Question

我正在尝试从iPhone中的照片库中选择照片时拍照。我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

但它显示当前的日期和时间。

从照片库中选择照片时，有没有办法拍摄照片。

Answer 1

您可以使用ALAsset

检查图片的元数据

查找密钥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];

}

Answer 2

不推荐使用ALAssetsLibrary，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];

}

如何在目标c中获取照片创建日期

2 个答案: