在不重新加载 Tableview 的情况下，使用 Observer 更新已更改的索引单元格值 iOS Swift

Question

In the first time I collect the array values from API response and displayed it in tableview, again I will get the same response from socket and reload the values in table, But here I don't need to reload entire table, I want update the cell's which value has been changed.

Here Compare the two array's, from which index has changes, just need to update that index row cells only, without reload entire table view. old and new array , CodeSample

Answer 1

But you should be careful if will change some indexPaths in you data stack, if it gonna happen - use tableView.deleteRows or tableView.deleteSections . This updates should be qual in table and in dataStack or crash

let indexPaths = [IndexPath]()
tableView.performBatchUpdates {
    self.tableView.reloadRows(at: indexPaths, with: .none)
}

or

tableView.beginUpdates()
tableView.reloadRows(at: indexPaths, with: .none)
tableView.endUpdates()

btw, you can make your indexPaths to update like let indexPaths = tableView.indexPathsForVisibleRows - method's name is speechful, in case if you have socket I suppose it would be helpful since u've got dynamic