Summary: At the moment the `ListView.js` `_childFrames` variable is only updated on scroll. As a consequence, `onChangeVisibleRows` won't get triggered for the initial render, nor any future render not trigered by scroll events. To fix this we need to make sure native and JS have the child frames in sync.
Summary:
The `ScrollView` sends important `updatedChildFrames` data to the `ListView` to be able to implement `onChangeVisibleRows` method. Coalescing operates very strongly on older devices like the iPhone 4s where this data is then lost.
Fixes#1782.
`ListView` has a method called `onChangeVisibleRows` that is called whenever the rows visible on screen change. This method is critical to be able to implement deletion/creation of views and hence be conservative in memory usage. I have an infinite scrolling view which uses this method to only render the full rows for what is visible on screen and put placeholders for everything else.
In the `RCTEventDispatcher`, we [coalesce events](522fd33d6f/React/Base/RCTEventDispatcher.m (L135-L152)) that are meant to be sent across the bridge. They are [dequeued](522fd33d6f/React/Base/RCTEventDispatcher.m (L180-L188)) on each
Closes https://github.com/facebook/react-native/pull/1783
Github Author: Param Aggarwal <paramaggarwal@gmail.com>
Summary:
In some case, it is very useful to have `velocity` and `targetContentOffset` parameters for `ScrollEndDrag` event. I just added them.
Closes https://github.com/facebook/react-native/pull/1500
Github Author: =?UTF-8?q?=E6=AD=A3=E9=9C=96?= <zhenglin.lzl@alibaba-inc.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
Summary:
@public
I've increased the warning levels in the OSS frameworks, which caught a bunch of minor issues. I also fixed some new errors in Xcode 7 relating to designated initializers and TLS security.
Test Plan:
* Test the sample apps and make sure they still work.
* Run tests.
Summary:
As per discussion with @nicklockwood in #875, make `RCTScrollView` check its sticky headers for hitTests first.
Closes https://github.com/facebook/react-native/pull/1415
Github Author: Brent Vatne <brent.vatne@madriska.com>
Test Plan:
Have a sticky header in a ScrollView with a Touchable onPress action, scroll a bit after it docks and try tapping, should respond to tap.
Summary:
We need to unset `clipsToBounds` on both the wrapper and the inner custom
scroll view
@public
Test Plan:
`overflow: 'visible'` actually shows content outside the `ScrollView`
(e.g. for full-bleed horizontal scrollers/carousels). It doesn't pick up
touches though, which is a wider issue.
Zack Gomez
Martín Bigio
Param Aggarwal
=?UTF-8?q?=E6=AD=A3=E9=9C=96?=
Nick Lockwood
Tadeu Zagallo
Brent Vatne
Spencer Ahrens
Marek Cirkos