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Build expandable descendant navigation, inspired by Google Inbox

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Statistics on InboxRecyclerView

Number of watchers on Github 1039
Number of open issues 3
Average time to close an issue 9 days
Main language Kotlin
Average time to merge a PR about 7 hours
Open pull requests 0+
Closed pull requests 1+
Last commit 12 months ago
Repo Created about 1 year ago
Repo Last Updated 11 months ago
Size 8.33 MB
Organization / Authorsaket
Latest Releasev1.0.0-rc1
Page Updated
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InboxRecyclerView is a library for building expandable descendant navigation, inspired by Google Inbox and Reply. If you're interested in learning how it was created, here's a detailed blog post.

implementation 'me.saket:inboxrecyclerview:1.0.0-rc1'

FYI, InboxRecyclerView has a dependency on androidx. If you haven't migrated from the support library already, this would be a good opportunity.


InboxRecyclerView can be dropped in existing projects without requiring any effort. You can take a look at the sample app for best practices or download its APK for trying it out on your phone.


  android:layout_height="match_parent" />

  This is where your expandable content will be present. One
  way of using it would be to add a Fragment inside the layout
  and update it when any list item is clicked.

  It's recommended that the content page has a higher z-index
  than the list. This can be achieved by either giving it a
  higher view position or a higher elevation.
  android:layout_height="match_parent" />

Expanding content


recyclerViewAdapter.itemClickListener = { clickedItem ->

How do I

Pull collapsible activities

To maintain consistency across the whole app, this library also includes a PullCollapsibleActivity that brings the same animations and gesture to activities with little effort.

Step 1. Extend PullCollapsibleActivity.

Step 2. Add these attributes to the activitys theme:

<item name=android:windowIsTranslucent>true</item>
<item name=android:colorBackgroundCacheHint>@null</item>


Copyright 2018 Saket Narayan.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.
InboxRecyclerView open issues Ask a question     (View All Issues)
  • about 1 year Strange animation
  • about 1 year Support nested scrolling in ExpandablePageLayout
  • about 1 year RelativeLayout???
InboxRecyclerView list of languages used
InboxRecyclerView latest release notes
v1.0.0-rc1 v1.0.0-rc1

This is a major release and I'm fairly confident that InboxRecyclerView is now ready for stable consumption.

  • Fixed a bug that was causing item change animations to get canceled immediately (354e5c1)
  • Fixed two memory leaks with InboxRecyclerView and ExpandablePageLayout. (f3ca4b0, 0b80ec6)
  • Exposed companion functions in ItemExpandAnimator and TintPainter as Java static functions (b8329fb)
v1.0.0-beta3 v1.0.0-beta3
  • Fixed a bug that was causing InboxRecyclerView items to stay focused even their content had collapsed
v1.0.0-beta2 v1.0.0-beta2
  • Removed the restriction for positioning ExpandablePageLayout at a higher z-index than InboxRecyclerView
  • Set up publishing of javadocs and sources. Thanks @hzsweers!
  • Specified the dependency on androidx explicitly in readme
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