Summary: public
We have code in place to ensure that a red box is displayed when bad arguments are sent to exported methods, however the methods were still being called with nil values for those arguments, resulting in crashes if the method wasn't set up to handle nil gracefully.
This diff ensures that methods will not be called if any of the argument conversion functions log an error. It also explicitly checks for nil output for arguments that are marked as nonnull.
Reviewed By: javache, tadeuzagallo
Differential Revision: D2580658
fb-gh-sync-id: aad6be758ea19f9b4521f3f9f0407bf672c0a2dd
Summary: This addresses #3577 and #3533. It adds the ability to test for subview.clipsToBounds.
Closes https://github.com/facebook/react-native/pull/3750
Reviewed By: svcscm
Differential Revision: D2592878
Pulled By: nicklockwood
fb-gh-sync-id: a87842b87dc0b455120e6007059b5d9a51a53ea2
Summary: added a new property named 'disable' to SliderIOS
this property prevents the user from being able to slide the slider
Closes https://github.com/facebook/react-native/pull/3730
Reviewed By: svcscm
Differential Revision: D2590154
Pulled By: javache
fb-gh-sync-id: b8a9c82c1b05eb813d9b81180cb1083b3f1852ac
Summary: public
`%xmm` registers weren't being preserved what would cause eventual weird issues
for methods using floats / doubles / etc.
Reviewed By: jspahrsummers
Differential Revision: D2581358
fb-gh-sync-id: 701498def0f05716c665f4749e5154b828bf41ec
Summary: public
I was using `dlsym` as a more elegant way of checking if the function was defined
to prevent crashes if running on an unsupported architecture, but Xcode might
strip the symbol, even with `.no_dead_strip`, if there's no references to the
compilation unit at all.
Replace it with an ugly `#if` that checks if it's any of the supported targets
and extern the function prototype.
Reviewed By: jspahrsummers
Differential Revision: D2581143
fb-gh-sync-id: b004ed351de97f96c04b4a6c914ce55cfcbbbcbb
Summary: There is no point in dispatching to main thread if there is nothing to do there.
This place gets called basically any time a repeating js timer fires, which doesn't imply UI changes (although usually that's why people setup timers).
Combined with previous diffs that makes us not generate empty blocks (nil instead), this could be minor perf win in some rare cases.
This also changes semantic of `reactBridgeDidFinishTransaction` call a bit. Previously it was done no matter if UI has changed or not.
I think it should be safe, since seems like callees really care only about views being laid out.
Depends on D2571166. (not strictly speaking)
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2571188
fb-gh-sync-id: 02d52e4615475072c3c27226e67c431a667ec990
Summary: Same as in previous diffs. Gets us into a better place to know if we really have UI updates and it's marginally more efficient.
Depends on D2571143. (not really)
public
Reviewed By: nicklockwood
Differential Revision: D2571166
fb-gh-sync-id: e8f34521ec2e12156a49f1cd655e92df1db34fca
Summary: Previously `_bridgeTransactionListeners` were informed about `reactBridgeDidFinishTransaction` inside of one of the UI blocks.
That seems pretty arbitrary, doesn't really mean a "transaction" is really over (assuming transaction means all UI updates) and even when that block does nothing we still need to call these listeners, since there could be other UI blocks generated somewhere else!
So I've moved this call to a place that seemed better (=after all UI blocks are done), since all listeners are interested in knowing when layout has happened.
public
Reviewed By: nicklockwood
Differential Revision: D2571122
fb-gh-sync-id: 62be03ebc4353d6f6318c9765079b87b07483be2
Summary: public
The dev mode override feature was built with the assumption that bunlded JS would be minified, and broke with unminified JS. This fixes that by using a more robust regex-based search.
Reviewed By: tadeuzagallo
Differential Revision: D2581240
fb-gh-sync-id: 4d4b45eb8573ceb956b7259550d80a9807f83d59
Summary: public
Rename the dev menu button and add comments to the private method
used.
