swift - 使用 rxSwift 绑定(bind)数据时内存泄漏

Question

当我尝试绑定(bind)我的 UITextField 时这是在我的 ViewController带变量 var location = Variable<String?>("")这是在我的 ViewControllerViewModel使用 rxSwift我收到有关内存泄漏的信息。我这样做如下:

My ViewController

class ViewController {

    @IBOutlet weak var locationTextField: UITextField!
    var viewControllerViewModel: ViewControllerViewModel?
    lazy var disposeBag = DisposeBag()
    /*
        Another variables etc.
    */

    override func viewDidLoad() {
    super.viewDidLoad()

        bindDataWithViewModel()
    }

    func bindDataWithViewModel() {
        if let viewModel = viewControllerViewModel {
            locationTextField.rx.text.bindTo(viewModel.location).disposed(by: disposeBag) -> // here shows memory leak
        }
    }
}

My ViewControllerViewModel

class ViewControllerViewModel {

    var location = Variable<String?>("")
    var infoStruct = InfoStruct()
    lazy var disposeBag = DisposeBag()

    init() {
        initValueObservable()
    }

    func initValueObservable() {
        location.asObservable().subscribe(onNext: { [unowned self] text in
        self.infoStruct.location = text
    }).addDisposableTo(disposeBag)
    }
}

您是否知道为什么会发生这种内存泄漏，我该如何避免这种情况？

Answer 1

func bindDataWithViewModel() {

    if let viewModel = viewControllerViewModel {
        locationTextField.rx.text.orEmpty
            .bindTo(viewModel.location)
            .addDisposableTo(disposeBag) // use addDisposableTo
    }
}