keyboard - 如何在 Xamarin Forms 中按下按钮时关闭键盘

Question

经过大量搜索，我找到了一种在 Xamarin Forms for iOS 中按下按钮时隐藏键盘的方法。所以分享如下。

如果有人可以改进它，或者分享 Android 端的解决方案，那就太好了。

Answer 1

我发现这很有用:

https://forums.xamarin.com/discussion/comment/172077#Comment_172077

界面:

public interface IKeyboardHelper
{
    void HideKeyboard();
}

iOS:

public class iOSKeyboardHelper : IKeyboardHelper
{
    public void HideKeyboard()
    {
        UIApplication.SharedApplication.KeyWindow.EndEditing(true);
    }
}

机器人:

public class DroidKeyboardHelper : IKeyboardHelper
{
    public void HideKeyboard()
    {
        var context = Forms.Context;
        var inputMethodManager = context.GetSystemService(Context.InputMethodService) as InputMethodManager;
        if (inputMethodManager != null && context is Activity)
        {
            var activity = context as Activity;
            var token = activity.CurrentFocus?.WindowToken;
            inputMethodManager.HideSoftInputFromWindow(token, HideSoftInputFlags.None);

            activity.Window.DecorView.ClearFocus();
        }
    }
}

Xamarin 表单中的用法:

DependencyService.Get<IKeyboardHelper>().HideKeyboard();