Reviewed By: ndfred
Differential Revision: D2576599
fb-gh-sync-id: cd5cde7562dcbc243663ac68d2b9cac5c0a984ab
Summary: We have a use case in the development of our app, where we are rendering some HTML content in a web view. But this content comes from the back end, and varies in height. There are other components on the page, so it's not a full screen web view. We need to dynamically alter the web view height, to fit the HTML content without scrolling, and to push the non-web view content on the screen down.
The solution I came up with, was to use the _loadingFinish callback, to send the evaluation of the injectedJavaScript property back to the React Native side. In my example above, injecting 'document.getElement(elementId).offsetHeight' evaluates to the height of the element, with margins and borders applied, and once returned to the RN app, it can change the app state and cause the web view height to be adjusted.
Closes https://github.com/facebook/react-native/pull/2753
Reviewed By: svcscm
Differential Revision: D2578688
Pulled By: mkonicek
fb-gh-sync-id: fc9c0d0f84994a409e037016a555534549f8957a
Summary: public
Kill `RCTPerfStats` and introduce the new `RCTPerfMonitor`, including memory
usage, JSC heap size, number of RN views in screen, FPS (both on UI and JS threads)
and more to come.
It removes all the previous traces that were previous spread across the bridge
and the dev menu and moves everything to be more contained, so the whole thing
can be safely striped in production.
Reviewed By: nicklockwood
Differential Revision: D2575158
fb-gh-sync-id: 6a6d0c4422adbddeeefddd32ec3409a7095ff2a9
Summary: public
Use arrays instead of dictionaries for encoding module method information.
This further reduces UIExplorer startup JSON from 16104 bytes to 14119 (12% reduction)
Reviewed By: javache
Differential Revision: D2570057
fb-gh-sync-id: 4a53a9ead4365a136e7caeb650375733e1c24c0e
Summary: public
This has been broken for a while. The styles in the JS were being set on the container instead of the activity view itself.
Also, due to the way frames were set directly on layer properties instead of the view, resizing didn't work properly because the UIImageView inside the UIActivityView was not being realligned when the bounds changed. This also caused problems for other controls such as maps, where it was fixed with a method override, but the simpler solution is just to set the view center and bounds directly.
Before: {F23631143}
After: {F23631144}
Reviewed By: javache, tadeuzagallo
Differential Revision: D2575156
fb-gh-sync-id: e82e56d36648e7c924df77da1750e03037b5d5be
Summary: public
We're sending a lot of module config data when the app first starts, and much of this is redundant.
UIExplorer current sends 19061 bytes of module config JSON. This diff reduces that to 16104 (15% saving) by stripping modules that have no methods or constants, and removing method types unless method is async.
Reviewed By: tadeuzagallo, javache
Differential Revision: D2570010
fb-gh-sync-id: 8c0abbd1cdee3264b37a4f52e852008caaffb9c5
Summary: public
Fixes#2527
We were re-using the same invocation for every module's method, but calling
`[NSInvocation retainArguments]`, so the arguments would never be released.
Reviewed By: nicklockwood
Differential Revision: D2559997
fb-gh-sync-id: eafa3b3517c7cab3539954e26e250f7f668eee50
Summary: public
The profiler overrides all the methods of all the BridgeModules, and in order to
`start` and `end` the profiler at the function invocation time it used `NSInvocation`,
which is slow.
Replace it with a simple assembly method based on `objc_msgSend`.
Reviewed By: jspahrsummers
Differential Revision: D2550807
fb-gh-sync-id: 88ca08f9d6bfcd3035bda9304c93566c8818b46f
Summary: public
Implement the iOS side of the optmisation previously implemented in android
(D2485402)
Depends on D2540746
Reviewed By: javache
Differential Revision: D2541118
fb-gh-sync-id: f3590600a6defa2da75c5b7b2cced6ad8bfea6cb
Summary: The Obj-C API is usually easier to work with, and also makes it very easy to use the C API when necessary (performance, for example). This diff just switches the designated initializer of RCTContextExecutor to take a JSContext instead of JSGlobalContextRef, but the old initializer still works if needed.
