Xamarin.forms Xamarin表单：在TimePicker中关闭时钟pop后，UI上会显示不同的时间？

我在时间选择器中使用下面的设置以5的倍数设置时间。使用自定义渲染器，我可以选择5倍的时间。但在选择时间后，当时钟弹出关闭时，UI上会显示不同的时间。这个问题只存在于android平台，对于ios来说，一切都是例外

我的代码：

public class CustomTimePickerRenderer : TimePickerRenderer
{
    protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.TimePicker> e)
    {
        base.OnElementChanged(e);

        TimePickerDialogIntervals timePickerDlg = new TimePickerDialogIntervals(this.Context, new EventHandler<TimePickerDialogIntervals.TimeSetEventArgs>(UpdateDuration),
            Element.Time.Hours, Element.Time.Minutes, true);

        var control = new EditText(this.Context);
        control.Focusable = false;
        control.FocusableInTouchMode = false;
        control.Clickable = false;
        control.Click += (sender, ea) => timePickerDlg.Show();
        control.Text = Element.Time.Hours.ToString("00") + ":" + Element.Time.Minutes.ToString("00");

        SetNativeControl(control);
    }

    void UpdateDuration(object sender, Android.App.TimePickerDialog.TimeSetEventArgs e)
    {
        Element.Time = new TimeSpan(e.HourOfDay, e.Minute, 0);
        Control.Text = Element.Time.Hours.ToString("00") + ":" + Element.Time.Minutes.ToString("00");
    }
}

public class TimePickerDialogIntervals : TimePickerDialog
{
    public const int TimePickerInterval = 05;
    private bool _ignoreEvent = false;

    public TimePickerDialogIntervals(Context context, EventHandler<TimePickerDialog.TimeSetEventArgs> callBack, int hourOfDay, int minute, bool is24HourView)
        : base(context, (sender, e) =>
        {
            callBack(sender, new TimePickerDialog.TimeSetEventArgs(e.HourOfDay, e.Minute * TimePickerInterval));
        }, hourOfDay, minute / TimePickerInterval, is24HourView)
    {
    }

    public override void OnTimeChanged(Android.Widget.TimePicker view, int hourOfDay, int minute)
    {
        base.OnTimeChanged(view, hourOfDay, minute);

        if (_ignoreEvent) return;

        if (minute % TimePickerInterval != 0)
        {
            int minuteFloor = minute - (minute % TimePickerInterval);
            minute = minuteFloor + (minute == minuteFloor + 1 ? TimePickerInterval : 0);
            if (minute == 60)
                minute = 0;
            _ignoreEvent = true;
            view.CurrentMinute = (Java.Lang.Integer)minute;
            _ignoreEvent = false;
        }
    }
}

public class TimePickerDialogIntervals : TimePickerDialog
{
    public const int TimePickerInterval = 15;
    private bool _ignoreEvent = false;
    public TimePickerDialogIntervals(Context context, EventHandler<TimePickerDialog.TimeSetEventArgs> callBack, int hourOfDay, int minute, bool is24HourView) :
        base(context, (sender, e) =>
        {
            callBack(sender, new TimePickerDialog.TimeSetEventArgs(e.HourOfDay, e.Minute));//remove '* TimePickerInterval'
        }, hourOfDay, minute / TimePickerInterval, is24HourView)
    {
    }
    ...
}

公共类CustomTimePickerRenderer:TimePickerRenderer
{
受保护的覆盖无效OnElementChanged（ElementChangedEventArgs e）
{
基础。一个要素发生变化（e）；
TimePickerDialogIntervals timePickerDlg=新的TimePickerDialogIntervals（this.Context，new EventHandler（UpdateDuration），
Element.Time.Hours，Element.Time.Minutes，true）；
var control=neweditText（this.Context）；
control.Focusable=false；
control.FocusableInTouchMode=false；
control.Clickable=false；
控件。单击+=（发送方，ea）=>timePickerDlg.Show（）；
control.Text=Element.Time.Hours.ToString（“00”）+：“+Element.Time.Minutes.ToString（“00”）；
SetNativeControl（控制）；
}
无效更新（对象发送者，Android.App.TimePickerDialog.TimeSetEventArgs e）
{
元素时间=新的时间跨度（例如小时，分钟，0）；
Control.Text=Element.Time.Hours.ToString（“00”）+：“+Element.Time.Minutes.ToString（“00”）；
}
}
公共类TimePickerDialog间隔：TimePickerDialog
{
public const int TimePickerInterval=05；
私有bool_ignoreEvent=false；
public TimePickerDialogIntervals（上下文上下文、事件处理程序回调、int hourOfDay、int minute、bool is24HourView）
：base（上下文，（发送者，e）=>
{
回调（发送方，新时间选择器Dialog.TimeSetEventArgs（e.HourOfDay，e.Minute*TimePickerInterval））；
}，HourrofDay，分钟/时间选择器Interval，IS24小时视图）
{
}
public override void OnTimeChanged（Android.Widget.TimePicker视图，int hourOfDay，int minute）
{
基本时间更改（视图、小时、天、分钟）；
如果（_ignoreEvent）返回；
如果（分钟%TimePickerInterval！=0）
{
int minuteFloor=分钟-（分钟%TimePickerInterval）；
分钟=minuteFloor+（分钟=minuteFloor+1？TimePickerInterval:0）；
如果（分钟==60）
分钟=0；
_ignoreEvent=true；
view.CurrentMinute=（Java.Lang.Integer）分钟；
_ignoreEvent=false；
}
}
}

