53 lines
1.9 KiB
Swift
53 lines
1.9 KiB
Swift
// Copyright 2022-present 650 Industries. All rights reserved.
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/**
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Since iOS 11, launching ImagePicker with `allowsEditing` option makes cropping rectangle
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slightly moved upwards, because of StatusBar visibility.
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Hiding StatusBar during picking process solves the displacement issue.
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See https://forums.developer.apple.com/thread/98274
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*/
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internal class StatusBarVisibilityController {
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private var shouldRestoreStatusBarVisibility = false
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func maybePreserveVisibilityAndHideStatusBar(_ shouldHideStatusBar: Bool) {
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guard shouldHideStatusBar && !UIApplication.shared.isStatusBarHidden else {
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return
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}
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shouldRestoreStatusBarVisibility = true
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setStatusBarHidden(true)
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}
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func maybeRestoreStatusBarVisibility() {
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guard shouldRestoreStatusBarVisibility else {
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return
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}
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shouldRestoreStatusBarVisibility = false
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setStatusBarHidden(false)
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}
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/**
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Calling -[UIApplication setStatusBarHidden:withAnimation:] triggers a warning
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that should be suppressable with -Wdeprecated-declarations, but is not.
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The warning suggests to use -[UIViewController prefersStatusBarHidden].
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Unfortunately until we stop presenting view controllers on detached VCs
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the setting doesn't have any effect and we need to set status bar like that.
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*/
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private func setStatusBarHidden(_ hidden: Bool) {
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let selector = NSSelectorFromString("setStatusBarHidden:withAnimation:")
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UIApplication.shared.perform(selector, with: hidden, with: false)
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// TODO: (@bbarthec) below is possible alternative
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// let obj = X()
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// let sel = #selector(obj.sayHiTo)
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// let meth = class_getInstanceMethod(object_getClass(obj), sel)
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// let imp = method_getImplementation(meth)
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//
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// typealias ClosureType = @convention(c) (AnyObject, Selector, String) -> Void
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// let sayHiTo : ClosureType = unsafeBitCast(imp, ClosureType.self)
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// sayHiTo(obj, sel, "Fabio")
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// prints "Hello Fabio!"
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}
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}
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