如何使用Photos API在iOS 8.0中检索照片扩展(jpg / png)?

时间:2014-09-18 18:07:11

标签: ios8 photos photosframework

我试图在iOS 8中使用新的Photos API获取照片的文件扩展名,但直到现在还没有找到方法。在iOS 8.0之前,我会使用ALAssetRepresentation来获取文件扩展名,如:

// Get asset representation from asset
ALAssetRepresentation *assetRepresentation = [asset defaultRepresentation];

// Extract file extension from the original file name
NSString* fileExt = [[assetRepresentation filename] pathExtension];

现在有办法获取照片的文件扩展名吗? PS:我正在使用新的Photos API,因为我需要访问我的照片应用中的所有照片,而ALassetsLibrary只能访问“最近添加”的照片。

4 个答案:

答案 0 :(得分:12)

我知道了。

[[PHImageManager defaultManager] requestImageDataForAsset:asset options:imageRequestOptions resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {

        NSLog(@"info - %@", info);
    }];

PHImageFileDataKey = <PLXPCShMemData: 0x179ab6d0> bufferLength=1384448 dataLength=1384448;
PHImageFileOrientationKey = 1;
PHImageFileSandboxExtensionTokenKey = "c05e608acaf0bb212086ed2d512ccc97ea720ac3;00000000;00000000;0000001a;com.apple.app-sandbox.read;00000001;01000003;0000000000030b8c;/private/var/mobile/Media/DCIM/102APPLE/IMG_2607.JPG";
PHImageFileURLKey = "file:///var/mobile/Media/DCIM/102APPLE/IMG_2607.JPG";
PHImageFileUTIKey = "public.jpeg";
PHImageResultDeliveredImageFormatKey = 9999;
PHImageResultIsDegradedKey = 0;
PHImageResultIsInCloudKey = 0;
PHImageResultIsPlaceholderKey = 0;
PHImageResultWantedImageFormatKey = 9999;

答案 1 :(得分:2)

这是一种方法:

PHImageRequestOptions * imageRequestOptions = [[PHImageRequestOptions alloc] init];
imageRequestOptions.synchronous = YES;

[[PHImageManager defaultManager]
 requestImageForAsset:asset
 targetSize:CGSizeMake(2048, 2048)
 contentMode:PHImageContentModeAspectFit
 options:imageRequestOptions
 resultHandler:^(UIImage *result, NSDictionary *info) {
 }];

文件名包含在info中。例如:

PHImageFileURLKey = "file:///var/mobile/Media/DCIM/100APPLE/IMG_0066.JPG";

答案 2 :(得分:0)

** imageManager.requestImageDataForAsset((images [indexPath.row]为PHAsset),选项:PHImageRequestOptions(),resultHandler:{imagedata,dataUTI,Orientation,info in

var str:String =((((info as Dictionary)[“PHImageFileURLKey”])!as NSURL).lastPathComponent as String) cell.imageName.text = str as String **

答案 3 :(得分:0)

这些也是从照片中选择原始文件名的简单方法

PHAsset *asset; // Init this object with your PHAsset object 

//and then use below line 
NSLog(@"asset ext : %@",[[asset valueForKey:@"filename"] pathExtension]);