ios UIActionSheet

UIActionSheet *uisheet=[[UIActionSheet alloc]initwithtititle:delegete:canclebutton:

destructiveButtonTitle:otherbuttontitles:,nil];

]

UIimagePickerController:

allwoEditing

SourceType:

UIImagePickerControllerSourceTypeCamera

UIImagePickerControllerSourceTypePhotoLibraryMediaTypoe:kUITypeImagekUITypeMovie

UIImage  *img = [info objectForKey:UIImagePickerControllerEditedImage];
self.fileData = UIImageJPEGRepresentation(img, 1.0);//

  NSString *videoPath = [[info objectForKey:UIImagePickerControllerMediaURL] path];  self.fileData = [NSData dataWithContentsOfFile:videoPath];

iOS 获取图片（拍照，图库，相册）

时间 2014-09-23 09:55:25 CSDN博客原文 http://blog.csdn.net/u010123208/article/details/39493535

iOS 获取图片有三种方法

1 直接调用摄像头拍照

2 从相册中选择

3 从图库中选择

UIImagePickerController 是系统提供的用来获取图片和视频的接口；

用UIImagePickerController 类来获取图片视频；

大体分为以下几个步骤：

初始化UIImagePickerController 类
设置UIImagePickerController 实例的数据来源类型（下面解释）；
设置设置代理
如果需要做图片修改的话设置 allowsEditing =yes

数据来源类型一共有三种：

enum {
   UIImagePickerControllerSourceTypePhotoLibrary ,//来自图库
   UIImagePickerControllerSourceTypeCamera ,//来自相机
   UIImagePickerControllerSourceTypeSavedPhotosAlbum //来自相册
};

在用这些来源的时候最好检测以下设备是否支持；

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
  {
    NSLog(@"支持相机");
  }
  if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
  {
    NSLog(@"支持图库");
  }
  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum])
  {
    NSLog(@"支持相片库");
  }

调用摄像头来获取资源

- (void)viewDidLoad {
  [super viewDidLoad];
  picker = [[UIImagePickerController alloc]init];
  picker.view.backgroundColor = [UIColor orangeColor];
  UIImagePickerControllerSourceType sourcheType = UIImagePickerControllerSourceTypeCamera;
  picker.sourceType = sourcheType;
  picker.delegate = self;
  picker.allowsEditing = YES;
}

上面只是实例了UIImagePickerController及其属性在需要获取图片的时候需要弹出窗口调用

[self presentViewController:picker animated:YES completion:nil];

我们还需要代理来获取我们选中的图片

UIImagePickerControllerDelegate

代理中一共三个方法其中一个3.0 已经废弃了，只剩下两个我们需要用的

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

当用户选取完成后调用；

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

当用户取消选取时调用；

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

选取的信息都在info中

info 是一个字典

字典中得键

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

UIImagePickerController 的更多参数参考http://blog.sina.com.cn/s/blog_68edaff101019ppe.html

代理中得功能参考 http://bbs.9ria.com/forum.php?mod=viewthread&tid=244453

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 ;
const CFStringRef  kUTTypeAppleProtectedMPEG4Audio;

来源：https://www.cnblogs.com/ruiying/p/4156248.html

标签

const

nsstring

UISheet 和UIImageController

iOS 获取图片（拍照，图库，相册）