关于ios:iOS拍照定制之AVCapturePhotoOutput

领导安顿工作，写个拍照性能，界面跟零碎拍照有点出入

拍完照片，底部显示已拍照片，有个拍照下限 [在此不管]

点击已拍照片，能够预览、放大放大查看

零碎拍照必定不行了，只能定制，没提是否拍照禁止声音的需要 [非偷拍，正经人]

原则上能简略就不简单，拍砖 AVCapturePhotoOutput

首先，你须要一块临时以后场景的 layer，这里不提，参考上篇 [iOS 写在定制相机之前]

其次，定义 session + photoOutput

再次，定义拍照事件

最初，代理中取得照片

上菜

• session 定义 input 设置

  self.session = [[AVCaptureSession alloc] init];
  self.session.sessionPreset = AVCaptureSessionPresetPhoto;
  AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
  self.dInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];
  if ([self.session canAddInput:self.dInput]) {[self.session addInput:self.dInput];
  }

• 拍照场景 layer

  self.preView = [[AVPreView alloc] init];
  self.preView.backgroundColor = [UIColor colorWithHexs:0x3f3f3f];
  self.preView.session = self.session;
  [self.preView setVideoOrientation:AVCaptureVideoOrientationLandscapeRight];
  [self.view addSubview:self.preView];
  [self.preView mas_makeConstraints:^(MASConstraintMaker *make) {make.left.equalTo(self.view);
      make.top.equalTo(self.topView.mas_bottom);
      make.bottom.equalTo(self.collect.mas_top);
      make.right.equalTo(rightView.mas_left);
  }];

• 设置 photoOutput

  self.photoOutput = [[AVCapturePhotoOutput alloc] init];
  if ([self.session canAddOutput:self.photoOutput]) {[self.session addOutput:self.photoOutput];
  }
  [self.photoOutput.connections.lastObject setVideoOrientation:AVCaptureVideoOrientationLandscapeRight];

• session start

  [self.session startRunning];

• 拍照点击

  AVCapturePhotoSettings *set = [AVCapturePhotoSettings photoSettings];
  [self.photoOutput capturePhotoWithSettings:set delegate:self];

• AVCapturePhotoCaptureDelegate

  #pragma mark - AVCapturePhotoCaptureDelegate
  -(void)captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhoto:(AVCapturePhoto *)photo error:(NSError *)error  API_AVAILABLE(ios(11.0)) {if (!error) {
          // 应用该形式获取图片，可能图片会存在旋转问题，在应用的时候调整图片即可
          NSData *data = [photo fileDataRepresentation];
          UIImage *image = [UIImage imageWithData:data];
          
          // 对，就是下面的 image
      }
  }
  

See me Tomorrow, haha