Xamarin.Andorid 代码方式弹出下拉框

转载于:https://my.oschina.net/u/1024921/blog/163142

 

 

public static void SetFocus(this Spinner snr)
        {
            snr.FindFocus();
            snr.FocusableInTouchMode = true;
            snr.RequestFocus();
            snr.FindFocus();
            snr.PerformClick();
        }