属性

@property(nonatomic)           UIImagePickerControllerSourceType     sourceType

@property(nonatomic,copy)      NSArray                              *mediaTypes

@property(nonatomic)           NSTimeInterval                        videoMaximumDuration

@property(nonatomic)           UIImagePickerControllerQualityType    videoQuality

@property(nonatomic)           BOOL                                  showsCameraControls

@property(nonatomic,retain)    UIView                                *cameraOverlayView 

@property(nonatomic)           CGAffineTransform                     cameraViewTransform

@property(nonatomic) UIImagePickerControllerCameraCaptureMode cameraCaptureMode

@property(nonatomic) UIImagePickerControllerCameraDevice      cameraDevice

@property(nonatomic) UIImagePickerControllerCameraFlashMode   cameraFlashMode 

类方法

+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType

+ (NSArray *)availableMediaTypesForSourceType:(UIImagePickerControllerSourceType)sourceType

+ (BOOL)isCameraDeviceAvailable:(UIImagePickerControllerCameraDevice)cameraDevice

+ (BOOL)isFlashAvailableForCameraDevice:(UIImagePickerControllerCameraDevice)cameraDevice

+ (NSArray *)availableCaptureModesForCameraDevice:(UIImagePickerControllerCameraDevice)cameraDevice

对象方法

- (void)takePicture 

- (BOOL)startVideoCapture 

- (void)stopVideoCapture

代理方法

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

扩展方法（主要用于保存照片、视频到相簿）

UIImageWriteToSavedPhotosAlbum(UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo)