android studio recyclerview scroll up automatically

Android studio recyclerview scroll up automatically how to#
Android studio recyclerview scroll up automatically archive#
Android studio recyclerview scroll up automatically code#
Android studio recyclerview scroll up automatically series#

We need to modify getItemCount() - we return a number of items in our dataset +1 because we have also a header (lines 43-45).We need to modify onCreateViewHolder and onBindViewHolder() methods to return and bind a normal item if it’s type is TYPE_ITEM and a header item if it’s type is TYPE_HEADER (lines 14-34).We need to tell the Recycler which type item it wants to display is (lines 49-54).And this is exactly what we want to do - our first item will be a header view, so it will be different from the rest of items (lines 3-4). Item types are used when you want to have different layout for some of your list items. RecyclerView is a very flexible component. We need to define types of items that the Recycler will display.Adding a header to the RecyclerView:įirst we need to modify our Adapter a little: But as I said, I wanted to show you another way - maybe a little more complicated which involves adding a header to the list. Our layout would look like this:Īnd it would do the thing. But we have to be careful because RecyclerView will clip it’s chilren to padding by default so we have to turn it off. This is the moment when we have two options that I mentioned at te beginning.įirst option will be to add a paddingTop to our RecyclerView and set it to Toolbar height. what is this? The Toolbar hides our list items and as you have probably noticed it’s because we are using FrameLayout in our activity_main.xml. We got all the pieces in place so let’s run it!

Android studio recyclerview scroll up automatically series#

If you want to find about more about RecyclerView, I recommend you reading Mark Allison’s great series of posts

It’s a basic RecyclerView.Adapter implementation. Now we can jump to the RecyclerAdapter code:

Our list will be showing cards with only text so this is it - easy! But first, we have to add a layout for our list items: Now we will create an adapter for our RecyclerView. It only implements onCreate which does the following things:

Android studio recyclerview scroll up automatically code#

Let’s jump into the code of our MainActivity:Īs you can see it’s a relatively small class. If we don’t do this, there will be an empty space visible above the list when we hide the Toolbar. We need to put them in a FrameLayout because Toolbar needs to be overlayed on RecyclerView. It’s a simple layout with RecyclerView, Toolbar and ImageButton which will be our FAB.

The next thing is to create our Activity layout: Now we should define styles.xml so that our app will use Material Theme but without ActionBar (we will be using Toolbar): We will begin from creating our project and adding necesarry libraries:

Android studio recyclerview scroll up automatically how to#

I decided to implement only the second one because I saw multiple questions on how to add a header to RecyclerView and this is a good opportunity to cover this but I will also briefly descripe the first one. There are two ways that come to my mind on how to achieve this: We will be using RecyclerView for our list but it’s possible to implement it in any other scrolling container (with a little more work in some cases i.e. Upon scrolling back up, the app bar should be shown again.” “Where appropriate, upon scrolling down, the app bar can scroll off the screen, leaving more vertical space for content. This behavior is mentioned in Material Design Checklist. In this post we will see how to achieve an effect that you can observe in Google+ app - hiding Toolbar and FAB (and any other views) when list is scrolling down and showing it again when it’s scrolling up. This post is outdated, you should jump to part 3 or stay if you are bored :)

Android studio recyclerview scroll up automatically archive#

Archive Feed Github Twitter How to hide/show Toolbar when list is scroling (part 1)