Question

在Xamarin.Forms中，我可以通过创建自定义渲染器并使用适用于Android的ShowSoftInputOnFocus和适用于iOS的InputView来防止Entry视图获得焦点时弹出键盘。

但是在UWP中我可以用来阻止它吗？

Answer 1

防止Entry视图获得焦点时弹出键盘

UWP直接API支持隐藏和显示InputPane。您可以调用TryHide方法来隐藏键盘。对于xamarin，您可以使用DependencyService进行处理。有关更多信息，请参考以下代码。

界面

public interface IKeyboard
{
    void HideKeyboard();
    void ShowKeyboard();
    void RegisterAction(Action<object, KeyboardState> callback);
}
public enum KeyboardState
{
    Hide,
    Show
}

KeyboardImplementation.cs

public class KeyboardImplementation : IKeyboard
{
    private InputPane _inputPane;
    private Action<object, KeyboardState> action;

    public KeyboardImplementation()
    {
        _inputPane = InputPane.GetForCurrentView();
        _inputPane.Showing += OnInputPaneShowing;
        _inputPane.Hiding += OnInputPaneHiding;
    }
    public void HideKeyboard()
    {
        _inputPane.TryHide();
    }
    public void ShowKeyboard()
    {
        _inputPane.TryShow();
    }
    public void RegisterAction(Action<object, KeyboardState> callback)
    {
        action = callback;
    }

    private void OnInputPaneHiding(InputPane sender, InputPaneVisibilityEventArgs args)
    {
        action(this, KeyboardState.Hide);
    }

    private void OnInputPaneShowing(InputPane sender, InputPaneVisibilityEventArgs args)
    {
        action(this, KeyboardState.Show);
    }
}

用法

DependencyService.Get<IKeyboard>().RegisterAction((s,e)=> {
    if (e == KeyboardState.Show)
    {
        var keyboard = s as IKeyboard;
        keyboard.HideKeyboard();
    }
});

Xamarin Forms-防止键盘在UWP，Android，iOS的输入焦点上显示

1 个答案: