Update a row from table view where id='something' in Swift
I want to do something like update a tableCell productCounter = count where productId = 'iphone' from the app.
I was thinking to get all the index paths of the table, then check which cell has productID == 'iPhone' and update that. But I was just wondering if there is a better way to do this in Swift.
ios swift uitableview
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
add a comment |
I want to do something like update a tableCell productCounter = count where productId = 'iphone' from the app.
I was thinking to get all the index paths of the table, then check which cell has productID == 'iPhone' and update that. But I was just wondering if there is a better way to do this in Swift.
ios swift uitableview
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
tableView.visibleCells.map tableView.indexPath(for: $0)
– dengApro
Nov 14 '18 at 2:33
2
@dengApro Why not usetableView.indexPathsForVisibleRows?
– rmaddy
Nov 14 '18 at 4:46
add a comment |
I want to do something like update a tableCell productCounter = count where productId = 'iphone' from the app.
I was thinking to get all the index paths of the table, then check which cell has productID == 'iPhone' and update that. But I was just wondering if there is a better way to do this in Swift.
ios swift uitableview
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
I want to do something like update a tableCell productCounter = count where productId = 'iphone' from the app.
I was thinking to get all the index paths of the table, then check which cell has productID == 'iPhone' and update that. But I was just wondering if there is a better way to do this in Swift.
ios swift uitableview
ios swift uitableview
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
edited Nov 14 '18 at 2:07
rmaddy
243k27320382
243k27320382
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
asked Nov 14 '18 at 1:07
Meghalee GoswamiMeghalee Goswami
133
133
tableView.visibleCells.map tableView.indexPath(for: $0)
– dengApro
Nov 14 '18 at 2:33
2
@dengApro Why not usetableView.indexPathsForVisibleRows?
– rmaddy
Nov 14 '18 at 4:46
add a comment |
tableView.visibleCells.map tableView.indexPath(for: $0)
– dengApro
Nov 14 '18 at 2:33
2
@dengApro Why not usetableView.indexPathsForVisibleRows?
– rmaddy
Nov 14 '18 at 4:46
tableView.visibleCells.map tableView.indexPath(for: $0) – dengApro
Nov 14 '18 at 2:33
tableView.visibleCells.map tableView.indexPath(for: $0) – dengApro
Nov 14 '18 at 2:33
2
2
@dengApro Why not use
tableView.indexPathsForVisibleRows ?– rmaddy
Nov 14 '18 at 4:46
@dengApro Why not use
tableView.indexPathsForVisibleRows ?– rmaddy
Nov 14 '18 at 4:46
add a comment |
1 Answer
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Since you only need to update the visible cells, get the array of visible index paths from the table view. Then look at the corresponding data in your data model to find which ones match. Then tell the table view to reload just those matching index paths.
This is a more efficient solution than your basic idea since there is no need to check the data for rows that are not currently visible.
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Since you only need to update the visible cells, get the array of visible index paths from the table view. Then look at the corresponding data in your data model to find which ones match. Then tell the table view to reload just those matching index paths.
This is a more efficient solution than your basic idea since there is no need to check the data for rows that are not currently visible.
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
add a comment |
Since you only need to update the visible cells, get the array of visible index paths from the table view. Then look at the corresponding data in your data model to find which ones match. Then tell the table view to reload just those matching index paths.
This is a more efficient solution than your basic idea since there is no need to check the data for rows that are not currently visible.
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
add a comment |
Since you only need to update the visible cells, get the array of visible index paths from the table view. Then look at the corresponding data in your data model to find which ones match. Then tell the table view to reload just those matching index paths.
This is a more efficient solution than your basic idea since there is no need to check the data for rows that are not currently visible.
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
Since you only need to update the visible cells, get the array of visible index paths from the table view. Then look at the corresponding data in your data model to find which ones match. Then tell the table view to reload just those matching index paths.
This is a more efficient solution than your basic idea since there is no need to check the data for rows that are not currently visible.
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
answered Nov 14 '18 at 2:11
rmaddyrmaddy
243k27320382
243k27320382
add a comment |
add a comment |
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tableView.visibleCells.map tableView.indexPath(for: $0)– dengApro
Nov 14 '18 at 2:33
2
@dengApro Why not use
tableView.indexPathsForVisibleRows?– rmaddy
Nov 14 '18 at 4:46