/Swift/Ios swift create new background thread

Ios swift create new background thread

extension DispatchQueue {

    static func background(delay: Double = 0.0, background: (()->Void)? = nil, completion: (() -> Void)? = nil) {
        DispatchQueue.global(qos: .background).async {
            background?()
            if let completion = completion {
                DispatchQueue.main.asyncAfter(deadline: .now() + delay, execute: {
                    completion()
                })
            }
        }
    }
}

// USAGE 

DispatchQueue.background(delay: 3.0, background: {
    // do something in background
}, completion: {
    // when background job finishes, wait 3 seconds and do something in main thread
})

DispatchQueue.background(background: {
    // do something in background
}, completion:{
    // when background job finished, do something in main thread
})

DispatchQueue.background(delay: 3.0, completion:{
    // do something in main thread after 3 seconds
})

Source: stackoverflow.com

Similar codes

1 vote189 views1 answer
Swiftui with animation duration
Swift
1 vote208 views1 answer
Swift round double to 2 decimal places
Swift
1 vote196 views1 answer
Swift change label text
Swift
1 vote202 views2 answers
How to dismiss keyboard in swift
Swift
0 vote206 views1 answer
Reprobate
Swift
0 vote198 views1 answer
Meu eclipse não gera a implementação do mapstruct
Swift
2 votes205 views1 answer
Add corner radius to uiview swift
Swift
0 vote198 views1 answer
Mac os
Swift
0 vote206 views1 answer
Swift how to animate constraint change
Swift
1 vote201 views1 answer
How to flip or toggle boolean value in swift
Swift