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fix(android): props 2.0 image tintColor=transparent broken#57668

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fix(android): props 2.0 image tintColor=transparent broken#57668
bartlomiejbloniarz wants to merge 6 commits into
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export-D93140534

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Summary:
When enabling the props 2.0 feature flags I noticed that for an <Image source={...} style={{ tintColor: 'transparent' }} /> the image is actually still showing, instead of becoming transparent.

The underlying issue

All color props are defined as SharedColor, where a SharedColor has a default value of 0:

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/graphics/platform/android/react/renderer/graphics/HostPlatformColor.h#L15-L18

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/graphics/Color.h#L30-L32

Note

This is a bit confusing to me. 0 is not really an "undefined" color, but its actually "transparent". What we are really saying this way is that all color props have a default value of "transparent". The naming makes me unsure whether this has been intentional.

For other use cases, this seems to make sense. Ie. a user expects their text to have a background color of transparent/"nothing". However, we do not expect our image's tint color to have a default color of "transparent". This would hide all our images.

With props 2.0 we use the getDiffProp function, and when we pass tintColor: 'transparent' it will be passed to native as tintColor: 0. When we then compare the passed prop's value vs the default value here, it will not include the tintColor:

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/components/image/ImageProps.cpp#L249-L251

tintColor really is an optional color prop, and should be treated as such. The best fix I found was therefor making it really an std::optional. Let me know if you think otherwise!

Changelog:

[ANDROID] [CHANGED] - ImageProps make tintColor an std::optional to support color transparent (0) with props 2.0

X-link: #55535

Reviewed By: lenaic

Differential Revision: D93140534

Pulled By: bartlomiejbloniarz

Bartlomiej Bloniarz and others added 6 commits July 24, 2026 05:42
Summary:
Adds the `enableMountingCoordinatorPullModelAndroid` experiment flag (default off) that gates the Android pull-model mounting migration. Config entry plus regenerated accessors only — no behavior change.

## Changelog:
[Android] [Added] - Add `enableMountingCoordinatorPullModelAndroid` feature flag

Differential Revision: D112309049
Summary:
Java side of the pull model — dead code until the C++ wiring lands:
- `PullTransactionMountItem`: asks C++ (via `FabricUIManagerBinding.pullAndExecuteTransaction`) to pull the surface's pending transaction and apply it synchronously on the UI thread.
- `FabricUIManager.onTransactionAvailable` (JNI entry): enqueues a `PullTransactionMountItem`.
- `FabricUIManagerBinding.pullAndExecuteTransaction`: extern declaration.

One item is enqueued per notification, mirroring iOS; redundant items no-op in C++.

## Changelog:
[Android] [Added] - Add inert Java plumbing (`PullTransactionMountItem`, `FabricUIManager.onTransactionAvailable`) for the pull model

Differential Revision: D112309050
Summary:
Pull Request resolved: #57579

Makes `enableMountingCoordinatorPullModelAndroid` functional. With the flag on, the commit thread only signals transaction availability and the UI thread pulls and applies at mount time (matching iOS/macOS); with the flag off (default), behavior is byte-for-byte identical.
- `schedulerShouldRenderTransactions`: notifies via JNI (`FabricMountingManager::onTransactionAvailable`) instead of pulling and building the batch.
- `schedulerDidFinishTransaction`: no-op under the pull model.
- `FabricUIManagerBinding::pullAndExecuteTransaction` (new JNI method): pulls the surface's transaction on the UI thread and runs `executeMount`.
- `FabricMountingManager::executeMount`: gains a `synchronous` mode that executes the batch directly on the UI thread.
- The accumulation sites remain gated on `enableAccumulatedUpdatesInRawPropsAndroid`; the pull model requires that flag to be co-enabled, since a pull may collapse several commits into one diff and therefore needs complete accumulated rawProps.

## Changelog:
[Android] [Added] - Wire the pull-model mounting path in C++ behind `enableMountingCoordinatorPullModelAndroid`

Differential Revision: D112309053
Summary:
Robolectric tests for the notification path: a notification pulls synchronously on the UI thread; one pull item is enqueued per notification and dispatched in order (redundant pulls no-op in C++); no binding is a clean no-op. Adds `ShadowFabricUIManagerBinding` and `ShadowPerformanceTracer` shadows.

## Changelog:
[Internal] - Add JVM tests for the Android pull-model plumbing

Differential Revision: D112309051
Summary:
Adds the `enableImageTransparentTintColor` experiment flag (default off) that gates whether a defined transparent Image `tintColor` (alpha 0) is applied as a real tint (rendering the image invisible) or treated as unassigned/untinted. Config entry plus regenerated accessors only — no behavior change.

## Changelog:
[General] [Added] - Add `enableImageTransparentTintColor` feature flag

Differential Revision: D112572558
Summary:
When enabling the props 2.0 feature flags I noticed that for an `<Image source={...} style={{ tintColor: 'transparent' }} />` the image is actually still showing, instead of becoming transparent.

### The underlying issue

All color props are defined as `SharedColor`, where a `SharedColor` has a default value of `0`:

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/graphics/platform/android/react/renderer/graphics/HostPlatformColor.h#L15-L18

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/graphics/Color.h#L30-L32

> [!NOTE]
> This is a bit confusing to me. `0` is not really an "undefined" color, but its actually "transparent". What we are really saying this way is that all color props have a default value of "transparent". The naming makes me unsure whether this has been intentional.

For other use cases, this seems to make sense. Ie. a user expects their text to have a background color of transparent/"nothing". However, we do not expect our image's tint color to have a default color of "transparent". This would hide all our images.

With props 2.0 we use the `getDiffProp` function, and when we pass `tintColor: 'transparent'` it will be passed to native as `tintColor: 0`. When we then compare the passed prop's value vs the default value here, it will not include the `tintColor`:

https://github.com/facebook/react-native/blob/f3678f51d9873cb19602d7e36a4d8ed71562b9d0/packages/react-native/ReactCommon/react/renderer/components/image/ImageProps.cpp#L249-L251

`tintColor` really is an optional color prop, and should be treated as such. The best fix I found was therefor making it really an `std::optional`. Let me know if you think otherwise!

## Changelog:

<!-- Help reviewers and the release process by writing your own changelog entry.

Pick one each for the category and type tags:

[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - Message

For more details, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests
-->

[ANDROID] [CHANGED] - ImageProps make `tintColor` an `std::optional` to support color `transparent` (`0`) with props 2.0

X-link: #55535

Reviewed By: lenaic

Differential Revision: D93140534

Pulled By: bartlomiejbloniarz
@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Jul 24, 2026
@facebook-github-tools facebook-github-tools Bot added p: Software Mansion Partner: Software Mansion Partner p: Facebook Partner: Facebook labels Jul 24, 2026
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meta-codesync Bot commented Jul 24, 2026

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@bartlomiejbloniarz has exported this pull request. If you are a Meta employee, you can view the originating Diff in D93140534.

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