iOS開發：tableview位置錯亂和位移及回到原來位置，iostableview

iOS開發：tableview位置錯亂和位移及回到原來位置，iostableview

上拉重新整理後探索資料位置錯亂?tableview的位移不對?比如資料一共有40條,一次載入20條,正常應該顯示在第21條,上拉時載入後發現tableview停在了第11條或者30幾條,如果你發生了和我一樣的情況,那看這裡

- (void)addRefresh {__weak typeof (self) weakSelf = self;weakSelf.nomalTable.mj_header =  [MJRefreshNormalHeader headerWithRefreshingBlock:^{    weakSelf.page = @"0";    [weakSelf tableReloadCtrlWithPage];}];weakSelf.nomalTable.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{    NSInteger index = [self.page intValue];    index += 1;    weakSelf.page = [NSString stringWithFormat:@"%ld",(long)index];    [weakSelf tableReloadCtrlWithPage];}];[weakSelf.nomalTable.mj_header beginRefreshing];} // 這裡的page指的是分頁頁數 // 當為if page == 1 else page += 1  - (void)tableReloadCtrlWithPage {    [self.nomalTable reloadData];if (!self.dataArr.count?YES:NO) {    self.nomalTable.tableFooterView = [self getTableFootView:self.nomalTable.bounds str:@"nodata"];}else{    self.nomalTable.tableFooterView = [UIView new];}NSInteger oldCnt = [self.dataArr count];if (oldCnt > 0 && [self.page intValue] != 0) {    NSInteger row = oldCnt - 20;    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:0];    [self.nomalTable scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];}}