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React standard library — must-have toolbox for any React project.
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Trending Discussions on libreact
QUESTION
I'm developing a Camera App which uses the presentationDimensions(...) API:
...ANSWER
Answered 2021-Mar-07 at 11:05Finally found the answer. I had SWIFT_VERSION
pinned to 5.0, but iOS 13 came with Swift 5.2 so pinning Swift to 5.2 (and removing the LIBRARY_SEARCH_PATH
pointing to 5.0) solved it.
That means, this:
QUESTION
I'm used to search and install packages with apt, under Debian-based distributions, and one useful feature of it is that you can search in the description of packages as well, so you don't need to know the exact name of a package to find it. It can be used in a exploratory way. For example, say I'm searching for packages related to functional programming, but haven't a specific one in mind. I could do just this:
...ANSWER
Answered 2021-Jan-15 at 23:53No, it is not possible to search package descriptions with conda search
. The query results of conda search
, including those with the --info|-i
flag, do not include package description info.
There is limited functionality for retrieving package summaries from Anaconda Cloud. This is provided by the anaconda show
command in the package anaconda-client
and only provides exact matching (channel and package). For example,
QUESTION
I have a react native app and just noticed that a few lines were added for Recovered References
in my project.pbxproj
file in Xcode.
I don't remember adding or deleting any references and the recovered references show libraries that I normally use. I'm hesitant to check in the local changes to git without knowing what these changes were. Should I just discard these changes?
Can someone explain why these lines might be added if I didn't add or remove these packages myself? Does this mean some references were deleted to later be recovered? The only thing I can think of is that I ran react-native link, would that have made these changes?
This line was added
...ANSWER
Answered 2017-Sep-21 at 09:14As gheni4 mentioned, Xcode 9 adds several *.a files under a Recovered References for some reason. By removing the folder and all targets except the iOS one (iOS-Test, tvOS, tvOS-Test) they are no longer automatically created and I can finally build without errors.
QUESTION
I have a React Native application that I upgraded. Back when it was legacy, if you went to a news article and the article had hyperlinks and you clicked on the hyperlinks it would redirect you to your phones browser and open the link there, but it no longer does that because we had to upgrade the react-native-autoheight-webview
library, so the patch that was done for the 0.6.1 version is now gone. That patch is what allowed hyperlinks to open in a separate browser.
I have been trying to repeat the process so we can get the same behavior. So I added this code to node_modules/react-native-autoheight-webview/AutoHeightWebView/index.js
file:
ANSWER
Answered 2019-Oct-18 at 05:04If you want all hyperlinks to open in external browser then this method which you've tried should work:
QUESTION
I am getting Undefined symbols for architecture arm64 when building react-native application in release variant. I deployed the app last month on the store without any problem and now I made some changes and wanted to update it but I cannot build it.
I have tried:
- Deleting .rncache
- Deleting DerivedData
- Deleting the Build Folder
- Removing libReact.a and adding it again
- Setting Dead Code Stripping to No
- Deleting node_modules and reinstalling them
Other solutions that i encountered that led me to setting:
- Valid architectures: arm64 armv7 armv7s
- Other Linker Flags: -ObjC -lc++
did not work either.
Can anyone help me with this problem ?
More specific info about the bug :
...ANSWER
Answered 2019-Sep-12 at 03:58Make sure JavaScriptCore.framework
is added to Link Binary With Libraries
QUESTION
Let me start by saying that similar SO questions suggest the problem may be related to not having linked the lib.
I've ran react-native link react-native-fbsdk
again, to confirm it was indeed linked, and confirmed it was
ANSWER
Answered 2019-Jan-10 at 22:11As of the moment of this issue, the react-native-fbsdk github indicates this guide should be followed, with the exception of step 2 (Linking the SDK), with the frameworks being dragged into the project instead. That's similar to what's indicated at the "Quick Start" guide you get to from inside FB's Dashboard. Both those guides were the source of the issues I was seeing.
Following this guide instead got it working.
QUESTION
During the iOS linking phase, I started seeing errors for my React Native project.
React Native version: 0.41.2
, 0.40
, 0.39
All worked fine, I edited the Android version, React Native code didn't change, when this kind of linking errors started showing up with headers on /node_modules/react-native/React/Base/{RCTHeaderName.h}
path not being found:
ANSWER
Answered 2017-Feb-12 at 17:33Do you have Parallelize build
option unchecked and React listed first in your build targets?