I was doing some memory leak investigation and it is easier with ARC so I wanted to incrementally move the executor to Obj-C.
Closes https://github.com/facebook/react-native/pull/2159
Reviewed By: svcscm
Differential Revision: D2554890
Pulled By: tadeuzagallo
fb-gh-sync-id: 75b96d04cddff68fa3daf5d0fafdffad21dae307
Summary: While we shouldn't invoke `bridge.devMenu` in production, doing it will result into a crash.
1. `devMenu` internally calls `RCTBridgeModuleNameForClass([RCTDevMenu class])`
2. `RCTBridgeModuleNameForClass()` calls `moduleName`
3. In the release code `RCTDevMenu` doesn't export the `moduleName` class method.
Closes https://github.com/facebook/react-native/pull/2910
Reviewed By: svcscm
Differential Revision: D2550797
Pulled By: tadeuzagallo
fb-gh-sync-id: 5dfbf905e5a02d9fd3b52f8b3d6eefc4e3ff30b2
Summary: public
Benchmarking our startup path has shown we spend a lot of time decoding strings (iPhone 4S / iPhone 5):
* reading a 2MB JS bundle: 35ms / 15ms
* decoding is to an `NSString`: 186ms / 78ms
* transforming that to a `JSString`: 29ms / 10ms
Instead of going through an `NSString` transformation, we generate a null-terminated bundle (0.1ms / 0.05ms to copy the data) and use `JSStringCreateWithUTF8CString` (121ms / 53ms) to generate the string. That makes decoding 70% faster.
Reviewed By: javache
Differential Revision: D2541140
fb-gh-sync-id: 09a016b8edfd46a9b62682c76705564d2024e75e
Summary: @public
When de-batching the calls from native -> JS, some calls were being dispatched
before the bridge had finished loading, which would cause lost calls when running
on the `ContextExecutor` and redbox when running in the Chrome debugger
Reviewed By: @javache
Differential Revision: D2540746
fb-gh-sync-id: ece29406648d3cbcb42cef3b32b8774ff0c15fd8
Summary: @public
Take a step back and de-batch the bridge calls so we can have better profiling data and a better starting point to work on future optimisations. Also gave a 10~15% win on first render.
Reviewed By: @javache
Differential Revision: D2493674
fb-gh-sync-id: 05165fdd00645bdf43e844bb0c4300a2f63e7038
Summary: @public
This diff unifies the logic for detecting when images refer to XCAsset files into a single function (RCTXCAssetNameForURL) and uses it for both +[RCTConvert UIImage:] and RCTImageLoader.
I've also tightened the definition of XCAssets so that it only applies to images inside .car files, not any image inside the main bundle. This avoids using the +[UIImage imageNamed:] when not strictly necessary, which is desirable since that method is not thread-safe, and has undocumented caching behavior that is difficult to reason about.
Reviewed By: @javache
Differential Revision: D2526400
fb-gh-sync-id: 7199c2a44f1d55ff236d2c38a0a9368739b993d5
Summary: @public
RCTJavaScriptLoader was using an NSURLSessionDataTask to load local bundle.js files. While this works, it was non-optimal from a performance point of view.
Reviewed By: @tadeuzagallo
Differential Revision: D2522598
fb-gh-sync-id: b32981b3be4c336512d1462d3f4943b5aad34ae0
Summary: @public
This diff implements inline image support for <Text> nodes. Images are specified using <Image> tags, however all properties of the image are currently ignored apart from the source (including width/height styles).
Images are loaded asyncronously, and will trigger a text re-layout when they have loaded.
