UIImagePickerController

1.基本类型

sourceType //设置资源获取类型

allowsEditing//是否允许图片编辑

2.基本方法

/**是否可以获取该类型资源*/

+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType; 

/**是否可以获取该类型相机（前置和后置 ）*/

+ (BOOL)isCameraDeviceAvailable:(UIImagePickerControllerCameraDevice)cameraDevice; 

/**是否可以获取闪光灯*/

+ (BOOL)isFlashAvailableForCameraDevice:(UIImagePickerControllerCameraDevice)cameraDevice;

3.代理方法

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

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;

/** 参数info中的键 */

NSString *const UIImagePickerControllerMediaType ;指定用户选择的媒体类型（文章最后进行扩展）

NSString *const  UIImagePickerControllerOriginalImage ;原始图片

NSString *const  UIImagePickerControllerEditedImage ;修改后的图片

NSString *const  UIImagePickerControllerCropRect ;裁剪尺寸

NSString *const  UIImagePickerControllerMediaURL ;媒体的URL

NSString *const  UIImagePickerControllerReferenceURL ;原件的URL

NSString *const  UIImagePickerControllerMediaMetadata;当来数据来源是照相机的时候这个值才有效

/** UIImagePickerControllerMediaType

*/UIImagePickerControllerMediaType 包含着KUTTypeImage 和KUTTypeMovie

KUTTypeImage 包含：

const CFStringRef  kUTTypeImage ;抽象的图片类型

const CFStringRef  kUTTypeJPEG ;

const CFStringRef  kUTTypeJPEG2000 ;

const CFStringRef  kUTTypeTIFF ;

const CFStringRef  kUTTypePICT ;

const CFStringRef  kUTTypeGIF ;

const CFStringRef  kUTTypePNG ;

const CFStringRef  kUTTypeQuickTimeImage ;

const CFStringRef  kUTTypeAppleICNS const CFStringRef kUTTypeBMP;

const CFStringRef  kUTTypeICO;

KUTTypeMovie 包含：

const CFStringRef kUTTypeAudiovisualContent ;抽象的声音视频

const CFStringRef kUTTypeMovie ;抽象的媒体格式（声音和视频）

const CFStringRef kUTTypeVideo ;只有视频没有声音

const CFStringRef kUTTypeAudio ;只有声音没有视频

const CFStringRef kUTTypeQuickTimeMovie ;

const CFStringRef kUTTypeMPEG ;

const CFStringRef kUTTypeMPEG4 ;

const CFStringRef kUTTypeMP3 ;

const CFStringRef kUTTypeMPEG4Audio ;

constCFStringRef kUTTypeAppleProtectedMPEG4Audio;