其实重叠的原因是系统添加了自带的UITabBarButton，将其删除即可
解决方法一：
在自定义的UITabBarController中添加以下代码
- (void)viewWillLayoutSubviews {
[super viewWillLayoutSubviews];
for (UIView *subView in self.tabBar.subviews) {
// 删除系统自带的tabBarButton
![subView isKindOfClass:NSClassFromString(@"UITabBarButton")] ?: [subView removeFromSuperview];
}
}
解决方法二：
在自定义的NavigationController中遵循UINavigationController的代理
设置代理：
- (void)viewDidLoad{
[super viewDidLoad];
self.delegate = self;
}
实现代理：
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
// 删除系统自带的tabBarButton
for (UIView *tabBar in self.tabBarController.tabBar.subviews) {
if ([tabBar isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
[tabBar removeFromSuperview];
}
}
}
解决方法二：
在自定义的NavigationController中添加如下代码：
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(removeTabBarBtn) name:@"removeTabBarBtn" object:nil];
}
- (void)removeTabBarBtn {
for (UIView *tabBar in self.tabBarController.tabBar.subviews) {
if ([tabBar isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
[tabBar removeFromSuperview];
}
}
}
-(void)dealloc {
[[NSNotificationCenter defaultCenter]removeObserver:self name:@"removeTabBarBtn" object:nil];
}
并在调用popTo或pop方法的viewController中发出通知：
[self.navigationController popToRootViewControllerAnimated:YES];
/// 或者
///[self.navigationController popViewControllerAnimated:YES];
[[NSNotificationCenter defaultCenter] postNotificationName:@"removeTabBarBtn" object:nil userInfo:nil];
