拍照在App中使用頻次高，入門級(jí)別直接調(diào)用系統(tǒng)拍照

• 思路：

  系統(tǒng)拍照使用UIImagePickerController

  1.設(shè)置下plist裆装，否則沒權(quán)限踱承，報(bào)錯(cuò)

  2.判斷攝像頭，獲取權(quán)限哨免，否則彈出界面黑著

  3.設(shè)置代理茎活，實(shí)現(xiàn)代理

  4.代理方法中獲取拍照的圖片/視頻

• 上菜

  • plist中添加Privacy - Camera Usage Description，文案根據(jù)App需要來

  • 權(quán)限

  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 
  
  }
  

  • 設(shè)置UIImagePickerController

  UIImagePickerController *vc = [[UIImagePickerController alloc] init];
  // 設(shè)置該屬性的時(shí)候琢唾，出現(xiàn)拍照與拍視頻選項(xiàng)
  vc.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
  vc.sourceType = UIImagePickerControllerSourceTypeCamera;
  vc.delegate = self;
  vc.allowsEditing = NO;
  // 設(shè)置攝像頭[后置攝像頭]
  vc.cameraDevice = UIImagePickerControllerCameraDeviceRear;
  // 設(shè)置閃光模式
  vc.cameraFlashMode = UIImagePickerControllerCameraFlashModeAuto;
  // 設(shè)置攝像頭模式
  vc.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo; // 當(dāng)該模式設(shè)置為video的時(shí)候载荔，meidaTypes設(shè)置出現(xiàn)拍照與拍視頻選項(xiàng)時(shí)，先展示video視頻拍攝選項(xiàng)
  // 錄制的最大時(shí)間
  vc.videoMaximumDuration = 10;
  // 視頻質(zhì)量
  vc.videoQuality = UIImagePickerControllerQualityTypeHigh;
  vc.modalPresentationStyle = UIModalPresentationFullScreen;
  [[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:vc
                                                                                   animated:YES
                                                                                 completion:nil];
  

  • 代理實(shí)現(xiàn)

  #pragma mark - UINavigationControllerDelegate, UIImagePickerControllerDelegate
  - (void)imagePickerController:(UIImagePickerController *)picker
  didFinishPickingMediaWithInfo:(NSDictionary<UIImagePickerControllerInfoKey,id> *)info {
      // 獲取選中資源類型
      NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
      if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) { // 拍照結(jié)果
          UIImage *image = nil;
          if (picker.allowsEditing) {
              image = [info objectForKey:UIImagePickerControllerEditedImage];
          } else {
              image = [info objectForKey:UIImagePickerControllerOriginalImage];
          }
          [picker dismissViewControllerAnimated:YES completion:nil];
      } else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) { // 視頻結(jié)果
          NSURL *url = [info objectForKey:UIImagePickerControllerMediaURL];
          // 視頻存放到系統(tǒng)相冊(cè)
          [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
              if (status == PHAuthorizationStatusAuthorized) {
                  [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
                             [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:url];
                         } completionHandler:^(BOOL success, NSError * error) {
                             if (success) {
                                 NSLog(@"保存視頻到相冊(cè)");
                             } else {
                                 NSLog(@"保存視頻到相冊(cè)失敳商摇：%@", error);
                             }
                         }];
              } else {
                  NSLog(@"無訪問相冊(cè)權(quán)限");
              }
              dispatch_async(dispatch_get_main_queue(), ^{
                  [picker dismissViewControllerAnimated:YES completion:nil];
              });
          }];
      }
  }
  
  - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
      [picker dismissViewControllerAnimated:YES completion:nil];
  }
  

• 結(jié)語：

  UIImagePickerController使用方便懒熙，可拍照、視頻普办。適用于拍照界面無定制工扎、簡(jiǎn)單取圖這類需求