扩展uitabbar,解决消息提示小红点过大的问题

系统的uitabar小红点显示过大,需要修改其尺寸,我们可以通过扩展uitabBar的方式解决:
代码如下:
.h:

#import <UIKit/UIKit.h>@interface UITabBar (badge)- (void)showBadgeOnItemIndex:(int)index;   //显示小红点- (void)hideBadgeOnItemIndex:(int)index; //隐藏小红点@end

.m:

#import "UITabBar+badge.h"#define TabbarItemNums 4.0    //tabbar的数量 如果是5个设置为5.0@implementation UITabBar (badge)//显示小红点- (void)showBadgeOnItemIndex:(int)index{    //移除之前的小红点    [self removeBadgeOnItemIndex:index];    //新建小红点    UIView *badgeView = [[UIView alloc]init];    badgeView.tag = 888 + index;    badgeView.layer.cornerRadius = 5;//圆形    badgeView.backgroundColor = [UIColor redColor];//颜色：红色    CGRect tabFrame = self.frame;    //确定小红点的位置    float percentX = (index +0.6) / TabbarItemNums;    CGFloat x = ceilf(percentX * tabFrame.size.width);    CGFloat y = ceilf(0.1 * tabFrame.size.height);    badgeView.frame = CGRectMake(x, y, 10, 10);//圆形大小为10    [self addSubview:badgeView];}//隐藏小红点- (void)hideBadgeOnItemIndex:(int)index{    //移除小红点    [self removeBadgeOnItemIndex:index];}//移除小红点- (void)removeBadgeOnItemIndex:(int)index{    //按照tag值进行移除    for (UIView *subView in self.subviews) {        if (subView.tag == 888+index) {            [subView removeFromSuperview];        }    }}@end