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android / platform / frameworks / support / 742087ac7ad6724fc0fae9f7209843aeea1b7ad2
commit742087ac7ad6724fc0fae9f7209843aeea1b7ad2[log] [tgz]
authorAndrey Kulikov <andreykulikov@google.com>Mon Jan 27 06:10:25 2025 -0800
committerAndroid Build Coastguard Worker <android-build-coastguard-worker@google.com>Wed Apr 30 20:56:34 2025 -0700
tree5d3a67b092eabbb04f7cc03c44160d6685182568
parent3b9bb94330d7f5f8e4f240d4ab923c8e3f9b02b8 [diff]
Skip remeasure requests for precomposed items

When we do precomposition we add a subtree as a non placed child of SubcomposeLayout. Before those changes it was possible for this tree to be measured as part of the regular remeasure logic, as we weren't properly skipping remeasure requests from non placed items, which can't affect the placed (and visible) tree. It was a performance issue as well, as the idea of prefetch to do all the work outside of the main frame, we want to do measurement separately when we have enough free time, not during the main frame blocking the rest of the ui thread job needed to prepare the next frame.

Test: new tests in SubcomposeLayoutTest
Fixes: 371012732
(cherry picked from https://android-review.googlesource.com/q/commit:bb3785ddf9dd9576562d970d5016c07cdc35ff87)
Merged-In: Ifd9f96592b33be02338064da01a4f6b523cfe41b
Change-Id: Ifd9f96592b33be02338064da01a4f6b523cfe41b
3 files changed
tree: 5d3a67b092eabbb04f7cc03c44160d6685182568
  1. .github/
  2. .idea/
  3. activity/
  4. annotation/
  5. appcompat/
  6. appfunctions/
  7. appintegration/
  8. appsearch/
  9. arch/
  10. asynclayoutinflater/
  11. autofill/
  12. benchmark/
  13. binarycompatibilityvalidator/
  14. biometric/
  15. bluetooth/
  16. browser/
  17. buildSrc/
  18. buildSrc-tests/
  19. busytown/
  20. camera/
  21. car/
  22. cardview/
  23. collection/
  24. compose/
  25. concurrent/
  26. constraintlayout/
  27. contentpager/
  28. coordinatorlayout/
  29. core/
  30. credentials/
  31. cursoradapter/
  32. customview/
  33. datastore/
  34. development/
  35. docs/
  36. docs-public/
  37. docs-tip-of-tree/
  38. documentfile/
  39. draganddrop/
  40. drawerlayout/
  41. dynamicanimation/
  42. emoji/
  43. emoji2/
  44. enterprise/
  45. exifinterface/
  46. external/
  47. fragment/
  48. glance/
  49. gradle/
  50. graphics/
  51. gridlayout/
  52. health/
  53. heifwriter/
  54. hilt/
  55. ink/
  56. input/
  57. inspection/
  58. interpolator/
  59. javascriptengine/
  60. kruth/
  61. leanback/
  62. lifecycle/
  63. lint/
  64. lint-checks/
  65. loader/
  66. media/
  67. mediarouter/
  68. metrics/
  69. navigation/
  70. navigation3/
  71. paging/
  72. palette/
  73. pdf/
  74. percentlayout/
  75. performance/
  76. placeholder/
  77. placeholder-tests/
  78. playground-common/
  79. playground-projects/
  80. preference/
  81. print/
  82. privacysandbox/
  83. profileinstaller/
  84. recommendation/
  85. recyclerview/
  86. remotecallback/
  87. resourceinspection/
  88. room/
  89. safeparcel/
  90. samples/
  91. savedstate/
  92. security/
  93. sharetarget/
  94. slidingpanelayout/
  95. sqlite/
  96. stableaidl/
  97. startup/
  98. swiperefreshlayout/
  99. test/
  100. testutils/
  101. tracing/
  102. transition/
  103. tv/
  104. tvprovider/
  105. vectordrawable/
  106. versionedparcelable/
  107. viewpager/
  108. viewpager2/
  109. wear/
  110. webkit/
  111. window/
  112. work/
  113. xr/
  114. .gitignore
  115. build.gradle
  116. cleanBuild.sh
  117. code-review.md
  118. CONTRIBUTING.md
  119. gradle.properties
  120. gradlew
  121. libraryversions.toml
  122. license-baseline.txt
  123. LICENSE.txt
  124. OWNERS
  125. PREUPLOAD.cfg
  126. README.md
  127. settings.gradle
  128. studiow
  129. TEXT_OWNERS
README.md

Android Jetpack

Revved up by Develocity

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!

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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.

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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.