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| using System; | |
| using Android.Content; | |
| using Android.Runtime; | |
| using Android.Support.V4.View; | |
| using Android.Util; | |
| using Android.Views; | |
| namespace Android.Base | |
| { | |
| [Register("ViewPagerWithCustomSwipe")] | |
| public class ViewPagerWithCustomSwipe : ViewPager | |
| { | |
| private float InitialX; | |
| private SwipeDirection DisabledSwipeDirection; | |
| public ViewPagerWithCustomSwipe(Context context, IAttributeSet attrs) : base(context, attrs) | |
| { | |
| } | |
| protected ViewPagerWithCustomSwipe(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer) | |
| { | |
| } | |
| public ViewPagerWithCustomSwipe(Context context) : base(context) | |
| { | |
| } | |
| public override bool OnTouchEvent(MotionEvent e) | |
| { | |
| if (IsSwipeAllowed(e)) | |
| return base.OnTouchEvent(e); | |
| return false; | |
| } | |
| public override bool OnInterceptTouchEvent(MotionEvent e) | |
| { | |
| if (IsSwipeAllowed(e)) | |
| return base.OnInterceptTouchEvent(e); | |
| return false; | |
| } | |
| private bool IsSwipeAllowed(MotionEvent e) | |
| { | |
| if (DisabledSwipeDirection == SwipeDirection.All) | |
| return false; | |
| if (DisabledSwipeDirection == SwipeDirection.None) | |
| return true; | |
| if (e.Action == MotionEventActions.Down) | |
| InitialX = e.GetX(); | |
| if (e.Action == MotionEventActions.Move) | |
| { | |
| float diffX = e.GetX() - InitialX; | |
| if (diffX > 0 && DisabledSwipeDirection == SwipeDirection.Right) | |
| return false; | |
| else if (diffX < 0 && DisabledSwipeDirection == SwipeDirection.Left) | |
| return false; | |
| } | |
| return true; | |
| } | |
| public void DisableSwipe(SwipeDirection direction) | |
| { | |
| DisabledSwipeDirection = direction; | |
| } | |
| } | |
| public enum SwipeDirection | |
| { | |
| All = 0, | |
| Left = 1, | |
| Right = 2, | |
| None = 3 | |
| } | |
| } |
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| <ViewPagerWithCustomSwipe | |
| android:id="@+id/viewpager" | |
| android:background="@color/white" | |
| android:layout_width="match_parent" | |
| android:layout_height="match_parent" /> |
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| public class CustomPageChangeListener : Java.Lang.Object, ViewPager.IOnPageChangeListener | |
| { | |
| ViewPagerWithCustomSwipe _vp; | |
| public CustomPageChangeListener(ViewPagerWithCustomSwipe vp) | |
| { | |
| _vp = vp; | |
| } | |
| public void OnPageScrollStateChanged(int state) | |
| { | |
| EnableDisableSwipeRefresh(state == ViewPager.ScrollStateIdle); | |
| } | |
| public void OnPageScrolled(int position, float positionOffset, int positionOffsetPixels) | |
| { | |
| } | |
| public void OnPageSelected(int position) | |
| { | |
| // TODO Your custom selector | |
| if(position == customPosition) | |
| { | |
| _vp.DisableSwipe(SwipeDirection.CustomDirection); | |
| } | |
| } | |
| } |
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