iphone - 在 NSDocumentDirectory 中删除

Question

我这样保存在 NSDocumentDirectory 中:

NSLog(@"%@", [info objectAtIndex:i]);
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,    NSUserDomainMask ,YES );
NSString *documentsDir = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDir stringByAppendingPathComponent:[NSString stringWithFormat:@"Images%d.png", i]];

ALAssetRepresentation *rep = [[info objectAtIndex: i] defaultRepresentation];
UIImage *image = [UIImage imageWithCGImage:[rep fullResolutionImage]];

//----resize the images
image = [self imageByScalingAndCroppingForSize:image toSize:CGSizeMake(256,256*image.size.height/image.size.width)];

NSData *imageData = UIImagePNGRepresentation(image);
[imageData writeToFile:savedImagePath atomically:YES];

我知道如何删除 NSDocumentDirectory 中的所有图像。

但我想知道如何删除名称为 oneSlotImages 的所有图像。

谢谢

Answer 1

试试这个，只需复制这段代码，您的名为 oneSlotImages 的图像将从 DocumentDirectory 中删除，这很简单:

NSArray *directoryContents =  [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] error:NULL];

    if([directoryContents count] > 0)
    {
        for (NSString *path in directoryContents)
        {
            NSString *fullPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingPathComponent:path];

            NSRange r =[fullPath rangeOfString:@"oneSlotImages"];
            if (r.location != NSNotFound || r.length == [@"oneSlotImages" length])
            {
                [[NSFileManager defaultManager] removeItemAtPath:fullPath error:nil];
            }
        }
    }