- (void)refresh {    MJRefreshGifHeader *header = [MJRefreshGifHeader headerWithRefreshingTarget:self refreshingAction:@selector(getData)];    NSMutableArray *images = [NSMutableArray array];    for (int i = 1; i < 17; i++) {        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"Load_%d", i]];        [images addObject:image];    }    // Set the ordinary state of animated images    [header setImages:images forState:MJRefreshStateIdle];    // Set the pulling state of animated images（Enter the status of refreshing as soon as loosen）    [header setImages:images forState:MJRefreshStatePulling];    // Set the refreshing state of animated images    [header setImages:images forState:MJRefreshStateRefreshing];    header.lastUpdatedTimeLabel.hidden = YES;    header.stateLabel.hidden = YES;    // Set header    self.tableview.mj_header = header;}