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iphoneiosuitableviewscrollcornerradius

UITableView cornerRadius with border performance issues on iOS

I have some interesting notice with scrolling performance on UITableView with cornerRadius, borderWidth and borderColor enabled.

self.tableView.layer.cornerRadius = 10.f;
self.tableView.layer.borderWidth = 1.0f;
self.tableView.layer.borderColor = [UIColor whiteColor].CGColor;

If I remove borderWidth and borderColor than scrolling gets 60 FPS no problem. As long as I add those two properties to layer FPS drops.

Does anyone have a suggestion or explanation why this strange behavior happens?

Many Thanks!

Solution

  • I just found out that cornerRadius with borderWidth sluggish tableView performance by a lot. So instead of 10.f radius I changed to 5.f and performance has increased amazingly. Still not perfect but noticeably better...