Reviewed By: @javache
Differential Revision: D2507725
fb-gh-sync-id: 59d0696d00a1bc531915cc35242a16b2dec96e85
Summary: When you reload and create a new bridge, one of the things that happens during setup is that the RCTAccessibilityManager fires a notification. The old bridge would receive this notification from the new bridge's RCTAccessibilityManager, which we don't want, especially because the two are running on different shadow queues.
I believe this led to a gnarly crash in NSConcreteTextStorage because RCTMeasure in RCTShadowText.m was getting called for the old RCTText (getting destroyed) from a notification fired from the new shadow queue. The fix is for the UIManager to handle notifications only from its bridge's RCTAccessibilityManager. See #2001 for the kinds of crashes we were seeing.
Closes https://github.com/facebook/react-native/pull/3279
Reviewed By: @svcscm
Differential Revision: D2521652
Pulled By: @nicklockwood
fb-gh-sync-id: a4ffe3ef8304667727e573e2a2e8b716e1d2f3e1
Summary: @public
The RCTDevMenu always calls the handler, even with the state hasn't changed.
Guard against it.
Reviewed By: @javache
Differential Revision: D2499034
Summary: @public
Fix analyser error on RCTConvert where a key used to subscript an
NSMutableDictionary could possibly be nil.
Reviewed By: @alexeylang, @jspahrsummers
Differential Revision: D2498988
Summary: This function was declared, but never defined, so calling it would crash your application.
I also took this opportunity to ensure that the logging threshold is given a default value upon initialization, not just the first time `RCTGetLogThreshold()` is called.
@public
Reviewed By: @tadeuzagallo
Differential Revision: D2475622
Summary: We had a layout issue in Ads Manager after updating to the latest version of css-layout on react-native. I bisected the change to 909c14117f. It changes the condition and breaks the behavior that we had. This change was not covered by a unit test so I added one.
Closes https://github.com/facebook/css-layout/pull/131
Reviewed By: @svcscm
Differential Revision: D2476924
Pulled By: @vjeux
Summary: This API is defined only on iOS 8 and newer. There is a warning that the function is defined when checking if it exists since it is always defined in the iOS 8 SDK but not necessarily on iOS 7 phones. Use pragmas to silence the warning.
Closes https://github.com/facebook/react-native/pull/2475
Reviewed By: @trunkagent, @vjeux
Differential Revision: D2443432
Pulled By: @tadeuzagallo
Summary: I noticed that sometimes the batched bridge would be valid before `[self enqueueApplicationScript:url:onComplete:]` but then become invalid in the completion callback. This diff checks `self.isValid` inside of the callback.
Closes https://github.com/facebook/react-native/pull/2016
Reviewed By: @trunkagent, @jspahrsummers
Differential Revision: D2443438
Pulled By: @tadeuzagallo
Summary: This adds workarounds for the code that was preventing React from compiling when linked against an iOS App Extension target.
Some iOS APIs are unavailable to App Extensions, and Xcode's static analysis will catch attempts to use methods that have been flagged as unavailable.
React currently uses two APIs that are off limits to extensions: `[UIApplication sharedApplication]` and `[UIAlertView initWith ...]`.
This commit adds a helper function to `RCTUtils.[hm]` called `RCTRunningInAppExtension()`, which returns `YES` if, at runtime, it can be determined that we're running in an app extension (by checking whether the path to `[NSBundle mainBundle]` has the `"appex"` path extension).
It also adds a `RCTSharedApplication()` function, which will return `nil` if running in an App Extension. If running in an App, `RCTSharedApplication()` calls `sharedApplication` by calling `performSelector:` on the `UIApplication` class. This passes the static analysis check, and, in my opinion, obeys the "spirit of th
Closes https://github.com/facebook/react-native/pull/1895
Reviewed By: @svcscm
Differential Revision: D2224128
Pulled By: @nicklockwood
Summary: - Includes the error cookie with soft exceptions as well since they too can be updated (requires tiny Android change too)
- Passes the error cookie through instead of leaving it unused
Closes https://github.com/facebook/react-native/pull/2198
Reviewed By: @svcscm
Differential Revision: D2455391
Pulled By: @sahrens
Summary: @public
Using the saved state of the toggle button, this starts profiling automatically when the `RCTContextExecutor` is set up, if it was profiling before.
