关闭键盘后导航栏不会隐藏

Question

当我填写输入字段并关闭键盘时，我的导航栏不会隐藏。

在我填写输入字段之前，它是隐藏的。

我尝试了多种解决方案，但它们都不适合我。

this.Window.AddFlags(WindowManagerFlags.Fullscreen); // hide the status bar

int uiOptions = (int)Window.DecorView.SystemUiVisibility;

uiOptions |= (int)SystemUiFlags.LowProfile;
uiOptions |= (int)SystemUiFlags.Fullscreen;
uiOptions |= (int)SystemUiFlags.HideNavigation;
uiOptions |= (int)SystemUiFlags.ImmersiveSticky;

Window.DecorView.SystemUiVisibility = (StatusBarVisibility)uiOptions;

这是我OnCreate中MainActivity方法中的代码。

Answer 1

Here是演示。

实施View.IOnSystemUiVisibilityChangeListener界面：

    public void OnSystemUiVisibilityChange([GeneratedEnum] StatusBarVisibility visibility)
    {
        if (((int)visibility & (int)SystemUiFlags.Fullscreen) == 0)
        {
            Window.DecorView.SystemUiVisibility = (StatusBarVisibility)uiOptions;
        }

    }

为DecorView添加侦听器：

Window.DecorView.SetOnSystemUiVisibilityChangeListener(this);

覆盖OnWindowFocusChanged：

    public override void OnWindowFocusChanged(bool hasFocus)
    {
        base.OnWindowFocusChanged(hasFocus);
        Window.DecorView.SystemUiVisibility = (StatusBarVisibility)((int)SystemUiFlags.Fullscreen
            | (int)SystemUiFlags.ImmersiveSticky
            | (int)SystemUiFlags.LayoutHideNavigation
            | (int)SystemUiFlags.LayoutStable
            | (int)SystemUiFlags.HideNavigation);
    }