遍历指定目录下的文件，将复合条件的文件加载到列表(UITableView))

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- (void)viewDidLoad
{
    NSFileManager *fileManager = [[NSFileManager defaultManager] init];
    everyTitle = [[NSMutableArray alloc] init];
    NSArray *filePaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *filePath = [filePaths objectAtIndex:0];
//    NSLog(@"%@",filePath);
    NSDirectoryEnumerator *direnum = [fileManager enumeratorAtPath:filePath];
    //    NSMutableArray *array = [[NSMutableArray alloc] init];
    NSString *fileName;
    while ((fileName = [direnum nextObject])) {
        if([[fileName pathExtension] isEqualToString:@"pdf"]){

            NSArray *strings = [fileName componentsSeparatedByString:@"."];
            NSString *fileTitle = [strings objectAtIndex:[strings count]-2];

            [everyTitle addObject:fileTitle];

        }
    }

    uiController = [[UIViewController alloc] init];
    [uiController setTitle:@"目录"];

    navController = [[UINavigationController alloc] initWithRootViewController:uiController];
    navController.view.frame = CGRectMake(0, 0, 320, 460);
    [self.view addSubview:navController.view];

    self.uiController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(tableUpdata)];
//    
    self.uiController.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"刷新列表" style:UIBarButtonItemStyleBordered target:self action:@selector(tableUpdata)];

    tableView *tableViews = [[tableView alloc] initWithStyle:UITableViewStylePlain];
    tableViews.view.frame = CGRectMake(0, 45, 320, 460);
    [tableViews theValue:everyTitle];
    [self.view addSubview:tableViews.view];
//    [tableViews release];


}