iOS tabbar 角标

#import "UITabBar+badge.h"

#import "ContantHead.h"

#define TabbarBadge_Nums 5.0

@implementation UITabBar (badge)

//显示小红点

- (void)showBadgeOnItemIndex:(int)index withNum:(NSInteger)badgeNum{

//移除之前的小红点

[self removeBadgeOnItemIndex:index];

//新建小红点

UILabel *labNum = [[UILabel alloc]init];

labNum.tag = 888 + index;

labNum.layer.masksToBounds = YES;

labNum.layer.cornerRadius = 20/2;//圆形

labNum.backgroundColor = [UIColor redColor];//颜色：红色

CGRect tabFrame = self.frame;

//确定小红点的位置

float percentX = (index +0.6) / TabbarBadge_Nums;

CGFloat x = ceilf(percentX * tabFrame.size.width);

CGFloat y = ceilf(0.1 * tabFrame.size.height)-5;

labNum.frame = CGRectMake(x, y, 20, 20);//圆形大小为10

//-30*screenWidth/375

labNum.text = [NSString stringWithFormat:@"%ld",badgeNum];

labNum.textColor = [UIColor whiteColor];

labNum.adjustsFontSizeToFitWidth = YES;

labNum.textAlignment = NSTextAlignmentCenter;

[self addSubview:labNum];

}

//隐藏小红点

- (void)hideBadgeOnItemIndex:(NSInteger)index{

//移除小红点

[self removeBadgeOnItemIndex:index];

}

//移除小红点

- (void)removeBadgeOnItemIndex:(NSInteger)index{

//按照tag值进行移除

for (UIView *subView in self.subviews) {

if (subView.tag == 888+index) {

[subView removeFromSuperview];

}

}

}