private void SetUpBar()
{
LinearLayout listLayout = FindViewById <LinearLayout>(Resource.Id.ll_list);
View imgBar = FindViewById <View>(Resource.Id.img_bar);
int minY = 0;
listLayout.ViewTreeObserver.GlobalLayout += (s, e) =>
{
minY = (int)listLayout.GetY();
};
imgBar.Touch += (s, e) =>
{
var handled = false;
if (e.Event.Action == MotionEventActions.Down)
{
// do stuff
yDelta = (int)(listLayout.GetY() - e.Event.RawY);
handled = true;
}
else if (e.Event.Action == MotionEventActions.Up)
{
// do other stuff
handled = true;
}
else if (e.Event.Action == MotionEventActions.Move)
{
if (listLayout.GetY() <= minY || e.Event.RawY + yDelta <= minY)
{
listLayout.Animate().Y(e.Event.RawY + yDelta).SetDuration(0).Start();
}
}
e.Handled = handled;
};
}
protected int[] calculateCurrentCenterCoordinatesOfPagerElement(int activeElementIndex)
{
int y = (int)(mPagerIconsContainer.GetY() + mPagerIconsContainer.Height / 2);
if (activeElementIndex >= mPagerIconsContainer.ChildCount)
{
return new int[] { mRootLayout.Width / 2, y }
}
;
View pagerElem = mPagerIconsContainer.GetChildAt(activeElementIndex);
int x = (int)(mPagerIconsContainer.GetX() + pagerElem.GetX() + pagerElem.Width / 2);
return(new int[] { x, y });
}
protected Animator createContentCenteringVerticalAnimation(View newContentText, View newContentIcon)
{
newContentText.Measure(View.MeasureSpec.MakeMeasureSpec(mContentCenteredContainer.Width, MeasureSpecMode.AtMost), -2);
int measuredContentTextHeight = newContentText.MeasuredHeight;
newContentIcon.Measure(-2, -2);
int measuredContentIconHeight = newContentIcon.MeasuredWidth;
int newHeightOfContent = measuredContentIconHeight + measuredContentTextHeight + ((ViewGroup.MarginLayoutParams)mContentTextContainer.LayoutParameters).TopMargin;
Animator centerContentAnimation = ObjectAnimator.OfFloat(mContentCenteredContainer, "y", mContentCenteredContainer.GetY(),
(mContentRootLayout.Height - newHeightOfContent) / 2);
centerContentAnimation.SetDuration(ANIM_CONTENT_CENTERING_TIME);
centerContentAnimation.SetInterpolator(new DecelerateInterpolator());
return(centerContentAnimation);
}