IOS tableView下拉刷新，上拉刷新（LOW）

1.故事板 换成tabaleview

self.names = [NSMutableArray array];

    self.names = [NSMutableArray arrayWithObjects:@"a",@"a",@"a",@"a",@"a", @"a",@"a",nil];

    UIRefreshControl *iv =[[UIRefreshControl alloc]init];

    [iv addTarget:self action:@selector(refreshAction) forControlEvents:UIControlEventValueChanged];

    self.refreshControl = iv;

 

-(void)refreshAction{

    NSLog(@"hehe");

    [self.names insertObject:@"X" atIndex:0];

    [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(backAction) userInfo:nil repeats:NO];

   

}

-(void)backAction{

    [self.tableView reloadData];

   

    [self.refreshControl endRefreshing];

}

 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

 

    // Return the number of rows in the section.

    return self.names.count;

   ;

}

 

 

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    UITableViewCell *cell= [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

   

    cell.textLabel.text = self.names[indexPath.row];

    if (indexPath.row == self.names.count-1) {

        for (int i=0; i<indexPath.row; i++) {

            [self.names addObject:[NSString stringWithFormat:@"%d",i]];

       }

        [self.tableView reloadData];

   }

    return cell;

}