问题描述
我有以下代码...
UILabel *buttonLabel = [[UILabel alloc] initWithFrame:targetButton.bounds];
buttonLabel.text = @"Long text string";
[targetButton addSubview:buttonLabel];
[targetButton bringSubviewToFront:buttonLabel];
...我的想法是我可以有多行文本的按钮,总是被UIButton的backgroundImage隐藏。用于显示按钮的子视图的日志调用显示已添加UILabel,但无法查看文本本身。
...the idea being that I can have multi-line text for the button, but the text is always obscured by the backgroundImage of the UIButton. A logging call to show the subviews of the button shows that the UILabel has been added, but the text itself cannot be seen. Is this a bug in UIButton or am I doing something wrong?
推荐答案
对于iOS 6及更高版本,请使用以下语言允许多行:
button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
// you probably want to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you want to
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];
对于iOS 5及以下版本,使用以下操作允许多行: / p>
For iOS 5 and below use the following to allow multiple lines:
button.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
// you probably want to center it
button.titleLabel.textAlignment = UITextAlignmentCenter;
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];
对于iOS9 forward ,
一般,只需选择属性文本,然后选择字符换行(或任何模式首选)。
generally, simply choose "Attributed Text" and then select "character wrap" (or whatever mode preferred).
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