将子视图推送和弹出到堆栈时出现问题

Problems pushing and popping subViews onto the stack

我正在尝试添加一个需要显示在堆栈顶部的子层 (UINaviationController),它显示得很好,但当我尝试关闭视图时,我无法让它正常工作,它要么关闭整个 UINavigtioncontroller 并杀死整个堆栈,或者它只是删除我的部分视图并在顶部留下黑屏。

我需要的是让我的子视图显示在堆栈顶部,并能够在我的委托被调用后将其从堆栈中弹出

代码如下

在此处创建子视图

- (IBAction)transactionListViewCameraBtn_Pressed:(id)sender {

    if([NWTillHelper isDebug] == 1) {
        NSLog(@"%s entered", __PRETTY_FUNCTION__);
    }

    self.capture = [[ZXCapture alloc] init];
    self.capture.camera = self.capture.back;
    self.capture.focusMode = AVCaptureFocusModeContinuousAutoFocus;

    [self.view.layer addSublayer:self.capture.layer];


    [self.view bringSubviewToFront:self.scanRectView];
    [self.view bringSubviewToFront:self.decodedLabel];

    self.capture.delegate = self;

    [self applyOrientation];
}

这就是我试图再次关闭子视图的方法,但是 none 它们有效

[self.view removeFromSuperview];
//[self dismissViewControllerAnimated:YES completion:nil];
//[[self navigationController] popViewControllerAnimated:YES];
//[self removeFromParentViewController];

我一定是遗漏了什么,但是什么?

您需要移除捕获层并隐藏 scanRectView

试试下面的代码:

self.scanRectView.hidden = YES;
[self.capture.layer removeFromSuperlayer];