之前遇到了很多关于导航栏的问题, 一直想封装一下, 以后就一劳永逸了, 一直没时间, 最近做项目, 实在忍不了了, 就直接封装了方法, 全局调用. 原理很简单, 使用Runtime动态的向类中添加方法,全局调用, 直接上代码吧!
创建一个类, 继承自UIView:
typedef void(^ClickBlock)(void);
@interface HBK_NavigationBar : UIView
/*
标题
*/
@property (nonatomic, strong) UILabel *titleLabel;
/*
最左边按钮
*/
@property (nonatomic, strong) UIButton *leftFirstBtn;
/*
左边第二个按钮
*/
@property (nonatomic, strong) UIButton *leftSecondBtn;
/*
最右边item
*/
@property (nonatomic, strong) UIButton *rightFirstBtn;
/*
右边第二个item
*/
@property (nonatomic, strong) UIButton *rightSecondBtn;
/**
右边第三个item
*/
@property (nonatomic, strong) UIButton *rightThirdBtn;
/*
背景图片
*/
@property (nonatomic, strong) UIImage *backgroundImage;
/*
背景颜色
*/
@property (nonatomic, strong) UIColor *bgColor;
/*
标题
*/
@property (nonatomic, copy) NSString *title;
/*
标题字体大小
*/
@property (nonatomic, strong) UIFont *font;
/*
标题颜色
*/
@property (nonatomic, strong) UIColor *titleColor;
/*
导航栏下面的线
*/
@property (nonatomic, strong) CALayer * deviderLayer;
以上主要定义了一些基本控件， title的展示， 以及左边和右边的item，包括导航栏属性的设置， 背景色， 背景图片等！
下面这些主要就是一些方法了， 下面列举了两个。
**
只有标题的navigationBar
@param title 标题
@return 导航栏
*/
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title;
/**
标题 ---> 返回按钮
@param title 标题
@param back 返回按钮
@return 导航栏
*/
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title
backAction:(ClickBlock)back;
下面是.m的实现方法, 也是列举了部分方法。
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
self.size = CGSizeMake(kScreenWidth, kNavBarHeight);
self.backgroundColor = HexColorInt32_t(F8F8F8);
// 分隔线
CALayer * layer = [CALayer layer];
layer.frame = CGRectMake(0, kNavBarHeight-0.5, kScreenWidth, 0.5);
layer.backgroundColor = HexColorInt32_t(DDDDDD).CGColor;
[self.layer addSublayer:layer];
_deviderLayer = layer;
}
return self;
}
- (instancetype)initWithTitle:(NSString *)title
leftFirst:(NSString *)leftFirst
leftFirstBtnAction:(ClickBlock)leftFirstAction
leftSecond:(NSString *)leftSecond
leftSecondBtnAction:(ClickBlock)leftSecondAction
rightFirst:(NSString *)rightFirst
rightFirstBtnAction:(ClickBlock)rightFirstAction
rightSecond:(NSString *)rightSecond
rightSecondBtnAction:(ClickBlock)rightSecondAction
rightThird:(NSString *)rightThird
rightThirdBtnAction:(ClickBlock)rightThirdAction {
if (self = [super init]) {
self.bgImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, kNavBarHeight-0.5)];
[self addSubview:self.bgImageView];
UIView *bottomView = [[UIView alloc] initWithFrame:CGRectMake(0, self.maxY-44, kScreenWidth, 44)];
[self addSubview:bottomView];
//如果标题存在, 创建label
if (title) {
self.titleLabel = [[UILabel alloc] initWithFrame:(CGRectMake(0, 0, kScreenWidth, 44))];
self.titleLabel.textAlignment = NSTextAlignmentCenter;
self.titleLabel.font = [UIFont systemFontOfSize:18];
self.titleLabel.text = title;
[bottomView addSubview:self.titleLabel];
}
//左边第一个按钮(最左边)
if (leftFirst) {
self.leftFirstBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
self.leftFirstBtn.frame = CGRectMake(10, 7, 30, 30);
UIImage *image = [UIImage imageNamed:leftFirst];
if (image) {
[self.leftFirstBtn setImage:[UIImage imageNamed:leftFirst] forState:(UIControlStateNormal)];
} else {
[self.leftFirstBtn setTitle:leftFirst forState:(UIControlStateNormal)];
self.leftFirstBtn.titleLabel.font = [UIFont systemFontOfSize:15];
[self.leftFirstBtn setTitleColor:[UIColor blackColor] forState:(UIControlStateNormal)];
