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TTTableView shadow crash fix #755

merged 1 commit into from

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TTTableView with shadows (self.showTableShadows = YES) will cause a crash under iOS 5 when the user tries to scroll inside the table.

This crash happens because the layoutSubviews function tries to use the shadow layer after the layer was already removed and released. This is an issue in iOS 5, because layers are automatically released when removeFromSuperlayer is called.

The fix creates a new shadow layer after the original shadow layer is released and removed. Generally, a layer shouldn't be used after removeFromSuperlayer is called.

Closes #733 as well.

@aporat aporat referenced this pull request

TTableView Shadow Crash #733

@aporat aporat merged commit ff2fe77 into from
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Commits on Jan 20, 2012
  1. @aporat
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Showing with 3 additions and 1 deletion.
  1. +3 −1 src/Three20UI/Sources/TTTableView.m
4 src/Three20UI/Sources/TTTableView.m
@@ -258,7 +258,9 @@ - (void)layoutSubviews {
} else if (![[self.layer.sublayers objectAtIndex:0] isEqual:_originShadow]) {
[_originShadow removeFromSuperlayer];
- [self.layer insertSublayer:_originShadow atIndex:0];
+ _originShadow = [self shadowAsInverse:NO];
+ [self.layer insertSublayer:_originShadow atIndex:0];
[CATransaction begin];
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