enum {    UIImagePickerControllerSourceTypePhotoLibrary,      //在图片库中选取图片或者视频    UIImagePickerControllerSourceTypeCamera,            //用于拍摄照片或视频    UIImagePickerControllerSourceTypeSavedPhotosAlbum   //在相册中选取图片或视频 }; typedef NSUInteger UIImagePickerControllerSourceType;

enum {    UIImagePickerControllerCameraDeviceRear,  //后置摄像头    UIImagePickerControllerCameraDeviceFront  //前置摄像头 }; typedef NSUInteger UIImagePickerControllerCameraDevice;

enum {    UIImagePickerControllerCameraCaptureModePhoto,  //默认使用拍照模式    UIImagePickerControllerCameraCaptureModeVideo   //默认使用摄像模式 }; typedef NSUInteger UIImagePickerControllerCameraCaptureMode;

enum {    UIImagePickerControllerCameraFlashModeOff  = -1,    UIImagePickerControllerCameraFlashModeAuto = 0,    UIImagePickerControllerCameraFlashModeOn   = 1 }; typedef NSInteger UIImagePickerControllerCameraFlashMode;

// 用户选中图片之后的回调 - (void)imagePickerController: (UIImagePickerController *)picker didFinishPickingMediaWithInfo: (NSDictionary *)info  {      if (picker == picker_camera_)       {          //如果是 来自照相机的image，那么先保存          UIImage* original_image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];      } // info dictionary keys UIKIT_EXTERN NSString *const UIImagePickerControllerMediaType;      // an NSString (UTI, i.e. kUTTypeImage) UIKIT_EXTERN NSString *const UIImagePickerControllerOriginalImage;  // a UIImage UIKIT_EXTERN NSString *const UIImagePickerControllerEditedImage;    // a UIImage UIKIT_EXTERN NSString *const UIImagePickerControllerCropRect;       // an NSValue (CGRect) UIKIT_EXTERN NSString *const UIImagePickerControllerMediaURL;       // an NSURL UIKIT_EXTERN NSString *const UIImagePickerControllerReferenceURL    NS_AVAILABLE_IOS(4_1);  // an NSURL that references an asset in the AssetsLibrary framework UIKIT_EXTERN NSString *const UIImagePickerControllerMediaMetadata   NS_AVAILABLE_IOS(4_1);  // an NSDictionary containing metadata from a captured photo     // 获得编辑过的图片      UIImage* image = [info objectForKey: @"UIImagePickerControllerEditedImage"];      // 把图片转成NSData类型的数据来保存文件(存入到沙盒中)      NSData *imageData;      // 判断图片是不是png格式的文件      if (UIImagePNGRepresentation(image)) {          // 返回为png图像。          imageData = UIImagePNGRepresentation(image);     }else {         // 返回为JPEG图像         imageData = UIImageJPEGRepresentation(image, 1.0);      }     // 路径拼接,写入-----     NSString * imageSavePath = [[[HMTMySqliteDataHandle shareInstance]saveImagesPath] stringByAppendingPathComponent:@"自定义.自定义"];     [imageData writeToFile:imageSavePath atomically:YES];      // 关闭相册界面       [self dismissModalViewControllerAnimated:YES];      [picker release];  } // 用户选择取消  - (void) imagePickerControllerDidCancel: (UIImagePickerController *)picker  {      // 关闭相册界面     [self dismissModalViewControllerAnimated:YES];      [picker release];  }