private void CenterSelectedDigit()
{
DigitView selected = null;
for (int i = 0; i < DigitCount; i++)
{
selected = (DigitView)_mainLayout.GetChildAt(i);
if (selected.Selected)
{
break;
}
selected = null;
}
if (selected != null)
{
int width = Resources.DisplayMetrics.WidthPixels / 2;
this.SmoothScrollTo((int)selected.GetX() - width, (int)selected.GetY());
}
}
private void PinChanging(object sender, TextChangedEventArgs e)
{
int length = string.Concat(e.Text).Length;
for (int i = 0; i < DigitCount; i++)
{
DigitView digit = (DigitView)_mainLayout.GetChildAt(i);
if (length > i)
{
digit.Text = MASK;
}
else
{
digit.Text = string.Empty;
}
if (_pinInputField.HasFocus || _pinInputField.HasWindowFocus)
{
if (i == length)
{
digit.Selected = true;
CenterSelectedDigit();
}
else
{
digit.Selected = false;
}
}
}
if (length == DigitCount)
{
// Finished
var handler = PinCompleted;
handler?.Invoke(this, new PinCompletedEventArgs(_pinInputField.Text));
PinListener?.PinEntered(_pinInputField.Text);
_pinInputField.ClearFocus();
HideKeyboard();
}
}
private void LoadViews()
{
if (!ShouldRedraw)
{
return;
}
var pin = _pinInputField.Text;
//LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.WrapContent);
//layoutParams.Gravity = GravityFlags.Center;
_mainLayout.RemoveAllViews();
//_mainLayout.LayoutParameters = layoutParams;
_mainLayout.SetGravity(GravityFlags.Center);
_mainLayout.Orientation = Android.Widget.Orientation.Horizontal;
LinearLayout.LayoutParams digitParams = new LinearLayout.LayoutParams(LayoutParams.WrapContent, LayoutParams.WrapContent);
digitParams.SetMargins(DigitSpacing / 2, 0, DigitSpacing / 2, 0);
digitParams.Gravity = GravityFlags.Center;
// Add a digit view for each digit
for (int i = 0; i < DigitCount; i++)
{
DigitView digitView = new DigitView(Context);
digitView.LayoutParameters = digitParams;
digitView.SetWidth(DigitWidth);
digitView.SetHeight(DigitHeight);
digitView.Background = SetupDrawable();
digitView.SetTextColor(TextColor);
digitView.TextSize = TextSize;
digitView.Gravity = GravityFlags.Center;
if (pin.Length > i)
{
digitView.Text = MASK;
}
else if (pin.Length == i)
{
digitView.Selected = true;
}
_mainLayout.AddView(digitView);
}
_pinInputField.TextSize = 0;
_pinInputField.SetBackgroundColor(Color.Transparent);
_pinInputField.SetTextColor(Color.Transparent);
_pinInputField.SetCursorVisible(false);
_pinInputField.SetFilters(new IInputFilter[] { new InputFilterLengthFilter((int)DigitCount) });
_pinInputField.InputType = InputTypes.ClassNumber;
_pinInputField.ImeOptions = (ImeAction)ImeFlags.NoExtractUi;
_pinInputField.MovementMethod = null;
_pinInputField.FocusChange -= ViewFocused;
_pinInputField.FocusChange += ViewFocused;
_pinInputField.TextChanged -= PinChanging;
_pinInputField.TextChanged += PinChanging;
}