Reviewed By: @tadeuzagallo
Differential Revision: D2429026
Summary: As per discussion in #2423 - possible fix for crash. (cc: @javache)
Please share feedback regarding the PR, we are going to be using this diff in production to see if it fixes the crashes we are seeing.
(fixes#2423)
Closes https://github.com/facebook/react-native/pull/2494
Reviewed By: @javache
Differential Revision: D2433515
Pulled By: @nicklockwood
Summary: @public
When using bundled JS the `__DEV__` flag is set to false by default, which can cause errors to be missed if used for testing. This diff adds logic to override the `__DEV__` value when running in RCT_DEBUG configuration, so that the JS debug checks are enabled.
Reviewed By: @tadeuzagallo
Differential Revision: D2429533
Summary: @public
Migrate scripts to open source and add new route on the packager
to directly convert profiler outputs to a devtools compatible format.
Reviewed By: @jspahrsummers
Differential Revision: D2425740
Summary: @public
* Change the JSON generation and remove the dependency on YAJL since it had a
128 depth limit
* Enable the profiler bytecode generation to fix missing frames
* Save the output to a file on the tmp dir instead of outputting it to the console
Reviewed By: @jspahrsummers
Differential Revision: D2420754
Summary:
There was some recent changes to the Makefile, but the open source
build phase script wasn't update. Update it to copy the files to
the right location.
Summary:
I'd like this ability as this has a tendency to get in the way of some of the more complex UI pieces I have. Disabling RCT_DEV entirely is too much for me.
Closes https://github.com/facebook/react-native/pull/2451
Github Author: Tj <tfallon@mail.depaul.edu>
Summary:
Previously the bridge sometimes never fired RCTJavaScriptDidLoadNotification or RCTJavaScriptDidFailToLoadNotification if there was an error (for example, if the source code loaded but we couldn't inject the JSON config). This diff moves the error handling into a method called `stopLoadingWithError` that the bridge can call whenever there is an error.
Also if the script failed to load, the BatchedBridge still called `executeSourceCode`. With this diff the `_loading` flag is set to NO when the script fails to load, and `executeSourceCode` returns immediately when `_loading` is false. This way the bridge does not try to execute JS when there is a loading error.
Closes https://github.com/facebook/react-native/pull/2520
Github Author: James Ide <ide@jameside.com>
Summary:
We currently wait until after views have been updated on the main thread before sending layout events. This means that any code that relies on those events to update the UI will lag the atual layout by at least one frame.
This changes the RCTUIManager to send the event immediately after layout has occured on the shadow thread. This noticably improves the respinsiveness of the layout example in UIExplorer, which now updates the dimension labels immediately instead of waiting until after the layout animation has completed.
Summary:
Currently, the system for mapping JS event handlers to blocks is quite clean on the JS side, but is clunky on the native side. The event property is passed as a boolean, which can then be checked by the native side, and if true, the native side is supposed to send an event via the event dispatcher.
This diff adds the facility to declare the property as a block instead. This means that the event side can simply call the block, and it will automatically send the event. Because the blocks for bubbling and direct events are named differently, we can also use this to generate the event registration data and get rid of the arrays of event names.
The name of the event is inferred from the property name, which means that the property for an event called "load" must be called `onLoad` or the mapping won't work. This can be optionally remapped to a different property name on the view itself if necessary, e.g.
RCT_REMAP_VIEW_PROPERTY(onLoad, loadEventBlock, RCTDirectEventBlock)
If you don't want to use this mechanism then for now it is still possible to declare the property as a BOOL instead and use the old mechanism (this approach is now deprecated however, and may eventually be removed altogether).
