Question

我在UIImagePickerController的帮助下使用自定义相机。我正在继承UIImagePickerController类并使用without present / dismiss。我们只是打开自定义相机视图和拍照。一段时间后点击相机takepicture方法被调用，应用程序正在崩溃。在此期间没有调用委托方法。我的代码是这样的：

-(void)viewDidLoad
{
   if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear] && self.camType==2)
    {
        self.sourceType=UIImagePickerControllerSourceTypeCamera;
        self.cameraDevice=UIImagePickerControllerCameraDeviceRear;
        self.showsCameraControls = NO;
        self.wantsFullScreenLayout=NO;
        self.navigationBar.hidden=NO;
        self.cameraOverlayView = mainView;

        }
    }
    else
    {
        self.navigationBar.hidden=YES;
        self.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
        [notAllowBtn setHidden:TRUE];
        [cmView setHidden:TRUE];
    }

    self.delegate=self;
    [self.view addSubview:cmView];
}

-(void)cameraTakePic {

    if([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear]) {
        [self takePicture];
    }
}


- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info{
  if (![info objectForKey:@"UIImagePickerControllerOriginalImage"]) {

        NSArray *arr=[[appDel navController] viewControllers];
        id obj=[arr lastObject];
        UIViewController *objContr=((UIViewController *)obj);

        objContr.navigationController.navigationBar.userInteractionEnabled = YES;

        [clickBtn setEnabled:YES];

        return;
    }


    UIImage* image = nil;
    UIImage *imageTemp = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
}

Answer 1

来自Apple UIImagePickerController类引用：

UIImagePickerController类仅支持纵向模式。这个 class旨在按原样使用，不支持子类化。此类的视图层次结构是私有的，不得修改，除了一个例外。您可以为自定义视图分配 cameraOverlayView属性并使用该视图来显示其他内容信息或管理相机界面之间的交互和你的代码。

您不应该继承UIImagePickerController类，而应该使用AVFoundation并制作自定义捕获方法。

调用takepicture方法时uiimagepicker崩溃

1 个答案: