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In my iPhone application I have a view with table view on it. I need to set opacity for some cell of the table. I have tried:

UIView *backView = [[UIView alloc] initWithFrame:CGRectZero];
                backView.backgroundColor = [UIColor whiteColor];
                tableViewCell.backgroundView = backView;
                tableViewCell.backgroundView.alpha = 0.6f;

But I still not see the background of the view under table. How can I fix this?

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3 回答 3

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你在哪里设置了背景 alpha？您是否尝试在 tableView:willDisplayCell:forRowAtIndexPath:方法中设置它？

于 2013-08-15T14:33:26.310 回答
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放backView.layer.opacity = 0.6f

于 2013-08-15T09:25:14.470 回答
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您还需要将表格视图的不透明度设置为0.6f

于 2013-08-15T10:21:14.693 回答