iOS 沙盒按拍摄时间排序

http://blog.sina.com.cn/s/blog_6317728d0102v4jl.html

int intSort(id string2, id string1, void *locale)

{

    static NSStringCompareOptions comparisonOptions =

    NSCaseInsensitiveSearch | NSNumericSearch |

    NSWidthInsensitiveSearch | NSForcedOrderingSearch;    

    NSRange string1Range = NSMakeRange(0, [string1 length]);

    return [string1 compare:string2  options:comparisonOptions range:string1Range locale:(NSLocale *)locale];

}

-(void) updateList{

    {       

   NSArray* filename = [self getFilenamelistOfType:@"png"   fromDirPath:[Utilities documentsPath]];        

        NSArray *sortedArray; 

        sortedArray = [filename sortedArrayUsingFunction:intSort context:NULL];                        

        self.listData = sortedArray;

        [self.tableView reloadData];

    }

}

-(NSArray *) getFilenamelistOfType:(NSString *)type fromDirPath:(NSString *)dirPath

{

    NSArray *fileList = [[[NSFileManager defaultManager] contentsOfDirectoryAtPath:dirPath error:nil]

                         pathsMatchingExtensions:[NSArray arrayWithObject:type]];    

    return fileList;

}