Question: how does this work in iOS

[StevePotter]

@crazycodeboy could you please explain to me how the code in https://github.com/crazycodeboy/react-native-splash-screen/blob/master/ios/SplashScreen.m prevents the splash screen from hiding until hide() is called? I'm good with objC but don't understand the trick involved here. If you explain it and agree with me, I'd be happy to add a comment in the code for curious people like me.

[alinz]

@StevePotter It is pretty simple, It has a forever loop which sleeps for 0.1 seconds. So once the React-Native lunches, then you have a chance to break that loop by calling hide method.

[StevePotter]

@alinz I'm still confused. Does it occupy the main run loop, which causes UI events not to process, until hide is called?
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[alinz]

@StevePotter it does block. but because it sleeps for 0.1 seconds, it gives enough time to other tasks to be executed, But because you will break the loop in few seconds, I think it's ok! The elegant and more complex solution would be register for callback and let the os signal us when a task is done. But that requires a lot of code and to be honest with you, I would rather use the simple code than very deep complex code.

[QuantBull]

@alinz could hide statusbar on the ios platform when splash is shown? i am poor of Object-c. thanks.

[alinz]

@iamweilee, There are multiple ways of doing this.
1: make the splash screen big enough to cover the status bar
2: hide status bar during app launch. I think you can do it inside xcode configuration. google it and you will find it.