自定义 TabBar

最新推荐文章于 2023-01-31 23:49:44 发布

procedure_1988

最新推荐文章于 2023-01-31 23:49:44 发布

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本文链接：https://blog.youkuaiyun.com/procedure_1988/article/details/52120803

import “XMGTabBar.h”

@interface XMGTabBar()
/* 发布按钮 /
@property (nonatomic, weak) UIButton *publishButton;
@end

@implementation XMGTabBar

(instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
// 设置tabbar的背景图片
[self setBackgroundImage:[UIImage imageNamed:@”tabbar-light”]];

// 添加发布按钮
UIButton *publishButton = [UIButton buttonWithType:UIButtonTypeCustom];
[publishButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_icon"] forState:UIControlStateNormal];
[publishButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_click_icon"] forState:UIControlStateHighlighted];
publishButton.size = publishButton.currentBackgroundImage.size;
[self addSubview:publishButton];
self.publishButton = publishButton;

}
return self;
}

(void)layoutSubviews
{
[super layoutSubviews];

CGFloat width = self.width;
CGFloat height = self.height;

// 设置发布按钮的frame
self.publishButton.center = CGPointMake(width * 0.5, height * 0.5);

// 设置其他UITabBarButton的frame
CGFloat buttonY = 0;
CGFloat buttonW = width / 5;
CGFloat buttonH = height;
NSInteger index = 0;
for (UIView *button in self.subviews) {
if (![button isKindOfClass:[UIControl class]] || button == self.publishButton) continue;
```
// 计算按钮的x值
CGFloat buttonX = buttonW * ((index > 1)?(index + 1):index);
button.frame = CGRectMake(buttonX, buttonY, buttonW, buttonH);

// 增加索引
index++;
```
}
}