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android / platform / frameworks / support / 9e4a240c57256320a813351c98ce7d0e221dc971
commit9e4a240c57256320a813351c98ce7d0e221dc971[log] [tgz]
authorJohn Nichol <jnichol@google.com>Fri Nov 25 18:07:26 2022 +0000
committerJohn Nichol <jnichol@google.com>Mon Nov 28 11:35:51 2022 +0000
treeb929e40c008c9f2ab18b70a6191f3bdca3b160c4
parenta6e5f7d53302db2ecf07b3ccddc4d881c03d7e90 [diff]
ScalingLazyColumn - Estimate autoCentering topPadding when the contents are empty

When we have a ScalingLazyColumn that is created with no list items we currently do not calculate the size of the top autocentering padding. As a result when list items are then added there is a frame or two when the added items will appear at the top of the screen while the top Spacers size is calculated with a derived state calculation. This results in a frame or two where the content appears in the wrong place until to spacer is inflated and the contents can now be drawn at the center of the screen. This change calculates the amount of top padding needed by assuming an initial item of height 0.dp. For ScalingLazyListAnchorType.ItemStart this will calculate the correct top padding, for ScalingLazyListAnchorType.ItemCenter this calculation will be incorrect as the height of the items is needed to correctly size the contents.

Bug: 260406822
Test: ./gradlew :wear:compose:compose-material:connectedCheck --info --daemon
Change-Id: I239a415ab2e2427c94d4c23ee74711095b53c309
2 files changed
tree: b929e40c008c9f2ab18b70a6191f3bdca3b160c4
  1. .github/
  2. .idea/
  3. activity/
  4. ads/
  5. annotation/
  6. appactions/
  7. appcompat/
  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-kmp/
  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. frameworks/
  49. glance/
  50. gradle/
  51. graphics/
  52. gridlayout/
  53. health/
  54. heifwriter/
  55. hilt/
  56. input/
  57. inspection/
  58. interpolator/
  59. javascriptengine/
  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. samples/
  85. savedstate/
  86. security/
  87. sharetarget/
  88. slice/
  89. slidingpanelayout/
  90. sqlite/
  91. startup/
  92. swiperefreshlayout/
  93. test/
  94. testutils/
  95. text/
  96. tracing/
  97. transition/
  98. tv/
  99. tvprovider/
  100. vectordrawable/
  101. versionedparcelable/
  102. viewpager/
  103. viewpager2/
  104. wear/
  105. webkit/
  106. window/
  107. work/
  108. .gitignore
  109. .mailmap
  110. build.gradle
  111. cleanBuild.sh
  112. code-review.md
  113. CONTRIBUTING.md
  114. gradle.properties
  115. gradlew
  116. libraryversions.toml
  117. LICENSE.txt
  118. OWNERS
  119. PREUPLOAD.cfg
  120. README.md
  121. settings.gradle
  122. studiow
  123. 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.

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