是否可以通过UIActivityViewController共享图像并保留exif数据? [英] Is it possible to share an image via UIActivityViewController and retain exif data?
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问题描述
我有一个应用程序通过
[library writeImageToSavedPhotosAlbum:[newTestImage CGImage] metadata:metadata
completionBlock:^(NSURL *assetURL, NSError *error) {
//error
}
];
这很好,但是,我想允许用户从应用程序,我通过
This works fine, however, I would then like to allow the user to share these images from within the app, I was doing it via
ALAsset *assetToShare = self.images[indexPath.row];
NSString *stringToShare = @"…..";
NSArray *dataToShare = @[assetToShare, stringToShare];
UIActivityViewController *activityVC = [[UIActivityViewController alloc]
initWithActivityItems:dataToShare applicationActivities:nil];
[self presentViewController:activityVC animated:YES completion: ^{
//Some Expression
}];}
然而,在这样做,图像被删除所有exif数据,有没有办法我可以实现相同的功能,但保留元数据?非常感谢任何帮助。
However in doing so the image is stripped of all exif data, is there a way I can implement the same functionality but retain the metadata? Thanks very much for any assistance.
编辑:用于输入ALAssets的代码
Code used to enter ALAssets
if ([[group valueForProperty:ALAssetsGroupPropertyName] isEqualToString:@"my pics"]) {
[self.assetGroups addObject:group];
_displayArray = [self.assetGroups objectAtIndex:0]; ...}];
然后:
[_displayArray enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
if (result) {
[self.images addObject:result]; }];
推荐答案
只需传递实际图片。
ALAsset *assetToShare = self.images[indexPath.row];
ALAssetRepresentation *rep = [assetToShare defaultRepresentation];
UIImage *imageToShare = [UIImage imageWithCGImage:[rep fullResolutionImage]];
NSString *stringToShare = @"…..";
NSArray *dataToShare = @[imageToShare, stringToShare];
UIActivityViewController *activityVC = [[UIActivityViewController alloc]
initWithActivityItems:dataToShare applicationActivities:nil];
[self presentViewController:activityVC animated:YES completion: ^{
//Some Expression
}];}
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