How do I programmatically hook into an Android ScrollView when it starts/ends scrolling? I have a custom View which is placed inside a ScrollView. I want my custom View to be informed right before the scrolling begins and just after the scrolling ends to execute some arbitrary code.
Note: I'm coming from iOS development and basically I'm looking for the Android equivalent of UIScrollViewDelegate.
For achieveing this, you need to create a Custom scrollview by inheriting from scrollview.
Check below link. It will help you :
Synchronise ScrollView scroll positions - android
Android: Detect when ScrollView stops scrolling
Related
I am trying to create a card deck in the Bumble style (you have a card that you can swipe horizontally and can also scroll vertically to see more photos/info)
My problem is that whilst on iOS this works perfectly fine, in Android the ScrollView inside the PanResponder component seems to take priority on the gesture handling.
I have tried to dynamically change the scrollEnabled on the ScrollView as soon as a horizontal gesture appears, but this did not help.
Any chance you have any solutions?
By default when I scroll the contents of scroll view and take off my finger the contents keep scrolling for a while after then stops. I want to know if there is a way to stop scrollview from keeping going after I take off my finger?
I'm using xamarin.android, tried Disable "flinging" in android ScrollView? solution but didn't work.
I want to develop an app that includes GridView and I want it to be some thing like horizontal ListView above a gridvew .Horizontal view displays images downloaded from url.I saw this touturial ( horizontal scrollview used)
and saw this to put the GridView inside scrollView because i want to put the gridview(episode #2) and horizontal view (episode #1) in vertical scrollview(episode #3) . I need to scroll the horizontal view vertically when a user is scrolling the gridview and not to have fixed position at the top of the screen.
I have no idea how to do this (use horizontal ScrollView or horizontal Listview)?
after vertical scrolling I want it to be like this (horizontal view must get scrolled vertically):
This is a custom interaction, so you probably will not be able to use a "standard" tool for this. You may want something like the FloatingActionButton (an example here: http://antonioleiva.com/collapsing-toolbar-layout/) but you also want it to scroll, so you may need to extend that class.
Also, you could use touch events to do a custom animation on the area, because you will need to track when it is displayed and the direction/distance of the motion event to collapse/expand it. You also would need to know anchors on the list, to determine when it should reappear...
This is a cool design concept, but usually "cool" = "difficult" because it's not standard.
I am using Horizontal scrolling in my application at some condition i don't want my horizontal scrolling to occur. so can any one help me how to disable the horizontal scrolling.
You should add another layout in your main view , and give requestFocus() to that view.
so your scroll view will get disable.
This solution work for me in my app.
I have problem in scrolling of webview vertically when it's scrolled along vertically,where this webview is with in scrollview tag,how can i enable the scrolling for webview and to disable the scrolling of whole layout when its on webview contained layout.
Because of the way touch events are consume in android it is not recommended or even really possible to have two Views that consume and react to the same move events in the same axis. In other words, you cannot put a WebView in a ScrollView. You would not be able to put a ListView in a ScrollView and have it work either since they both scroll vertically.