IDidibidiart·Jul 7, 2017
Most of your reaction is anger and hate. That cannot be the truth. The truth is always balanced. If you were right then all of us who love React Native and have used it to build amazing cross-platform UX are wrong or have less insight than you, which cannot be true unless you've got some real insight or something, which is certainly not true.
The whole point of React Native is to develop apps for both iOS and Android (you seem to be an iOS focused developer so you wouldn't care but many of us are targetting both) and doing that easily (for those who build RN and those who use it) means we have to create a standard set of behaviors that work across both platforms and work far better than running a web app in a webview. React Native achieves that goal. But it also has an enormously capable ecosystem with companies like Airbnb and Wix making
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substantial contributions to things like Native cross platform Navigation libraries.
When it comes to threading, the native views run in the main UI thread (just like native views would in any native environment) while the JS business logic runs in its own thread. To minimize serialization costs between JS and Native a lot has been done so JS objects like styles are passed by numeric reference. You can always use something like react-native-fetch-blob to natively fetch an image or some other heavy asset and go around the JS-Native bridge. But you can also use Inage component to fetch and remder images without serializing over the bridge. The user community has many other examples and great libraries to complement React Native. All you have to do is be curious rather than judgemental and harshly criticizing things that you obviously lack in-depth knowledge about.
When it comes to layout, Flexbox and support for percentage based siIng give us the primitives we need to replicate the familiar responsive grid systems we use on the web. See this for example:
https://github.com/idibidiart/react-native-responsive-grid
And as far back as August 2015, I was able to create a custom keyboard in Obj-C and expose it as a React Native component:
https://m.youtube.com/watch?v=YV3p09KoYKw
There is nothing that could not be done with a combination of platform specific knowledge and React Native, and the technology is still evolving.
So Facebook has shared their work with us and we shared our work with the community. What do you have to share besides criticism of other people's work? Do you have any work of your own that helps others build things? Put it out there and open it to criticism from random folks on the internets. Let's see your true genius!