ios - 拍照后在导航堆栈上添加 subview Controller

Question

我已经在我的应用程序 (inventoryviewcontroller) 中实现了相机功能。

拍照后，图像被添加到 invetoryviewcontroller 上，但 sectionviewcontroller 消失了。似乎创建了一个导航堆栈并在 sectionviewcontroller 的顶部添加了 inventoryviewcontroller。

单击提交按钮后，inventoryviewcontroller 消失，sectionviewcontroller 出现。

我在我的设备上使用 ios 8 操作系统。

我怎样才能解决这个问题？

// SectionViewController.m 
       iViewController = (InventoryViewController *)[self.storyboard  instantiateViewControllerWithIdentifier:@"InventoryViewController"];
        iViewController.view.frame = CGRectMake(728, 32, 300, 736);
        [self.view addSubview:iViewController.view];
        iViewController.view.tag = 17;

  // InventoryVieController.m 
 - (IBAction)cameraBtn:(id)sender {
        UIImagePickerController *picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        picker.allowsEditing = YES;
        picker.sourceType = UIImagePickerControllerSourceTypeCamera;
        [self presentViewController:picker animated:YES completion:NULL];

    }

    - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
        UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
        self.noteImageView.image = chosenImage;
        [picker dismissViewControllerAnimated:YES completion:NULL];

    }

    - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
        [picker dismissViewControllerAnimated:YES completion:NULL];
    } 

  - (IBAction)submitBtn:(id)sender {
         UIView *viewToRemove = [self.view viewWithTag:17];
         [viewToRemove removeFromSuperview];
    } 

拍照前:

拍照后:

Answer 1

当 InventoryViewController 的 View 被添加到 SectionViewController 的 View 时，问题出在没有将 InventoryViewController 添加为 subview Controller 。所以执行此操作的代码如下所示，

    iViewController = (InventoryViewController *)[self.storyboard  instantiateViewControllerWithIdentifier:@"InventoryViewController"];
    [self addChildViewController: iViewController];
    [iViewController didMoveToParentViewController: self];
    iViewController.view.frame = CGRectMake(728, 32, 300, 736);
    [self.view addSubview:iViewController.view]; 

移除view的时候，child也要移除(这段代码在child中)，

- (IBAction)submitBtn:(id)sender {
    [self.view removeFromSuperview];
    [self willMoveToParentViewController:nil];
    [self removeFromParentViewController];
}