Inserting UITableViewCell rows in begin/endUpdates block performance issue

Originator:bryanhenry
Number:rdar://7316174 Date Originated:12-Aug-2009 02:39 AM
Status:Open Resolved:
Product:iPhone SDK Product Version:3.0
Classification:Performance Reproducible:Always
 
Summary:
Attempting to insert rows in a -beginUpdates/-endUpdates block using -insertRowsAtIndexPaths:withRowAnimation: causes the UITableView's dataSource to be asked for cells for all inserted rows. This leads to a major performance hit while the dataSource object is creating the asked for cells in -tableView:cellForRowAtIndexPath. The performance is especially terrible when compared to something much less efficient, like -reloadData.

Comments

Radar number

Are you sure that this radar number is correct? I just submitted one and got 7201596, which is about 115,000 less than yours (but maybe they are not allocated strictly linearly, and rather depending on which backend server you end up)

By jmaebe at 2009-09-05 15:45:12.878486 (reply...)

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