- 使用实例
@objc func phoneBtnClick(){
let vc = EWCountryCodeViewController()
vc.backCountryCode = {
[weak self] country, code in
self?.phoneBtn.setTitle("+"+code, for: .normal)
}
present(vc, animated: true, completion: nil)
}
相关博客:
Swift 闭包无脑加 [weak self] 行不行? - 知乎
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