Summary:
We are currently iterating through each view manager to get its class name to pass to JS. JS uses this list to define lazy property accesses for each view manager to grab the constants synchronously. This results in each view manager's class loading immediately -- causing a small perf hit.
Let's avoid this view managers list entirely. JS is able to access each view manager directly by calling getConstantsForViewManager(name)
Reviewed By: TheSavior
Differential Revision: D9930713
fbshipit-source-id: 4aa013f8398d4f51b7eef07937d2977ba1950726
Summary: Replaced each view manager access with a getViewManager() function call. This will later be used to lazily load view manager classes by allowing java to avoid sending the entire list of view managers to JS.
Reviewed By: QueryConnectionException
Differential Revision: D9695788
fbshipit-source-id: 949858aa2f0b0b00b68e260461ba8f1d085cf07f
Summary: This change drops the year from the copyright headers and the LICENSE file.
Reviewed By: yungsters
Differential Revision: D9727774
fbshipit-source-id: df4fc1e4390733fe774b1a160dd41b4a3d83302a
Summary:
- Differentiate when the constants are coming from lazy view managers or not
- Add systrace sections to each reactpackage iteration for lazy view managers
Differential Revision: D9664719
fbshipit-source-id: 3b8c6b3b40667a833471fcb957367501781b0f5d
Summary:
Includes React Native and its dependencies Fresco, Metro, and Yoga. Excludes samples/examples/docs.
find: ^(?:( *)|( *(?:[\*~#]|::))( )? *)?Copyright (?:\(c\) )?(\d{4})\b.+Facebook[\s\S]+?BSD[\s\S]+?(?:this source tree|the same directory)\.$
replace: $1$2$3Copyright (c) $4-present, Facebook, Inc.\n$2\n$1$2$3This source code is licensed under the MIT license found in the\n$1$2$3LICENSE file in the root directory of this source tree.
Reviewed By: TheSavior, yungsters
Differential Revision: D7007050
fbshipit-source-id: 37dd6bf0ffec0923bfc99c260bb330683f35553e
Summary:
The `UIManager` already has a lot of responsibilities and is deeply
tied with React Native's view architecture. This diff separates out a
`DeviceInfo` native module to provide information about screen dimensions and
font scale, etc.
Reviewed By: fkgozali
Differential Revision: D4713834
fbshipit-source-id: f2ee93acf876a4221c29a8c731f5abeffbb97974
Summary:
The PR description has been updated to reflect the new approach.
**Breaking Change Summary**
On Android, the following properties now return a different number:
- `Dimensions.get('window').fontScale`
- `Dimensions.get('screen').fontScale`
- `PixelRatio.getFontScale()`
This is a breaking change to anyone who was using these properties because the meaning of these properties has now changed.
These properties used to return a value representing font scale times density ([`DisplayMetrics.scaledDensity`](https://developer.android.com/reference/android/util/DisplayMetrics.html#scaledDensity)). Now they return a value representing just font scale ([`Configuration.fontScale`](https://developer.android.com/reference/android/content/res/Configuration.html#fontScale)).
**PR Description**
This PR changes a few things:
- Correctly exposes the font scale to JavaScript as `Dimensions.get('screen').fontScale`. UIManager was exporting `DisplayMetrics.scaledDensity` under the name `fontScale`. How
Closes https://github.com/facebook/react-native/pull/11008
Differential Revision: D4558207
Pulled By: astreet
fbshipit-source-id: 096ce7b28051325dfd45fdb2a14b5e9b7d3bc46f
Summary:
public
KeyboardListener needs DisplayMetrics to be initialized when it is attached. At
the moment, this breaks easily whenever we change these components, since DisplayMetrics are intialized
in a module and KeyboardListener is created eagerly in ReactRootView, whereas
ReactRootView can exist without the instance.
This changes to create DisplayMetrics as soon as possible, when the react
instance is built. The KeyboardListener is created and attached after the ReactRootView is
attached to an existing instance, point at which DisplayMetrics have to be
initialized.
Reviewed By: dmmiller
Differential Revision: D2911351
fb-gh-sync-id: 64d1805c5d5b2f6876adb694b565a2df059b381d
Summary: public
We're seeing related crashes. The diff has no tests, the perf tests weren't conclusive, and the person who'd be supporting it no longer is available to work on it. We can try this again later in a less rushed manner with proper perf testing.
Reviewed By: davidaurelio
Differential Revision: D2696615
fb-gh-sync-id: 3b6814ac12af19516146d5c42d2add8321b10db5
Summary: public
Native view recycling implementation based on limited pools of views.
In this diff I introduced new UIManager method: dropViews. Instead of removing views from tag->view maps when they are detached we keep them there until we get a call to dropViews with the appropriate tag. JS may keep a pool of object and selectively decide not to enqueue drop for certain views. Then instead of removing those views it may decide to reuse tag that has been previously allocated for a view that is no longer in use.
Special handling is required for layout-only nodes as they only can transition from layout-only to non-layout-only (reverse transition hasn't been implemented). Because of that we'd loose benefits of view flattening if we decide to recycle existing non-layout-only view as a layout-only one.
This diff provides only a simple and manual method for configuring pools by calling `ReactNativeViewPool.configure` with a dict from native view name to the view count. Note that we may not want recycle all the views (e.g. when we render mapview we don't want to keep it in memory after it's detached)
Reviewed By: davidaurelio
Differential Revision: D2677289
fb-gh-sync-id: 29f44ce5b01db3ec353522af051b6a50924614a2
This is an early release and there are several things that are known
not to work if you're porting your iOS app to Android.
See the Known Issues guide on the website.
We will work with the community to reach platform parity with iOS.
Andrew Chen (Eng)
Héctor Ramos
Sophie Alpert
Dmitry Zakharov
Omri Gindi
Alexey Lang
Brian Vaughn
Ashwin Bharambe
Adam Comella
Aaron Chiu
Andrei Coman
Andy Street
Krzysztof Magiera
Martin Konicek