---

当时钟弹出窗口关闭时，为什么UI上会显示不同的时间？

问题是因为分钟已乘以“TimePickerInterval”（05）。将参数更改为“e.Minute”将按预期工作

代码：

public class CustomTimePickerRenderer : TimePickerRenderer
{
    protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.TimePicker> e)
    {
        base.OnElementChanged(e);

        TimePickerDialogIntervals timePickerDlg = new TimePickerDialogIntervals(this.Context, new EventHandler<TimePickerDialogIntervals.TimeSetEventArgs>(UpdateDuration),
            Element.Time.Hours, Element.Time.Minutes, true);

        var control = new EditText(this.Context);
        control.Focusable = false;
        control.FocusableInTouchMode = false;
        control.Clickable = false;
        control.Click += (sender, ea) => timePickerDlg.Show();
        control.Text = Element.Time.Hours.ToString("00") + ":" + Element.Time.Minutes.ToString("00");

        SetNativeControl(control);
    }

    void UpdateDuration(object sender, Android.App.TimePickerDialog.TimeSetEventArgs e)
    {
        Element.Time = new TimeSpan(e.HourOfDay, e.Minute, 0);
        Control.Text = Element.Time.Hours.ToString("00") + ":" + Element.Time.Minutes.ToString("00");
    }
}

public class TimePickerDialogIntervals : TimePickerDialog
{
    public const int TimePickerInterval = 05;
    private bool _ignoreEvent = false;

    public TimePickerDialogIntervals(Context context, EventHandler<TimePickerDialog.TimeSetEventArgs> callBack, int hourOfDay, int minute, bool is24HourView)
        : base(context, (sender, e) =>
        {
            callBack(sender, new TimePickerDialog.TimeSetEventArgs(e.HourOfDay, e.Minute * TimePickerInterval));
        }, hourOfDay, minute / TimePickerInterval, is24HourView)
    {
    }

    public override void OnTimeChanged(Android.Widget.TimePicker view, int hourOfDay, int minute)
    {
        base.OnTimeChanged(view, hourOfDay, minute);

        if (_ignoreEvent) return;

        if (minute % TimePickerInterval != 0)
        {
            int minuteFloor = minute - (minute % TimePickerInterval);
            minute = minuteFloor + (minute == minuteFloor + 1 ? TimePickerInterval : 0);
            if (minute == 60)
                minute = 0;
            _ignoreEvent = true;
            view.CurrentMinute = (Java.Lang.Integer)minute;
            _ignoreEvent = false;
        }
    }
}

public class TimePickerDialogIntervals : TimePickerDialog
{
    public const int TimePickerInterval = 15;
    private bool _ignoreEvent = false;
    public TimePickerDialogIntervals(Context context, EventHandler<TimePickerDialog.TimeSetEventArgs> callBack, int hourOfDay, int minute, bool is24HourView) :
        base(context, (sender, e) =>
        {
            callBack(sender, new TimePickerDialog.TimeSetEventArgs(e.HourOfDay, e.Minute));//remove '* TimePickerInterval'
        }, hourOfDay, minute / TimePickerInterval, is24HourView)
    {
    }
    ...
}

公共类TimePickerDialogIntervals:TimePickerDialog
{
public const int TimePickerInterval=15；
私有bool_ignoreEvent=false；
public TimePickerDialogIntervals（上下文上下文、事件处理程序回调、int hourOfDay、int minute、bool is24HourView）：
基本（上下文，（发送方，e）=>
{
回调（发送方，新的TimePickerDialog.TimeSetEventArgs（e.HourOfDay，e.Minute））；//删除“*TimePickerInterval”
}，HourrofDay，分钟/时间选择器Interval，IS24小时视图）
{
}
...
}