commit | 4c5e22d736ff19351f4318a85e94c6d94c5f15b6 | [log] [tgz] |
---|---|---|
author | Dake Gu <dake@google.com> | Fri May 19 13:58:35 2017 -0700 |
committer | Dake Gu <dake@google.com> | Wed May 24 14:22:15 2017 -0700 |
tree | e5eb0f7015bb593a0f6b0f41c6122e078cd1dcfa | |
parent | 256f04c1030b615ef3a97520a6ae80d33fc83678 [diff] |
RecyclerView: add APIs to query Scroller progress On TV, leanback LayoutManager scroll to focused item, aligning the item to a dedicated location on screen. If during scroll animation, there is a layout pass that changes child size, the scroll animation might stop at unaligned position. To avoid this: check if new aligned position will be unchanged, LayoutManager can continue the current scroll animation; otherwise LayoutManager either starts a new Scroller animation or compensates for the scroll delta. Previously Leanback does a hacky way to figure out remaining distance of Scroller animation. This CL exposed the APIs to query the remaining distance in Scroller animation. It applies to the case of fling, smoothScrollTo, smoothScroller. App should only call the methods when scroll state is SETTLING. Bug: 38459310 Test: testRemainingScrollInLayout Change-Id: I0e6587ac6311a28f6e54bb52371c25e2828d4812
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Follow the “Downloading the Source” guide to install and set up repo
tool, but instead of running the listed repo
commands to initialize the repository, run the folowing:
repo init -u https://android.googlesource.com/platform/manifest -b ub-supportlib-master
Now your repository is set to pull only what you need for building and running support library. Download the code (and grab a coffee while we pull down 7GB):
repo sync -j8 -c
You will use this command to sync your checkout in the future - it’s similar to git fetch
Open path/to/checkout/frameworks/support/
in Android Studio. Now you're ready edit, run, and test!
If you get “Unregistered VCS root detected” click “Add root” to enable git integration for Android Studio.
If you see any warnings (red underlines) run Build > Clean Project
.
You can do most of your work from Android Studio, however you can also build the full support library from command line:
cd path/to/checkout/frameworks/support/ ./gradlew createArchive
Run FooBarTest
Run android.support.foobar
Support library has a set of Android applications that exercise support library code. These applications can be useful when you want to debug a real running application, or reproduce a problem interactively, before writing test code.
These applications are named support-*-demos (e.g. support-4v-demos or support-leanback-demos. You can run them by clicking Run > Run ...
and choosing the desired application.
cd path/to/checkout/frameworks/support/ repo start my_branch_name . (make needed modifications) git commit -a repo upload --current-branch .
If you see the following prompt, choose always
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