如何创建自定义相机视图，而不是UIImagePickerViewController？

I created a simple application using UIImagePickerViewController for capturing from the camera, but I'd like to customize the interface for grabbing from the camera, such as adding some buttons.

我使用UIImagePickerViewController创建了一个简单的应用程序，用于从相机捕获，但我想自定义从相机抓取的界面，例如添加一些按钮。

UIImagePickerViewController doesn't allow this directly, so how would you create a custom view that allows for displaying the live camera feed and capturing from it?

UIImagePickerViewController不允许直接使用它，那么如何创建一个自定义视图，允许显示实时摄像头源并从中捕获？

3 个解决方案

#1

The easy way is to continue to use UIImagePickerViewController but set showsCameraControls to NO and provide your own user interface using cameraOverlayView.

简单的方法是继续使用UIImagePickerViewController但将showsCameraControls设置为NO并使用cameraOverlayView提供您自己的用户界面。

The more difficult (but more flexible) way is to use the AVFoundation classes (particularly AVCaptureVideoPreviewLayer and AVCaptureStillImageOutput) to construct your own camera.

更困难（但更灵活）的方法是使用AVFoundation类（特别是AVCaptureVideoPreviewLayer和AVCaptureStillImageOutput）来构建自己的相机。

#2

Yes, create a UIImagePickerController from code, adjust its properties, add an overlay onto it, and with you controller, control whatever you want on that overlay : custom controls, overlaying images, etc...

是的，从代码创建UIImagePickerController，调整其属性，在其上添加叠加，并与您的控制器，控制在该叠加上你想要的任何内容：自定义控件，覆盖图像等...

That gives something like this :

这给出了这样的东西：

self.picker = [[UIImagePickerController alloc] init];
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
self.picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
self.picker.showsCameraControls = NO;
self.picker.navigationBarHidden = YES;
self.picker.toolbarHidden = YES;
self.picker.wantsFullScreenLayout = YES;

// Insert the overlay
self.overlay = [[OverlayViewController alloc] initWithNibName:@"Overlay" bundle:nil];
self.overlay.pickerReference = self.picker;
self.picker.cameraOverlayView = self.overlay.view;
self.picker.delegate = self.overlay;

[self presentModalViewController:self.picker animated:NO];

OverlayViewController is the controller that you must write to control everything you add onto the overlay.

OverlayViewController是您必须编写的控制器，用于控制添加到叠加层中的所有内容。

pickerReference is a property you can keep to send orders to the camera. For example, you could call the following from an IBAction coming from a UIButton placed onto the overlay :

pickerReference是您可以保留向相机发送订单的属性。例如，您可以从放置在叠加层上的UIButton的IBAction中调用以下内容：

[self.pickerReference takePicture];

#3

You need to set the value of showCameraControls to NO and provide your own custom overlay view using the cameraOverlayView.

您需要将showCameraControls的值设置为NO，并使用cameraOverlayView提供您自己的自定义叠加视图。

#1