}
[self.leftFirstBtn addTarget:self action:@selector(leftFirstBtnAction) forControlEvents:(UIControlEventTouchUpInside)];
self.leftFirstBlock = leftFirstAction;
[bottomView addSubview:self.leftFirstBtn];
}
//左边第二个按钮
if (leftSecond) {
self.leftSecondBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
self.leftSecondBtn.frame = CGRectMake(40, 27, 30, 30);
UIImage *image = [UIImage imageNamed:leftSecond];
if (image) {
[self.leftSecondBtn setImage:[UIImage imageNamed:leftSecond] forState:(UIControlStateNormal)];
} else {
[self.leftSecondBtn setTitle:leftSecond forState:(UIControlStateNormal)];
self.leftSecondBtn.titleLabel.font = [UIFont systemFontOfSize:15];
[self.leftSecondBtn setTitleColor:[UIColor blackColor] forState:(UIControlStateNormal)];
}
[self.leftSecondBtn addTarget:self action:@selector(leftSecondBtnAction) forControlEvents:(UIControlEventTouchUpInside)];
self.leftSecondBlock = leftSecondAction;
[bottomView addSubview:self.leftSecondBtn];
}
//右边第一个按钮(最右边)
if (rightFirst) {
self.rightFirstBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
self.rightFirstBtn.frame = CGRectMake(kScreenWidth-35, 7, 30, 30);
UIImage *image = [UIImage imageNamed:rightFirst];
if (image) {
[self.rightFirstBtn setImage:[UIImage imageNamed:rightFirst] forState:(UIControlStateNormal)];
} else {
[self.rightFirstBtn setTitle:rightFirst forState:(UIControlStateNormal)];
self.rightFirstBtn.titleLabel.font = [UIFont systemFontOfSize:15];
[self.rightFirstBtn setTitleColor:[UIColor blackColor] forState:(UIControlStateNormal)];
}
[self.rightFirstBtn addTarget:self action:@selector(rightFirstBtnAction) forControlEvents:(UIControlEventTouchUpInside)];
self.rightFirstBlock = rightFirstAction;
[bottomView addSubview:self.rightFirstBtn];
}
//右边第二个按钮
if (rightSecond) {
self.rightSecondBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
UIImage *image = [UIImage imageNamed:rightSecond];
self.rightSecondBtn.frame = CGRectMake(kScreenWidth-70, 7, 30, 30);
if (image) {
[self.rightSecondBtn setImage:[UIImage imageNamed:rightSecond] forState:(UIControlStateNormal)];
} else {
[self.rightSecondBtn setTitle:rightSecond forState:(UIControlStateNormal)];
self.rightSecondBtn.titleLabel.font = [UIFont systemFontOfSize:15];
[self.rightSecondBtn setTitleColor:[UIColor blackColor] forState:(UIControlStateNormal)];
}
[self.rightSecondBtn addTarget:self action:@selector(rightSecondBtnAction) forControlEvents:(UIControlEventTouchUpInside)];
self.rightSecondBlock = rightSecondAction;
[bottomView addSubview:self.rightSecondBtn];
}
if (rightThird) {
self.rightThirdBtn = [UIButton buttonWithType:(UIButtonTypeCustom)];
self.rightThirdBtn.frame = CGRectMake(kScreenWidth-105, 7, 30, 30);
UIImage *image = [UIImage imageNamed:rightThird];
if (image) {
[self.rightThirdBtn setImage:[UIImage imageNamed:rightThird] forState:(UIControlStateNormal)];
} else {
[self.rightThirdBtn setTitle:rightSecond forState:(UIControlStateNormal)];
self.rightThirdBtn.titleLabel.font = [UIFont systemFontOfSize:15];
[self.rightThirdBtn setTitleColor:[UIColor blackColor] forState:(UIControlStateNormal)];
}
[self.rightThirdBtn addTarget:self action:@selector(rightThirdBtnAction) forControlEvents:(UIControlEventTouchUpInside)];
self.rightThirdBlock = rightThirdAction;
[bottomView addSubview:self.rightThirdBtn];
}
}
return self;
}
