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android / platform / frameworks / support / f0c89e3b95166e4c8a789e415f07a5f8a023ae54
commitf0c89e3b95166e4c8a789e415f07a5f8a023ae54[log] [tgz]
authorYeabkal Wubshit <[email protected]>Tue Jul 11 10:03:51 2023 -0700
committerYeabkal Wubshit <[email protected]>Thu Jul 13 16:00:32 2023 -0700
treeeb5d1ff294479b9017a690a94eedb0160f3f75b9
parent89210832a3eae199fd3d5e932b9e4cf7648479e9 [diff]
Create DifferentialMotionFlingHelper

This class will control fling algorithm for differential motion. It is
designed to be independent of the View it may be used on. Currently,
it's situated under recyclerview/, and is being used by RecyclerView
only. Once we fully implement its details and make RecyclerView use it
to generate real flings, we can finalize the API by pulling it out of
recyclerview/ module (and putting it in some common module like view/),
and making it public, so that other Jetpack widgets can use it. Once the
API has been finalized/made public, we can also enable developers to
inject their own implementation of DifferentialMotionFlingHelper to
widgets to allow custom fling behaviors.

This implementation is currently empty - it just defines the structure
of the class, and makes RecyclerView use it. The algorithm to actually
control fling will be implemented in a follow up, along with unit tests.

Bug: 290680625
Test: N/A
Change-Id: I2c0473af5618fd5a489ead341269021566ce59bf
2 files changed
tree: eb5d1ff294479b9017a690a94eedb0160f3f75b9
  1. .github/
  2. .idea/
  3. activity/
  4. annotation/
  5. appactions/
  6. appcompat/
  7. appintegration/
  8. appsearch/
  9. arch/
  10. asynclayoutinflater/
  11. autofill/
  12. benchmark/
  13. biometric/
  14. bluetooth/
  15. browser/
  16. buildSrc/
  17. buildSrc-tests/
  18. busytown/
  19. camera/
  20. car/
  21. cardview/
  22. collection/
  23. compose/
  24. concurrent/
  25. constraintlayout/
  26. contentpager/
  27. coordinatorlayout/
  28. core/
  29. credentials/
  30. cursoradapter/
  31. customview/
  32. datastore/
  33. development/
  34. docs/
  35. docs-public/
  36. docs-tip-of-tree/
  37. documentfile/
  38. draganddrop/
  39. drawerlayout/
  40. dynamicanimation/
  41. emoji/
  42. emoji2/
  43. enterprise/
  44. exifinterface/
  45. external/
  46. fragment/
  47. frameworks/
  48. glance/
  49. gradle/
  50. graphics/
  51. gridlayout/
  52. health/
  53. heifwriter/
  54. hilt/
  55. input/
  56. inspection/
  57. interpolator/
  58. javascriptengine/
  59. kruth/
  60. leanback/
  61. lifecycle/
  62. lint-checks/
  63. loader/
  64. media/
  65. media2/
  66. mediarouter/
  67. metrics/
  68. navigation/
  69. paging/
  70. palette/
  71. percentlayout/
  72. placeholder/
  73. placeholder-tests/
  74. playground-common/
  75. preference/
  76. print/
  77. privacysandbox/
  78. profileinstaller/
  79. recommendation/
  80. recyclerview/
  81. remotecallback/
  82. resourceinspection/
  83. room/
  84. safeparcel/
  85. samples/
  86. savedstate/
  87. security/
  88. sharetarget/
  89. slice/
  90. slidingpanelayout/
  91. sqlite/
  92. stableaidl/
  93. startup/
  94. swiperefreshlayout/
  95. test/
  96. testutils/
  97. text/
  98. tracing/
  99. transition/
  100. tv/
  101. tvprovider/
  102. vectordrawable/
  103. versionedparcelable/
  104. viewpager/
  105. viewpager2/
  106. wear/
  107. webkit/
  108. window/
  109. work/
  110. .gitignore
  111. .mailmap
  112. build.gradle
  113. cleanBuild.sh
  114. code-review.md
  115. CONTRIBUTING.md
  116. gradle.properties
  117. gradlew
  118. libraryversions.toml
  119. LICENSE.txt
  120. OWNERS
  121. PREUPLOAD.cfg
  122. README.md
  123. settings.gradle
  124. studiow
  125. TEXT_OWNERS
README.md

Android Jetpack

Revved up by Gradle Enterprise

Jetpack is a suite of libraries, tools, and guidance to help developers write high-quality apps easier. These components help you follow best practices, free you from writing boilerplate code, and simplify complex tasks, so you can focus on the code you care about.

Jetpack comprises the androidx.* package libraries, unbundled from the platform APIs. This means that it offers backward compatibility and is updated more frequently than the Android platform, making sure you always have access to the latest and greatest versions of the Jetpack components.

Our official AARs and JARs binaries are distributed through Google Maven.

You can learn more about using it from Android Jetpack landing page.

Contribution Guide

For contributions via GitHub, see the GitHub Contribution Guide.

Note: The contributions workflow via GitHub is currently experimental - only contributions to the following projects are being accepted at this time:

Code Review Etiquette

When contributing to Jetpack, follow the code review etiquette.

Accepted Types of Contributions

  • Bug fixes - needs a corresponding bug report in the Android Issue Tracker
  • Each bug fix is expected to come with tests
  • Fixing spelling errors
  • Updating documentation
  • Adding new tests to the area that is not currently covered by tests
  • New features to existing libraries if the feature request bug has been approved by an AndroidX team member.

We are not currently accepting new modules.

Checking Out the Code

Head over to the onboarding docs to learn more about getting set up and the development workflow!

Continuous integration

Our continuous integration system builds all in progress (and potentially unstable) libraries as new changes are merged. You can manually download these AARs and JARs for your experimentation.

Password and Contributor Agreement before making a change

Before uploading your first contribution, you will need setup a password and agree to the contribution agreement:

Generate a HTTPS password: https://android-review.googlesource.com/new-password

Agree to the Google Contributor Licenses Agreement: https://android-review.googlesource.com/settings/new-agreement

Getting reviewed

  • After you run repo upload, open r.android.com
  • Sign in into your account (or create one if you do not have one yet)
  • Add an appropriate reviewer (use git log to find who did most modifications on the file you are fixing or check the OWNERS file in the project's directory)

Handling binary dependencies

AndroidX uses git to store all the binary Gradle dependencies. They are stored in prebuilts/androidx/internal and prebuilts/androidx/external directories in your checkout. All the dependencies in these directories are also available from google(), or mavenCentral(). We store copies of these dependencies to have hermetic builds. You can pull in a new dependency using our importMaven tool.