/
MyTimePickerRenderer.cs
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/
MyTimePickerRenderer.cs
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[assembly: ExportRendererAttribute(typeof(MyTimePicker), typeof(MyTimePickerRenderer))]
namespace MyProject.iOS.Renderers
{
public class MyTimePickerRenderer : PickerRenderer
{
internal static IDevice Device;
internal const int ComponentCount = 6;
private const int _labelSize = 30;
private MyTimePicker _myTimePicker;
public MyTimePickerRenderer()
{
// This is dependent on XForms (see Update note)
Device = Resolver.Resolve<IDevice>();
}
protected override void OnElementChanged (ElementChangedEventArgs<Picker> e)
{
base.OnElementChanged (e);
if (Control != null)
{
Control.BorderStyle = UITextBorderStyle.None;
_myTimePicker = e.NewElement as MyTimePicker;
var customModelPickerView = new UIPickerView
{
Model = new MyTimePickerView(_myTimePicker)
};
SelectPickerValue(customModelPickerView, _myTimePicker);
CreatePickerLabels(customModelPickerView);
Control.InputView = customModelPickerView;
}
}
private void SelectPickerValue(UIPickerView customModelPickerView, MyTimePicker myTimePicker)
{
customModelPickerView.Select(new nint(myTimePicker.SelectedTime.Hours), 0, false);
customModelPickerView.Select(new nint(myTimePicker.SelectedTime.Minutes), 2, false);
customModelPickerView.Select(new nint(myTimePicker.SelectedTime.Seconds), 4, false);
}
private void CreatePickerLabels(UIPickerView customModelPickerView)
{
nfloat verticalPosition = (customModelPickerView.Frame.Size.Height / 2) - (_labelSize / 2);
nfloat componentWidth = new nfloat(Device.Display.Width / ComponentCount / Device.Display.Scale);
var hoursLabel = new UILabel(new CGRect(componentWidth, verticalPosition, _labelSize, _labelSize));
hoursLabel.Text = "hrs";
var minutesLabel = new UILabel(new CGRect((componentWidth * 3) + (componentWidth / 2), verticalPosition, _labelSize, _labelSize));
minutesLabel.Text = "mins";
var secondsLabel = new UILabel(new CGRect((componentWidth * 5) + (componentWidth / 2), verticalPosition, _labelSize, _labelSize));
secondsLabel.Text = "secs";
customModelPickerView.AddSubview(hoursLabel);
customModelPickerView.AddSubview(minutesLabel);
customModelPickerView.AddSubview(secondsLabel);
}
protected override void OnElementPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (Control == null)
{
return;
}
if (e.PropertyName == "SelectedIndex")
{
var customModelPickerView = (UIPickerView)Control.InputView;
SelectPickerValue(customModelPickerView, _myTimePicker);
}
}
public class MyTimePickerView : UIPickerViewModel
{
private readonly MyTimePicker _myTimePicker;
public MyTimePickerView(MyTimePicker picker)
{
_myTimePicker = picker;
}
public override nint GetComponentCount(UIPickerView pickerView)
{
return new nint(MyTimePickerRenderer.ComponentCount);
}
public override nint GetRowsInComponent(UIPickerView pickerView, nint component)
{
if (component == 0)
{
// Hours
return new nint(24);
}
if (component % 2 != 0)
{
// Odd components are labels for hrs, mins and secs
return new nint(1);
}
// Minutes & seconds
return new nint(60);
}
public override string GetTitle(UIPickerView pickerView, nint row, nint component)
{
if (component == 0)
{
return row.ToString();
}
else if (component == 1)
{
return null;
}
else if (component == 3)
{
return null;
}
else if (component == 5)
{
return null;
}
return row.ToString("00");
}
public override void Selected(UIPickerView pickerView, nint row, nint component)
{
var selectedHours = pickerView.SelectedRowInComponent(0);
var selectedMinutes = pickerView.SelectedRowInComponent(2);
var selectedSeconds = pickerView.SelectedRowInComponent(4);
var time = new TimeSpan((int)selectedHours, (int)selectedMinutes, (int)selectedSeconds);
_myTimePicker.SelectedTime = time;
}
public override nfloat GetComponentWidth(UIPickerView pickerView, nint component)
{
var screenWidth = MyTimePickerRenderer.Device.Display.Width;
var componentWidth = screenWidth /
MyTimePickerRenderer.ComponentCount /
MyTimePickerRenderer.Device.Display.Scale;
return new nfloat(componentWidth);
}
}
}