Light gray background in “bounce area” of a UITableView

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Setting transparencies is bad for performance. What you want is the gray area above the search bar, but it should still be white beyond the end of the list.

You can add a subview to your UITableView that lives above the content instead.

CGRect frame = self.list.bounds;
frame.origin.y = -frame.size.height;
UIView* grayView = [[UIView alloc] initWithFrame:frame];
grayView.backgroundColor = [UIColor grayColor];
[self.listView addSubview:grayView];
[grayView release];

You could add more fancy stuff to the view if you like, perhaps a fade, or a divider line without subclassing UISearchBar.

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