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title {
return [[self alloc] initWithTitle:title
leftFirst:nil
leftFirstBtnAction:nil
leftSecond:nil
leftSecondBtnAction:nil
rightFirst:nil
rightFirstBtnAction:nil
rightSecond:nil
rightSecondBtnAction:nil
rightThird:nil
rightThirdBtnAction:nil];
}
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title
backAction:(ClickBlock)back {
return [[self alloc] initWithTitle:title
leftFirst:BackButtonImageName
leftFirstBtnAction:back
leftSecond:nil
leftSecondBtnAction:nil
rightFirst:nil
rightFirstBtnAction:nil
rightSecond:nil
rightSecondBtnAction:nil
rightThird:nil
rightThirdBtnAction:nil];
}
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title
leftFirst:(NSString *)leftFirst
leftFirstAction:(ClickBlock)leftFirstAction {
return [[self alloc] initWithTitle:title
leftFirst:leftFirst
leftFirstBtnAction:leftFirstAction
leftSecond:nil
leftSecondBtnAction:nil
rightFirst:nil
rightFirstBtnAction:nil
rightSecond:nil
rightSecondBtnAction:nil
rightThird:nil
rightThirdBtnAction:nil];
}
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title
leftFirst:(NSString *)leftFirst
leftFirstAction:(ClickBlock)leftFirstAction
leftSecond:(NSString *)leftSecond
leftSecondBtnAction:(ClickBlock)leftSecondAction {
return [[self alloc] initWithTitle:title
leftFirst:leftFirst
leftFirstBtnAction:leftFirstAction
leftSecond:leftSecond
leftSecondBtnAction:leftSecondAction
rightFirst:nil
rightFirstBtnAction:nil
rightSecond:nil
rightSecondBtnAction:nil
rightThird:nil
rightThirdBtnAction:nil];
}
+ (instancetype)HBK_setupNavigationBarWithTitle:(NSString *)title
rightFirst:(NSString *)rightFirst
rightFirstBtnAction:(ClickBlock)rightFirstAction {
return [[self alloc] initWithTitle:title
leftFirst:nil
leftFirstBtnAction:nil
leftSecond:nil
leftSecondBtnAction:nil
rightFirst:rightFirst
rightFirstBtnAction:rightFirstAction
rightSecond:nil
rightSecondBtnAction:nil
rightThird:nil
rightThirdBtnAction:nil];
}
下面这些是重中之重，写完之后就全局调用了。
@class HBK_NavigationBar;
@interface UIViewController (NavigatiionBar)
@property (nonatomic, strong) HBK_NavigationBar * hbk_navgationBar;
@end
实现部分
//-------------------------------- 动态向类中添加方法 -----------------------------
#import "HBK_NavigationBar.h"
static const char NavgationBarkey = '\0';
@implementation UIViewController (NavigatiionBar)
- (void)setHbk_navgationBar:(HBK_NavigationBar *)hbk_navgationBar {
if (self.hbk_navgationBar != hbk_navgationBar) {
[self.hbk_navgationBar removeFromSuperview];
[self.view addSubview:hbk_navgationBar];
/**
@param object#> 表示关联者，是一个对象，变量名理所当然也是object description#>
@param key#> 获取被关联者的索引key description#>
@param value#> 被关联者 description#>
@param policy#> 关联时采用的协议，有assign，retain，copy等协议 description#>
关键策略是一个枚举值。
OBJC_ASSOCIATION_ASSIGN = 0, <指定一个弱引用关联的对象>
OBJC_ASSOCIATION_RETAIN_NONATOMIC = 1,<指定一个强引用关联的对象>
OBJC_ASSOCIATION_COPY_NONATOMIC = 3, <指定相关的对象复制>
OBJC_ASSOCIATION_RETAIN = 01401, <指定强参考>
OBJC_ASSOCIATION_COPY = 01403 <指定相关的对象复制>
*/
objc_setAssociatedObject(self, &NavgationBarkey, hbk_navgationBar, OBJC_ASSOCIATION_ASSIGN);
}
}
- (HBK_NavigationBar *)hbk_navgationBar {
return objc_getAssociatedObject(self, &NavgationBarkey);
}
重要的代码都贴上去了， 主要是Runtime的运用。
github地址查看完整demo。
https://huangbingke@github.com/huangbingke/HBKNavigationBar.git
欢迎提供宝贵意见！
码字不易，求打赏！
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