Summary:
Fixes#2464
After the bridge parallelisation of the bridge initialisation the executors
were being `setUp` in a background thread, and the `RCTWebViewExecutor` was
crashing when creating a `UIWebView` out of the main thread.
Wrap the `UIWebView` creation in a call to the main thread.
Summary:
When bridge calls are made, they should be dispatched to their
destination GCD queue in the same order they were made. (It
looks like this invariant broke in 336e18d, which caused call
order to depend on the iteration of `NSMapTable` keys
whenever there are calls to multiple modules that share a queue)
Fixes#1941 (in which RCTUIManager createView addUIBlock
blocks were sometimes running after other blocks that depended
on them)
I'm a react-native/iOS/objc newbie, so please excuse any
ignorance this commit may well contain :)
Closes https://github.com/facebook/react-native/pull/2488
Github Author: Ted Suzman <ted@suzman.net>
Summary:
Add JSC profiler to the dev menu and rename the pre-existent one to systrace.
For now it just outputs to the console, but a better workflow is on the way.
Summary:
The arg block for handling structs did not return a value, which was being intepreted as failure. This diff returns YES for success, and also adds an error log for this case so future regressions won't fail silently.
Summary:
`view.screen` can be nil if the view has not yet been added to the view hierarchy (e.g. new view), so we should use `[UIScreen mainScreen]` instead.
In the future, if we need to support multiple screens, one possible fix is to set the rasterization scale in didMoveToWindow/Superview. For now we have just one screen, though.
Closes https://github.com/facebook/react-native/pull/2334
Github Author: James Ide <ide@jameside.com>
Summary:
There's no good reason for initialProperties to be mutable after the RCTRootView has been created. Passing it in through the constructor means we can skip one dispatch_async.
Summary:
This diff removes calls to `-updateClippedSubviews` by only re-clipping when the scroll view moves by a certain number of pixels.
leeway = 50pt => 46.9% of calls removed
leeway = 10pt => 13.2% " " "
Summary:
Our events all follow a common pattern, so there's no good reason why the configuration should be so verbose. This diff eliminates that redundancy, and gives us the freedom to simplify the underlying mechanism in future without further churning the call sites.
Summary:
The module's methodQueue wasn't being created when accessing the modules directly
on the bridge, without going through JS. Preload the queue for now to fix internal
breakages, but I'll figure out a better way to keep it lazy afterwards.
Summary:
For the sake of consistency, `cmd+r` should just post a refresh notification. This way other tools can also observe and react to the refresh without ugly hacks.
Closes https://github.com/facebook/react-native/pull/2175
Github Author: Tj <tfallon@mail.depaul.edu>
Summary:
Moved the view creation & property binding logic out of RCTUIManager into a separate RCTComponentData class - this follows the pattern used with the bridge.
I've also updated the property binding to use pre-allocated blocks for setting the values, which is more efficient than the previous system that re-contructed the selectors each time it was called. This should improve view update performance significantly.
Summary:
Add a method that lets JS set the name of the JSContext for debugging purposes. I check `JSGlobalContextSetName` since it is not available on iOS 7.
Closes https://github.com/facebook/react-native/pull/2144
Github Author: James Ide <ide@jameside.com>
Summary:
Some of the log statements inside argument blocks in RCTModuleMethod were directly accessing ivars, thereby causing a retain cycle that retained the class. I've fixed this by making the access explicit via weakSelf.
Summary:
If the bundleURL has no port(default 80) , the profile request URL will be `<scheme>://<host>:<null>/profile`, that will not work. So we should decide if the port exsits first.
Closes https://github.com/facebook/react-native/pull/2131
Github Author: =?UTF-8?q?=E9=9A=90=E9=A3=8E?= <yinfeng.fcx@alibaba-inc.com>
Summary:
Dynamic Text Sizes for Text component.
Text gains new prop - allowFontScaling (false by default).
There is also AccessibilityManager module that allows you to tune multipliers per each content size category.
