viewController中addChildViewContr

在项目开发过程中，点击一个cell，进入到下一个vc，界面是一样的，由于本身的VC是push进来的，自控制器不想使用push，就想到了addChildViewController。

创建一个数组childVCs保存自己add进来的vc

1.调用addChildViewcontroller()方法

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<code>fileprivate func addChildViewcontroller(){

if self.chidlVCS.count > 0 {

let lastVC = self.chidlVCS.last

if lastVC != nil{

lastVC?.view.removeFromSuperview()

lastVC?.removeFromParentViewController()

}

}

let VC = ViewController.init()

self.view.addSubview(VC.view)

self.addChildViewController(VC)

self.chidlVCS.append(VC)

weak var weakself = self

VC.block = {

weakself?.addChildViewcontroller()

}

VC.backBlock = {

weakself?.removeChildViewcontroller()

}

}

</code>

fileprivate func removeChildViewcontroller(){

if self.chidlVCS.count > 0 {

let lastVC = self.chidlVCS.last

if lastVC != nil{

lastVC?.view.removeFromSuperview()

lastVC?.removeFromParentViewController()

self.chidlVCS.removeLast()

}

}

if self.chidlVCS.count > 0 {

let lastVC = self.chidlVCS.last

if lastVC != nil{

self.view.addSubview(lastVC!.view)

self.addChildViewController(lastVC!)

}

}

}