在任意UIView上显示Badge（兼容IOS6）

之前写过一篇文章在任意UIView上显示Badge，但IOS6上失败了，原来是苹果将Badge的类名改了，所以这里作下兼容，源码如下：

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1. - (UIView *)showBadgeValue:(NSString *)strBadgeValue
2. {
3. UITabBar *tabBar = [[UITabBar alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
4. UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"" image:nil tag:0];
5. item.badgeValue = strBadgeValue;
6. NSArray *array = [[NSArray alloc] initWithObjects:item, nil];
7. tabBar.items = array;
8. [item release];
9. [array release];
10. //寻找
11. for (UIView *viewTab in tabBar.subviews) {
12. for (UIView *subview in viewTab.subviews) {
13. NSString *strClassName = [NSString stringWithUTF8String:object_getClassName(subview)];
14. if ([strClassName isEqualToString:@"UITabBarButtonBadge"] ||
15. [strClassName isEqualToString:@"_UIBadgeView"]) {
16. //从原视图上移除
17. [subview removeFromSuperview];
18. //
19. [self addSubview:subview];
20. subview.frame = CGRectMake(self.frame.size.width-subview.frame.size.width, 0,
21. subview.frame.size.width, subview.frame.size.height);
22. [tabBar release];
23. return subview;
24. }
25. }
26. }
27. [tabBar release];
28. return nil;
29. }
31. - (void)removeBadgeValue
32. {
33. //
34. for (UIView *subview in self.subviews) {
35. NSString *strClassName = [NSString stringWithUTF8String:object_getClassName(subview)];
36. if ([strClassName isEqualToString:@"UITabBarButtonBadge"] ||
37. [strClassName isEqualToString:@"_UIBadgeView"]) {
38. [subview removeFromSuperview];
39. break;
40. }
41. }
42. }

- (UIView *)showBadgeValue:(NSString *)strBadgeValue{    UITabBar *tabBar = [[UITabBar alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];    UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"" image:nil tag:0];    item.badgeValue = strBadgeValue;    NSArray *array = [[NSArray alloc] initWithObjects:item, nil];    tabBar.items = array;    [item release];    [array release];    //寻找    for (UIView *viewTab in tabBar.subviews) {        for (UIView *subview in viewTab.subviews) {            NSString *strClassName = [NSString stringWithUTF8String:object_getClassName(subview)];            if ([strClassName isEqualToString:@"UITabBarButtonBadge"] ||                [strClassName isEqualToString:@"_UIBadgeView"]) {                //从原视图上移除                [subview removeFromSuperview];                //                [self addSubview:subview];                subview.frame = CGRectMake(self.frame.size.width-subview.frame.size.width, 0,                                            subview.frame.size.width, subview.frame.size.height);                [tabBar release];                return subview;            }        }    }    [tabBar release];    return nil;}- (void)removeBadgeValue{    //    for (UIView *subview in self.subviews) {        NSString *strClassName = [NSString stringWithUTF8String:object_getClassName(subview)];        if ([strClassName isEqualToString:@"UITabBarButtonBadge"] ||            [strClassName isEqualToString:@"_UIBadgeView"]) {            [subview removeFromSuperview];            break;        }    }}

一个方法是显示Badge用的，一个是隐藏（移除）用的。