iOS-沙盒目录

///沙盒路径
+ (NSString *)pathDocument{
    NSFileManager *fileManager = [[NSFileManager alloc]init];
    NSString *pathDocuments = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:];
    NSString *voiceDirectory = [pathDocuments stringByAppendingPathComponent:@"文件夹名"];
    ///判断是否有该文件夹
    if (![fileManager fileExistsAtPath:voiceDirectory]) {
        ///如果没有就新建该文件夹
        NSError *error = nil;
        [fileManager createDirectoryAtPath:voiceDirectory withIntermediateDirectories:YES attributes:nil error:&error];
        if (!error) {
            return nil;
        }
    }
    return voiceDirectory;
}