使用 UIImagePickerController 的实时相机背景 iOS Objective-C？

Question

我的实时摄像头背景可以使用UIImagePickerController 类吗？

我的应用程序使用UIImagepickercontroller 来捕获图像和视频。我的设计是这样的：

主页视图控制器中有两个按钮（按钮 1 用于照片，按钮 2 用于视频），但同时，我的背景是一个类似的相机。我已经成功实现了照片和视频功能。除了现场背景之外，所有内容都已完成。

我已经尝试过了：Setting a background image/view to live camera view? 使用 AVFoundation。但它使相机加载如此缓慢。有时背景会冻结。

我的视频和照片代码：

1. 视频：

   -(IBAction)videoActionButton:(id)sender {
   
    NSLog(@"video button has been clicked");
   
   // [self dismissViewControllerAnimated:NO completion:nil];
   
    //    VideoViewController *videoViewController = [[VideoViewController alloc] initWithNibName:nil bundle:nil];
   //    [self.navigationController pushViewController:videoViewController animated:YES];
   
   
   if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
   {
   videoRecorder = [[UIImagePickerController alloc] init];
   videoRecorder.sourceType = UIImagePickerControllerSourceTypeCamera;
   videoRecorder.delegate = self;
   
   NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
   NSArray *videoMediaTypesOnly = [mediaTypes filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(SELF contains %@)", @"movie"]];
   
   if ([videoMediaTypesOnly count] == 0)       //Is movie output possible?
   {
       UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry but your device does not support video recording"
                                                                delegate:nil
                                                       cancelButtonTitle:@"OK"
                                                  destructiveButtonTitle:nil
                                                       otherButtonTitles:nil];
       [actionSheet showInView:[[self view] window]];
       // [actionSheet autorelease];
   }
   else
   {
       //Select front facing camera if possible
       if ([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront])
           videoRecorder.cameraDevice = UIImagePickerControllerCameraDeviceFront;
   
       videoRecorder.mediaTypes = videoMediaTypesOnly;
       videoRecorder.videoQuality = UIImagePickerControllerQualityTypeMedium;
       videoRecorder.videoMaximumDuration = 600;           //Specify in seconds (600 is default)
   
       [self presentViewController:videoRecorder animated:YES completion:nil];
   }
   // [videoRecorder release];
   }
   else
   {
   //No camera is availble
   }
   
   // [imagePickerController release];
   
   //    UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
   //    UINavigationController *videoViewController = [sb instantiateViewControllerWithIdentifier:@"videoViewController"];
    //    [self presentViewController:videoViewController animated:NO completion:NULL];
   
   }
   

2. 照片：

      -(IBAction)photoActionButton:(id)sender {
       NSLog(@"photo button has been clicked");
   
       photoButtonClicked = true;
   
       UIImagePickerControllerSourceType type = UIImagePickerControllerSourceTypeCamera;
   
       if([UIImagePickerController isSourceTypeAvailable:type]){
   
           UIImagePickerController *picker = [[UIImagePickerController alloc] init];
           picker.allowsEditing = NO;
   
   
           picker.delegate   = self;
   
           picker.sourceType = type;
   
   
           [self presentViewController:picker animated:YES completion:nil];
       }
   
   }
   

PS：有人可以帮我解决一下代码格式吗？

Answer 1

您可以使用 UIImagePickerController 的cameraOverlayView 属性。

1. 创建一个 UIImagePickerController
2. 用按钮配置视图（视图应该是清晰的背景色）
3. 将视图设置为图像选择器的cameraOverlayView
4. 目前的图像选择器

Answer 2

您应该为此使用 AVCam。

https://github.com/gabro/AVCam

谢谢