在上线的版本是测试版，有很多bug，大神无喷，在努力修复中，后续也有很多新的功能，感兴趣的可以下载一下，谢谢大家！！！