ios - UINavigationBar - 在嵌套页面中隐藏 subview

Question

我在 uiTableView 主页中通过以下代码使用 MKNumberBadgeView 添加了消息计数 -

-(void)counterBtn{

    _numberBadge = [[MKNumberBadgeView alloc] initWithFrame:CGRectMake(25, -10, 40, 40)];
    _numberBadge.strokeColor = [UIColor colorWithRed:239.0/255.0 green:117.0/255.0 blue:33/255.0 alpha:0];
    _numberBadge.fillColor = [UIColor colorWithRed:239.0/255.0 green:117.0/255.0 blue:33/255.0 alpha:1];
    _numberBadge.shine = NO;
    _numberBadge.hideWhenZero = YES;
    _numberBadge.value = _countBtnNo;
    [self.navigationController.navigationBar addSubview:_numberBadge];

}

一切正常 - 但如果我从这个 View 导航到 subview ，计数器仍然显示在后退按钮上，如屏幕截图所示 -

是否可以暂时隐藏此按钮 - 然后在我返回主页时再次显示它？

我在 subview 的 viewdidload 方法中考虑过这些问题吗？ -

[self.navigationController.navigationBar.subviews setHidden:YES];

Answer 1

在 HomeScreen 中试试这个:

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    _numberBadge.hidden = NO;
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    _numberBadge.hidden = YES;
}