以编程方式隐藏/取消隐藏iOS 8中没有动画的状态栏

Question

我试图在视图显示和消失时以编程方式隐藏/取消隐藏状态栏。这是我的第一次尝试（有效），但它激活了我不想发生的UINavigationBar。

-(BOOL)prefersStatusBarHidden
{
    return YES;
}

但这基本上是我想要的工作，但它绝对没有。

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [[UIApplication sharedApplication]setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];
}
-(void)viewWillDisappear:(BOOL)animated
{
    [[UIApplication sharedApplication]setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];
    [super viewWillDisappear:animated];
}

Answer 1

您应该从

返回setStatusBarHidden:withAnimation:，而不是UIStatusBarAnimationNone

- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation

并致电

[self setNeedsStatusBarAppearanceUpdate];

完整代码：

@property（nonatomic，assign，readwrite）BOOL可见;

- (BOOL)prefersStatusBarHidden {
    return self.visible;
}

- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation {
    return UIStatusBarAnimationNone;
}

- (void)setVisible:(BOOL)visible {
    _visible = visible;
    [self setNeedsStatusBarAppearanceUpdate];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    self.visible = YES;
}

- (void)viewWillDisappear:(BOOL)animated {
    self.visible = NO;
    [super viewWillDisappear:animated];
}

Answer 2

只需添加一个简单的行，您的问题就会解决。

[[UIApplication sharedApplication] setStatusBarHidden:status];