ios – 使用UIImagePickerController时的额外“幽灵”相机按钮

在文档之后,我使用以下代码生成我的相机视图：

if(UI_USER_INTERFACE_IdioM() == UIUserInterfaceIdiomPad) {
        self.imagePickerController = [[UIImagePickerController alloc] init];
        self.imagePickerController.delegate = self;
        self.imagePickerController.sourceType = sourceType;
        if (sourceType == UIImagePickerControllerSourceTypeCamera) {
            if ([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront]) {
                self.imagePickerController.cameraDevice =  UIImagePickerControllerCameraDeviceFront;
            }
            self.imagePickerController.allowsEditing = YES;
            self.imagePickerController.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
        }

        popover = [[UIPopoverController alloc] initWithContentViewController:self.imagePickerController];
        [popover presentPopoverFromrect:self.profilePicture.frame
                                 inView:self.view
               permittedArrowDirections:UIPopoverArrowDirectionAny
                               animated:YES];
        return;
    }

但是当它产生时,我会得到这个恼人的“额外幽灵”相机按钮……

它不起作用,似乎只是嘲笑我.

如果我要求对象隐藏其输入按钮,则所有按钮都会消失.我认为没办法告诉那个特定的按钮.

UPDATE

我发现它只是第一次出现.如果我关闭并重新打开弹出窗口,它就消失了……