I have two view pager in a Same fragment. Both have same number of Items.
My Need is When I Swipe a view pager the other view pager also need to swipe and vice Versa. How Can I implement that.
Set an OnPageChangeListener to the first ViewPager.
In onPageScrollStateChanged(), when the state is SCROLL_STATE_DRAGGING, call beginFakeDrag() on the other ViewPager. When the state is idle or settling, call endFakeDrag() on the other ViewPager.
In onPageScrolled(), call fakeDragBy() on the other ViewPager. You may need to do some tracking, as onPageScrolled() with report an absolute position, and fakeDragBy() is cumulative.
Related
I have a viewpager that includes one recycler view.
Every item of the recycler view can be dismissed by swipe.
When i apply the recycler view in the view pager, the view pager does not allow the swipe-to-dismiss and overlay the control with the page swapping.
When i detect the swipe in the recycler, i disable the viewpager onInterceptTouchEvent, but the swipe movement initiated previously is restarted.
Anyone has a solution ?
Using a swipe action on a recyclerview item works against the swiping action of a viewpager. Essentially, you're telling the user to do the same action on the same screen to do two entirely different actions. This is bad design. Ask yourself if it is necessary to use both of these things. I had the same predicament and removed the viewpager entirely.
In Android View pager OnPageChangeListener onpageselected triggers all the time. I want to prevent that, if it is scrolled fastly. Also, the onpageselected method should be called only if the scroll stopped at a page. Is there any way to handle this situation?
What i am doing is showing Fragment in view pager and has Gesture detector implemented on Whole view. When we touch the View i want to hide some layouts from current fragment and all other fragments in view pager.
But problem is this that view pager automatically generates next and previous view
and when i swipe to next view it does not hide those layouts but other Fragments other than its consecutive ones Layouts are Gone.
How do i refresh consecutive fragments of view pager from fragment itself.
Thanx in advance.
You should have an activity that control that ViewPager and detects what Fragments to display. That's the place to update the fragments.
Use the OnPageChangeListener listener and inform the fragment of the change.
If you want to do it from the Fragment itself, try onStart() or onResume()
Fragments can be notified of events, so they can take actions accordingly.
One way of doing this would be using a broadcast like in ViewPager Activity to notify a Fragment of a specific event
Other way is like #Antonio said, making it on the OnPageChangeListener (I suppose that would be a lot cleaner).
while using View pager, I face a strange problem.
In my project i have three fragment in a view pager, but while loading the second fragment by swiping from left to right , the OnCreate of third Fragment is automatically calling.in onCreate method i called an Api for getting some data.hence the Api is also called.Normal scenario is like that it only called while loading third fragment by swiping from left to right.
Thanks in Advance
View pager works same as listview.
It have same buffer of fragments to increase the UI experience.
so it creates fragments in advance and show to he user when asked.
so use http://developer.android.com/reference/android/support/v4/view/ViewPager.OnPageChangeListener.html
for your purpose.
Thanks
I have a layout with a ViewPager and also right left arrows inside the ViewPager for manually moving to the next view without swiping.
While the user is swiping, I'd like to hide those arrows (or maybe only show the right one when the user is swiping to the right...)
How can I find out if the user is scrolling a ViewPager?
Found the solution:
Method onPageScrollStateChanged from SimpleOnPageChangeListener
http://developer.android.com/reference/android/support/v4/view/ViewPager.SimpleOnPageChangeListener.html#onPageScrollStateChanged(int)
the state argument of onPageScrollStateChanged is 1 when you start draggin, 2 when you let go and 0 when the ViewPager has stopped scrolling