iOS 13 适配记录

暗黑模式 适配参考suiling的文章 ，

模态弹窗的状态栏透明，是由于modalPresentationStyle默认是auto，设置modalPresentationStyle为需要的值可以解决，

tabbar和navigationbar的线隐藏失效，

CYLTabBarController对tabbar文字的颜色和字体失效，适配：

if (@available(iOS 13.0, *)) {
        UITabBar *tabbar = [UITabBar appearance];
        [tabbar setTintColor:[UIColor redColor]];
        
        // 普通状态下的文字属性
        NSMutableDictionary *normalAttrs = [NSMutableDictionary dictionary];
        normalAttrs[NSFontAttributeName] = kFont(12, UIFontWeightRegular);
        
        // set the text color for selected state
        // 选中状态下的文字属性
        NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];
        selectedAttrs[NSFontAttributeName] = kFont(12, UIFontWeightRegular);
        UITabBarItem *tabBarItem = [UITabBarItem appearance];
        [tabBarItem setTitleTextAttributes:normalAttrs forState:UIControlStateNormal];
        [tabBarItem setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];
    } else {
        // 普通状态下的文字属性
        NSMutableDictionary *normalAttrs = [NSMutableDictionary dictionary];
        normalAttrs[NSFontAttributeName] = kFont(12, UIFontWeightRegular);
        
        // set the text color for selected state
        // 选中状态下的文字属性
        NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];
        selectedAttrs[NSForegroundColorAttributeName] = [UIColor redColor];
        selectedAttrs[NSFontAttributeName] = kFont(12, UIFontWeightRegular);
        
        // set the text Attributes
        // 设置文字属性
        UITabBarItem *tabBarItem = [UITabBarItem appearance];
        [tabBarItem setTitleTextAttributes:normalAttrs forState:UIControlStateNormal];
        [tabBarItem setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];
    }

UITextField的leftView直接设置UIButton、UIImageView等直接渲染图片的控件时，控件大小会自动设置为图片大小，需要在外层添加一层UIView防止自适应