You can find this window in Xcode => Your project icon near the run button => Edit scheme => Build tab
QUESTION
I have an existing react native application and I'd like to use react-native link with new dependencies that contain PodSpecs. However, this poses an issue since they each have a dependency on React.
I have added the following within my Podfile:
...ANSWER
Answered 2018-Oct-03 at 00:32Posting the answer in case anyone else runs into something similar. It turns out that the linked libraries were wrong, since some may have been referencing the libraries in the React project from node_modules, while some may have been referencing the libraries from the React Pod.
Steps to fix:
- Remove the links to React and any of the subspecs contained within the React project.
- Remove all previously generated Pod files
- add post install script to Podfile
- run
pod install
- link all necessary React dependencies
Post install script:
QUESTION
So as the title said, I tried on both Xcode versions and still no luck. This is the error I'm getting:
...ANSWER
Answered 2018-Sep-05 at 05:07So based on the comment, apparently it's the previous failed builds cache that's messing up my archiving process. All I had to do was to delete node_modules
, ios/builds
and ios/Pods
then do npm install
, react-native link
and cd ios && pod install
once again and the project was all good.
After that I was getting duplicate symbols on arm64
error which was simply because both react-native
and RCTWebSocket
have some overlapping classes.
So to solve that I just have to delete libRCTWebSocket.a
from Project's Linked Frameworks and Libraries
info subcategory on General tab from XCode.
Special thanks to @needsleep for the solution!
QUESTION
I have a react native app that's running on React Native 0.51.0, Xcode 9.2, exclusively on iOS 11.X (mostly 11.2.5/6) iPad Pros.
After upgrading from 0.38.X to 0.49.X, I started noticing a white screen on loading, like the app wasn't starting to load the React Native bundle. I have since upgraded React Native to 0.51.0, but the problem persists.
To add a bit of color to this issue, one thing I noticed was after successfully seeing the app load to the home screen, there was one particular transition that would immediately lead to a stuck white screen again. The logs for that issue showed an issue with one of the React Native objects. I noticed that I had added the
RCTAnimation.xcodeproj
to the parent project, but the libRCTAnimation.a
was no longer linked in the Linked Frameworks and Libraries
section. After adding the lib back to being linked, that particular white screen went away, and worked properly.
At this point, I've triple checked that all of my included React Native projects are linked properly. At this point, I'm not quite sure which ones are still 100% required, but the list is as follows (xcodeproj and verified linked lib):
- React.xcodeproj > libReact.a
- RCTAnimation.xcodeproj > libRCTAnimation.a
- RCTActionSheet.xcodeproj > libRCTActionSheet.a
- RCTGeolocation.xcodeproj > libRCTGeolocation.a
- RCTImage.xcodeproj > libRCTImage.a
- RCTLinking.xcodeproj > libRCTLinking.a
- RCTNetwork.xcodeproj > libRCTNetwork.a
- RCTSettings.xcodeproj > libRCTSettings.a
- RCTText.xcodeproj > libRCTText.a
- RCTVibration.xcodeproj > lib RCTVibration.a
- RCTWebSocket.xcodeproj > libRCTWebSocket.a
- RCTCameraRoll.xcodeproj > libRCTCameraRoll.a
- RNBlur.xcodeproj > libRNBlur.a
- BVLinearGradient.xcodeproj > libBVLinearGradient.a
- RNVectorIcons.xcodeproj > libRNVectorIcons.a
- BugsnagReactNative.xcodeproj > libBugsnagReactNative.a
- ART.xcodeproj > libART.a
Here is my AppDelegate start up code:
...ANSWER
Answered 2018-Mar-27 at 17:55Two examples of white screens (this was a long solution...)
White Screen #1:
At some point, React Native no longer allows the View to have children. When the app hit the state where we add a child to one of our
views, the screen would go white. This was at least followed up with a print statement to the log indicating the problem.
White Screen #2 (The main one):
As of iOS 11, we've noticed a different behavior when calling DispatchQueue.main.async {}
from the main thread. It seems like this is ripe for creating deadlock situations (we've literally left the thing running for hours with no progress); maybe this is a bug in Apple's Dispatch Queueing system?
One of our React Native bridge objects was calling DispatchQueue.main.async {}
inside of its constructor. This was never completing, blocking the main thread, and so the rest of React Native would not proceed to load (it wouldn't even get to loading the bundle). Nothing would print, and pausing the debugger at this point never produce usable state.
We simply removed the wrapping DispatchQueue.main.async {}
and are calling these statements in-line, as it's already on the main thread.
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