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editText.setPadding(0, 0, 0, 0);
editText.setBackground(null);

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android:padding="0dp"
android:background="@null"

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textView.textContainerInset = .zero
textView.textContainer.lineFragmentPadding = 0

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textView.isScrollEnabled = false

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textView.isEditable = false
textView.isSelectable = true

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using Xamarin.Forms;
...

public class ExtendedDatePicker : DatePicker
{
}

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using Foundation;
using UIKit;
using Xamarin.Forms;
...

public class DatePickerDelegate : NSObject, IUITextFieldDelegate
{
    [Export("textField:shouldChangeCharactersInRange:replacementString:")]
    public bool ShouldChangeCharacters(UITextField textField, NSRange range, string replacementString) =>
        false;

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using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;
...
    
[assembly: ExportRenderer(typeof(ExtendedDatePicker), typeof(ExtendedDatePickerRenderer))]
...

public class ExtendedDatePickerRenderer : DatePickerRenderer
{
    private readonly DatePickerDelegate _delegate = new DatePickerDelegate();

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using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
...

[assembly: ExportRenderer(typeof(ExtendedDatePicker), typeof(ExtendedDatePickerRenderer))]
...

public class ExtendedDatePickerRenderer : DatePickerRenderer
{
    public ExtendedDatePickerRenderer(Context context) : base(context)

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using Android.Views;
...
    
public class CustomSelectionActionModeCallback : Java.Lang.Object, ActionMode.ICallback
{
    public bool OnActionItemClicked(ActionMode m, IMenuItem i) => false;

    public bool OnCreateActionMode(ActionMode mode, IMenu menu) => false;

    public bool OnPrepareActionMode(ActionMode mode, IMenu menu) => true;