重新加载部分时的异常

Question

当我重新加载一个部分时，从数组中删除最后一个对象并重新加载部分

NSIndexSet *indexSet = [[NSIndexSet alloc]initWithIndex:0];
 [_LYTPhotosUICreator.getTableViewInstance reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];

然后我有一个例外

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 1.  The number of rows contained in an existing section after the update (0) must be equal to the number of rows contained in that section before the update (4), plus or minus the number of rows inserted or deleted from that section (0 inserted, 0 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'

请让我知道我做错了什么。

Answer 1

Invalid update: invalid number of rows in section 1这意味着第1节当前数字为0，之前为4，但是，您现在更新第0部分。

Answer 2

试试这种方式。

[self.tableView beginUpdates];
// remove the objects from data source
// give the according row indexpaths
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:0 inSection:0];
[self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[self.tableView endUpdates];