Summary:
The bridge implementation on React Android does not currently support boxed numeric/boolean types (the equivalent of NSNumber arguments on iOS), nor does Java support Objective-C's nil messaging system that transparently casts nil to zero, false, etc for primitive types.
To avoid platform incompatibilities, we now treat all primitive arguments as non-nullable rather than silently converting NSNull -> nil -> 0/false.
We also now enforce that NSNumber * objects must be explicitly marked as `nonnull` (this restriction may be lifted in future if/when Android supports boxed numbers).
Other object types are still assumed to be nullable unless specifically annotated with `nonnull`.
Summary:
`RCTDevLoadingView` was being created from a constructor function and creating
a `UIWindow` when the bridge started loading. The `UIWindow` was crashing on
the unit tests since there's no host app.
Summary:
This diff adds support for enforcing nullability in the arguments for exported methods.
We previously supported use of the nullable/nonnull attributes on method arguments, but didn't do anything to ensure that they were respected.
Now, if an argument is marked as nonnull, and a null value is sent for that argument, it will display a redbox.
In future, nonnull will be assumed by default, but for now we assume that un-annotated arguments can be null (to avoid breaking existing code).
Summary:
Add a new bridge delegate protocol to allow a more flexible bridge configuration.
For now it just support the pre-existent configurations + providing the JavaScript
source to the bridge, that should allow pre-loading sources.
Summary:
Fixes#2126
`RCTBatchedBridge` didn't implement `bundleURL`, that was available on the public
bridge interface, so it'd always be `nil`, and setting it would just be ignored.
Summary:
Occasionally people create RCTBridgeModule subclasses or base classes that are not intended to be accessed from JS, and so they don't export them. This was previously flagged as an error by the system. I've now downgraded this error to a warning at startup, and deferred the redbox error until the module is directly accessed by native or JS code.
Summary:
This diff implements highlighting of tapped text subranges for the iOS `<Text>` component, styled to match how iOS webkit views highlight links (translucent grey overlay with rounded corners).
Highlighting is enabled by default for any `<Text>` component which has an onPress handler. To disable the highlight, add `suppressHighlighting={true}` to the component props.
Summary:
Added the ability to turn on and off the network activity indicator using:
```
StatusBarIOS.setNetworkActivityIndicatorVisible(true)
```
and
```
StatusBarIOS.setNetworkActivityIndicatorVisible(false)
```
Also added an example to the UIExplorer example app.
Fix#986
Closes https://github.com/facebook/react-native/pull/2079
Github Author: Mark Miyashita <negativetwelve@gmail.com>
Summary:
This introduces event counts to make sure JS doesn't set out of date values on
native text inputs, which can cause dropped characters and can mess with
autocomplete, and obviates the need for the input buffering which added lag and
complexity to the component. Made sure to test simulated super-slow JS text
event processing to make sure characters aren't dropped, as well as typing
obviously correctable words and making sure autocomplete works as expected.
TextInput is now a controlled input by default without causing any issues for
most cases, so I removed the `controlled` prop.
Fixes selection state jumping by restoring it after setting new text values, so
highlighting the middle of some text in the new ReWrite example and hitting
space will replace that selection with an underscore and keep the cursor at a
sensible position as expected, instead of jumping to the end.
Ads `maxLength` prop to support the most commonly needed syncronous behavior:
preventing the user from typing too many characters. It can also be used to
prevent users from continuing to type after entering special characters by
changing it to the current length after a regex match. Made sure to verify it
works well with pasted input (including in the middle of existing text),
truncating it and collapsing the selection the same way it does on the web.
Fixes bug in TextEventsExample where it wouldn't show the submit and end events,
even though there were firing correctly.
Summary:
`NSProcessInfo operatingSystemVersion` was being used to check the system version
for the Legacy Profiler on `RCTContextExecutor` but it's only available on iOS8+
Change it to `[UIDevice systemVersion]`