While closing the viewcontroller via dragging, calling floatPanelController's hide() will cause a crash.

[cozzin]

Short description

While closing the viewcontroller via dragging, calling floatPanelController's hide() will cause a crash.

Expected behavior

1. Drag to close view
2. Touch backdropview (call hide() method) while dragging to close view controller
3. The hide () command is ignored because the screen is already closed

Actual behavior

1. Drag to close view
2. Touch backdropview (call hide() method) while dragging to close view controller
3. Crash image

Steps to reproduce

1. Add gesture for backdrop
2. Close Panel using drag
3. Touch backdrop view while the screen is closing

Code example that reproduces the issue

public final class ExampleViewController: FloatingPanelController {

    private lazy var backdropTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleBackdrop(_:)))

    init() {
        super.init()
        backdropView.addGestureRecognizer(backdropTapGesture)
    }

    @objc func handleBackdrop(_ sender: UITapGestureRecognizer) {
        hide()
    }
}

Environment

Library version
1.5.1

Installation method

• CocoaPods
• Carthage
• Git submodules

iOS version(s)
12.2

Xcode version
10.2.1

[scenee]

Thanks, @cozzin! I will fix it.

[scenee]

I fixed #220. Thanks again, @cozzin!

[cozzin]

@scenee You're welcome. I am a big fan of this library. Thank you for your quick fix.