我正在尝试在iPhone中从照片库中选择图片时获取照片拍摄日期。我正在使用下面的代码来做同样的事情。
NSDictionary* fileAttribs = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
NSDate *result = [fileAttribs fileCreationDate]; //or fileModificationDate
但它显示的是当前日期和时间。
有没有办法在从照片库中选择图片时获得照片拍摄日期。
您可以使用 ALAsset 检查图片的元数据
寻找关键ALAssetPropertyDate
编辑,完整代码:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSURL *url = [info objectForKey:@"UIImagePickerControllerReferenceURL"];
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:url
resultBlock:^(ALAsset *asset) {
NSDate *myDate = [asset valueForProperty:ALAssetPropertyDate];
NSLog(@"Date: %@", myDate);
} failureBlock:^(NSError *error) {
NSLog(@"Error");
}];
[picker dismissViewControllerAnimated:YES completion:nil];
}
ALAssetsLibrary 已被弃用,因此使用 PHAsset:
#import <Photos/PHAsset.h>
然后:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSURL *imageURL = [info valueForKey:UIImagePickerControllerReferenceURL];
PHAsset *phAsset = [[PHAsset fetchAssetsWithALAssetURLs:@[imageURL] options:nil] lastObject];
NSDate *date = [phAsset creationDate];
UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
}