Use the following UITableView
instance method:
- (void)reloadRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation
You have to specify an NSArray
of NSIndexPaths
that you want to reload. If you just want to reload. If you only want to reload one cell, then you can supply an NSArray
that only holds one NSIndexPath
. For example:
NSIndexPath* rowToReload = [NSIndexPath indexPathForRow:3 inSection:0];
NSArray* rowsToReload = [NSArray arrayWithObjects:rowToReload, nil];
[myUITableView reloadRowsAtIndexPaths:rowsToReload withRowAnimation:UITableViewRowAnimationNone];
You can see the UITableViewRowAnimation
enum for all the possible ways of animating the row refresh. If you don't want any animation then you can use the value UITableViewRowAnimationNone
, as in the example.
Reloading specific rows has a greater advantage than simply getting the animation effect that you'd like. You also get a huge performance boost because only the cells that you really need to be reloaded are have their data refreshed, repositioned and redrawn. Depending on the complexity of your cells, there can be quite an overhead each time you refresh a cell, so narrowing down the amount of refreshes you make is a necessary optimization that you should use wherever possible.
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