版本v1.29.0 修复分割线和Lottie动画播放异常等bugs

[ChenYilong]

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今天把 CYLTabBarController 更新到1.29.0, 修了几个issue, 主要是顶部导航栏, 主要修复的功能:

• TabBar 自定义分割线

• 隐藏 TabBar 分割线的方法

  将更新的代码贴一下:

TabBar 自定义分割线

// NO.1，using Image note:recommended.推荐方式
    // set the bar shadow image
    // without shadow : use -[[CYLTabBarController hideTabBarShadowImageView] in CYLMainRootViewController.m
    if (@available(iOS 13.0, *)) {
        UITabBarItemAppearance *inlineLayoutAppearance = [[UITabBarItemAppearance  alloc] init];
        // set the text Attributes
        // 设置文字属性
        [inlineLayoutAppearance.normal setTitleTextAttributes:normalAttrs];
        [inlineLayoutAppearance.selected setTitleTextAttributes:selectedAttrs];

        UITabBarAppearance *standardAppearance = [[UITabBarAppearance alloc] init];
        standardAppearance.stackedLayoutAppearance = inlineLayoutAppearance;
        standardAppearance.backgroundColor = [UIColor cyl_systemBackgroundColor];
        standardAppearance.shadowImage = [[self class] imageWithColor:[UIColor cyl_systemGreenColor] size:CGSizeMake([UIScreen mainScreen].bounds.size.width, 1)];
        self.tabBar.standardAppearance = standardAppearance;
    } else {
        // Override point for customization after application launch.
        // set the text Attributes
        // 设置文字属性
        UITabBarItem *tabBar = [UITabBarItem appearance];
        [tabBar setTitleTextAttributes:normalAttrs forState:UIControlStateNormal];
        [tabBar setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];

//        // This shadow image attribute is ignored if the tab bar does not also have a custom background image.So at least set somthing.
        [[UITabBar appearance] setBackgroundImage:[[UIImage alloc] init]];
        [[UITabBar appearance] setShadowImage:[[self class] imageWithColor:[UIColor cyl_systemGreenColor] size:CGSizeMake([UIScreen mainScreen].bounds.size.width, 1)]];
    }

可以使用:

v1.29.0 更新了内部实现, 兼容了 iOS13+ ,和 iOS13- 版本.

-[[CYLTabBarController hideTabBarShadowImageView] 

其中重要的部分在于找到分割线对应的 View, 实现方法如下:

- (UIImageView *)cyl_tabShadowImageView {
    if (@available(iOS 10.0, *)) {
        //iOS10及以上这样获取ShadowImageView：
        UIView *subview = [self cyl_tabBackgroundView];
        if (!subview) {
            return nil;
        }
        NSArray<__kindof UIView *> *backgroundSubviews = subview.subviews;
        //iOS13系统backgroundSubviews.count > 1可行，12及以下就不可行了
        if (backgroundSubviews.count >= 1) {
            for (UIView *subview in backgroundSubviews) {
                if (CGRectGetHeight(subview.bounds) <= 1.0 ) {
                    return (UIImageView *)subview;
                }
            }
        }
    } else {
        //iOS9这样获取ShadowImageView：
        for (UIView *subview in self.subviews) {
            if (CGRectGetHeight(subview.bounds) <= 1.0 ) {
                return (UIImageView *)subview;
            }
        }
    }
    return nil;
}

隐藏 TabBar 分割线的方法

Lottie 动画在某些场景不播放的问题

详情参见 #423 issue.

fix issues:

431

436

492

423

项目地址: https://github.com/ChenYilong/CYLTabBarController

[ChenYilong]

注意

UITabBarAppearance *standardAppearance = [[UITabBarAppearance alloc] init];
//shadowColor和shadowImage均可以自定义颜色, shadowColor默认高度为1, shadowImage可以自定义高度.
standardAppearance.shadowColor = [UIColor cyl_systemGreenColor];
// standardAppearance.shadowImage = [[self class] imageWithColor:[UIColor cyl_systemGreenColor] size:CGSizeMake([UIScreen mainScreen].bounds.size.width, 1)];

[Lee0820]

你好，我这么设置了确实达到了设置分割线的效果，但是 CYLTabBarItemTitlePositionAdjustment设置的偏移量就失效了，是时机问题不对吗？请问下作者，这个问题修复了吗？

[ChenYilong]

@Lee0820 偏移量相关的代码我没动，是不是不设置分割线就生效了？

[Lee0820]

对的，用UITabBarAppearance 设置 ShadowImage,后 CYLTabBarItemTitlePositionAdjustment设置的偏移量就失效了，我在微信也请教过这个问题，不知道是不是系统的bug，13.4.1，我用老api设置分割线也是有效的 [[UITabBar appearance] setShadowImage:，13.3上不行～

[ChenYilong]

@Lee0820 Lee 在这里回复你了 https://github.com/ChenYilong/CYLTabBarController/issues/456

[humoroutlaw]

iOS 13.2.3 顶部横线无法显示,图层也看不到shadowImage.

- (void)customizeTabBarAppearance {
      [self rootWindow].backgroundColor = [UIColor cyl_systemBackgroundColor];

    NSMutableDictionary *normalAttrs = [NSMutableDictionary dictionary];
    normalAttrs[NSForegroundColorAttributeName] = [UIColor cyl_systemGrayColor];

    NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];
    selectedAttrs[NSForegroundColorAttributeName] = [UIColor cyl_labelColor];

   if (@available(iOS 13.0, *)) {
           UITabBarItemAppearance *inlineLayoutAppearance = [[UITabBarItemAppearance  alloc] init];
           [inlineLayoutAppearance.normal setTitleTextAttributes:normalAttrs];
           [inlineLayoutAppearance.selected setTitleTextAttributes:selectedAttrs];

           UITabBarAppearance *standardAppearance = [[UITabBarAppearance alloc] init];
           standardAppearance.stackedLayoutAppearance = inlineLayoutAppearance;
           standardAppearance.backgroundColor = [UIColor cyl_systemBackgroundColor];
           standardAppearance.shadowImage = [[self class] imageWithColor:[UIColor cyl_systemGreenColor] size:CGSizeMake([UIScreen mainScreen].bounds.size.width, 1)];
           self.tabBar.standardAppearance = standardAppearance;
       } else {
           UITabBarItem *tabBar = [UITabBarItem appearance];
           [tabBar setTitleTextAttributes:normalAttrs forState:UIControlStateNormal];
           [tabBar setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];
           [[UITabBar appearance] setBackgroundImage:[[UIImage alloc] init]];
           [[UITabBar appearance] setShadowImage:[[self class] imageWithColor:[UIColor cyl_systemGreenColor] size:CGSizeMake([UIScreen mainScreen].bounds.size.width, 1)]];
       }
}

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