CYLTabBarController 第五篇（Tabbar底部栏）

以下笔记内容仅供个人参考，如有理解错误，请高抬贵手，仙人指路，互相学习进步...

使用方法教程

使用方法及教程，查看项目源码github地址：https://github.com/ChenYilong/CYLTabBarController，非常感谢开源的作者，开源促进社区的发展，共建和谐社会！

框架全部文件结构

1.CYLTabBarController
2. CYLTabBar
3.CYLPlusButton
4.UIViewController+CYLTabBarControllerExtention
5.UIView+CYLTabBarControllerExtention
6.UITabBarItem+CYLTabBarControllerExtention
7.UIControl+CYLTabBarControllerExtention
8.CYLConstants
8.总结

解读UIView+CYLTabBarControllerExtention类文件,在源码中中文注释自己的理解

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UIViewController+CYLTabBarControllerExtention类文件（.h,.m）

解读UIViewController+CYLTabBarControllerExtention.h,

UIViewController+CYLTabBarControllerExtention.m

可能需要理解的知识点：
.Block代码块 【 http://www.jianshu.com/p/14efa33b3562】
.类别Category扩展 【http://www.jianshu.com/p/b49e02eb7eb3】
.runtime机制 【 https://github.com/Tuccuay/RuntimeSummary】
.KVC设计模式 【 http://www.jianshu.com/p/45cbd324ea65】
.KVO设计模式 【 http://www.jianshu.com/p/e59bb8f59302】
.异常处理机制 【http://www.jianshu.com/p/f28b9b3f8e44】

UIView+CYLTabBarControllerExtention文件

#import 
#import 

@interface UIView (CYLTabBarControllerExtention)

//给UIView视图添加了一个分类，通过这个分类进行判断该视图是否是凸起按钮，或者是否是tabbarItem 按钮，或者以及相关的控件类型
- (BOOL)cyl_isPlusButton;
- (BOOL)cyl_isTabButton;
- (BOOL)cyl_isTabImageView;
- (BOOL)cyl_isTabLabel;
- (BOOL)cyl_isTabBadgeView;

//设置badge视图View的颜色以及圆角
+ (UIView *)cyl_tabBadgePointViewWithClolor:(UIColor *)color radius:(CGFloat)radius;

@end

#import 
#import "UIView+CYLTabBarControllerExtention.h"
#import "CYLPlusButton.h"

@implementation UIView (CYLTabBarControllerExtention)

- (BOOL)cyl_isPlusButton {
    return [self isKindOfClass:[CYLExternPlusButton class]];
}

- (BOOL)cyl_isTabButton {
    BOOL isKindOfButton = [self cyl_isKindOfClass:[UIControl class]];
    return isKindOfButton;
}

- (BOOL)cyl_isTabImageView {
    BOOL isKindOfImageView = [self cyl_isKindOfClass:[UIImageView class]];
    if (!isKindOfImageView) {
        return NO;
    }
    NSString *subString = [NSString stringWithFormat:@"%@cat%@ew", @"Indi" , @"orVi"];
    BOOL isBackgroundImage = [self cyl_classStringHasSuffix:subString];
    BOOL isTabImageView = !isBackgroundImage;
    return isTabImageView;
}

- (BOOL)cyl_isTabLabel {
    BOOL isKindOfLabel = [self cyl_isKindOfClass:[UILabel class]];
    return isKindOfLabel;
}

- (BOOL)cyl_isTabBadgeView {
    BOOL isKindOfClass = [self isKindOfClass:[UIView class]];
    BOOL isClass = [self isMemberOfClass:[UIView class]];
    BOOL isKind = isKindOfClass && !isClass;
    if (!isKind) {
        return NO;
    }
    NSString *tabBarClassString = [NSString stringWithFormat:@"%@IB%@", @"_U" , @"adg"];
    BOOL isTabBadgeView = [self cyl_classStringHasPrefix:tabBarClassString];;
    return isTabBadgeView;
}

- (BOOL)cyl_isKindOfClass:(Class)class {
    BOOL isKindOfClass = [self isKindOfClass:class];
    BOOL isClass = [self isMemberOfClass:class];
    BOOL isKind = isKindOfClass && !isClass;
    if (!isKind) {
        return NO;
    }
    BOOL isTabBarClass = [self cyl_isTabBarClass];
    return isTabBarClass;
}

- (BOOL)cyl_isTabBarClass {
    NSString *tabBarClassString = [NSString stringWithFormat:@"U%@a%@ar", @"IT" , @"bB"];
    BOOL isTabBarClass = [self cyl_classStringHasPrefix:tabBarClassString];
    return isTabBarClass;
}

- (BOOL)cyl_classStringHasPrefix:(NSString *)prefix {
    NSString *classString = NSStringFromClass([self class]);
    return [classString hasPrefix:prefix];
}

- (BOOL)cyl_classStringHasSuffix:(NSString *)suffix {
    NSString *classString = NSStringFromClass([self class]);
    return [classString hasSuffix:suffix];
}

+ (UIView *)cyl_tabBadgePointViewWithClolor:(UIColor *)color radius:(CGFloat)radius {
    UIView *defaultTabBadgePointView = [[UIView alloc] init];
    [defaultTabBadgePointView setTranslatesAutoresizingMaskIntoConstraints:NO];
    defaultTabBadgePointView.backgroundColor = color;
    defaultTabBadgePointView.layer.cornerRadius = radius;
    defaultTabBadgePointView.layer.masksToBounds = YES;
    defaultTabBadgePointView.hidden = YES;
    // Width constraint
    [defaultTabBadgePointView addConstraint:[NSLayoutConstraint constraintWithItem:defaultTabBadgePointView
                                                                         attribute:NSLayoutAttributeWidth
                                                                         relatedBy:NSLayoutRelationEqual
                                                                            toItem:nil
                                                                         attribute: NSLayoutAttributeNotAnAttribute
                                                                        multiplier:1
                                                                          constant:radius * 2]];
    // Height constraint
    [defaultTabBadgePointView addConstraint:[NSLayoutConstraint constraintWithItem:defaultTabBadgePointView
                                                                         attribute:NSLayoutAttributeHeight
                                                                         relatedBy:NSLayoutRelationEqual
                                                                            toItem:nil
                                                                         attribute: NSLayoutAttributeNotAnAttribute
                                                                        multiplier:1
                                                                          constant:radius * 2]];
    return defaultTabBadgePointView;
}

@end

** CYLTabBarControllerExtention总结：**

1、自定义了一个CYLTabBarControllerExtention的View分类，主要用来判断视图View是否是与tabbar相关的
2、提供入口设置badge的视图的颜色以及圆角修改