1.判断相机是否可用

• (BOOL) isCameravail{
  return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
  }
  2.赏光灯是否可用
• (BOOL) isCameraFlashavail{
  //前置摄像头
  return [UIImagePickerController isFlashAvailableForCameraDevice:
  UIImagePickerControllerCameraDeviceFront];
  //后置摄像头
  return [UIImagePickerController isFlashAvailableForCameraDevice:UIImagePickerControllerCameraDeviceRear];
  }
  3.摄像头是否可用
• (BOOL) isCameraavail{
  //前置摄像头
  return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront];
  //后置摄像头
  return [UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceRear];
  }
  4.判断当前的摄像头支持媒体类型照片OR录像
  //拍照
  if([self cameraSupportMedia:(_bridge NSString*) KUTTypeImage]){

}
//录像
if([self cameraSupportMedia:(_bridge NSString*) KUTTypeMovie]){

}

• (BOOL) cameraSupportMedia: (NSString )paraMediaType{
  NSArray avaiableMedia = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
  for (NSString *item in avaiableMedia) {
  if ([item isEqualToString:paraMediaType]) {
  return true;
  }
  }

  return false;
  }