在Xamarin.Android中将Keycode转换为char

Posted 2021-04-30

在我的自定义视图中按下某个键时，会调用OnKeyPress：

public DrawView(Context context, IAttributeSet attributeSet) : base(context, attributeSet)
{
        KeyPress += OnKeyPress;
}

private void OnKeyPress(object sender, KeyEventArgs e)
{
        Keycode code = e.KeyCode;
        // How to convert to char?
}

如何将Keycode转换为char？例如：

"Space" -> " "
"Enter" -> "
"
"A"     -> "A"

答案

尝试这样的事情：

public override bool OnKeyUp (Keycode keyCode, KeyEvent e)
{
    char keyPressed = (char) e.GetUnicodeChar();
    Log.Debug (string.Format ("On KeyUp is:{0}", keyPressed));
    return base.OnKeyUp (keyCode, e);
}

另一答案

根据Vaikesh的回答，这是解决方案：

private void OnKeyPress(object sender, KeyEventArgs e)
{
    char c = Convert.ToChar(e.UnicodeChar);
}