iOS开发 删除cell防止crash

删除cell时添加判断防止crash

//删除成功

- (void)couponsRequestDidSuccess{
    NSMutableIndexSet * indeSet = [[NSMutableIndexSet alloc]init];
    //判断可不可以删除，避免crash
    BOOL canDelete =YES;
    for(NSIndexPath * index in self.selectCell) {

        if([self.tableView numberOfRowsInSection:0] < index.row || [self.allCouponsArray objectAtIndex:index.row] ==nil) {

            canDelete =NO;

        }else{

            [indeSet addIndex:index.row];

        }

    }

    if(canDelete) {//可以删除

        [self.allCouponsArray removeObjectsAtIndexes:indeSet];

        [self.tableView deleteRowsAtIndexPaths:self.selectCell withRowAnimation:UITableViewRowAnimationMiddle];

    }

    [self.selectCell removeAllObjects];

    [self.tableView reloadData];

}