带尾部截断的 UIButton 多行文本

发布于 2024-10-25 14:54:54 字数 379 浏览 4 评论 0原文

我发现类似的问题询问如何在 UIButton 上显示多行文本，解决方案是设置

[myUIButton.titleLabel setLineBreakMode:UILineBreakModeWordWrap];
[myUIButton setTitle:myTitle forState:UIControlStateNormal];

然而，这会导致按钮标题占用多行。我尝试限制使用的行数

[myUIButton.titleLabel setNumberOfLines:2];

，但这对结果行数没有任何影响。

有没有办法将 UIButton 标题上的行字限制为 2 行，然后用“...”截断尾部？

原文

I have found similar questions that ask how to have multi-line text on a UIButton, and the solution is to set

[myUIButton.titleLabel setLineBreakMode:UILineBreakModeWordWrap];
[myUIButton setTitle:myTitle forState:UIControlStateNormal];

However, this results in the button title taking up many lines. I have tried restricting the number of lines using

[myUIButton.titleLabel setNumberOfLines:2];

but this does not have any affect on the resulting number of lines.

Is there a way to limit the lines word wrapped to 2 lines on the UIButton title, and then have the tail truncated with "..."?

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酒解孤独 2024-11-01 14:54:54

通过在 numberOfLines 之前设置 lineBreakMode 可以实现您想要的结果......
这是因为 lineBreakMode 似乎取消了 numberOfLines 设置，因此我们按此顺序执行。

Objective-C：

[button.titleLabel setLineBreakMode: UILineBreakModeTailTruncation];
[button.titleLabel setNumberOfLines:2];
[button setTitle:myTitle forState:UIControlStateNormal];

Swift 3：
从 Xcode 6 及更高版本开始，UILineBreakMode 被 NSLineBreakMode 替换

button.titleLabel?.lineBreakMode = NSLineBreakMode.byTruncatingTail
button.titleLabel?.numberOfLines = 2
button.setTitle(myTitle, for: UIControlState.normal)

By setting lineBreakMode before numberOfLines your desired result can be achieved…
This is because lineBreakMode seems to cancel out numberOfLines set hence we are doing it in this order.

Objective-C:

[button.titleLabel setLineBreakMode: UILineBreakModeTailTruncation];
[button.titleLabel setNumberOfLines:2];
[button setTitle:myTitle forState:UIControlStateNormal];

Swift 3:
from Xcode 6 and above UILineBreakMode is replaced by NSLineBreakMode

button.titleLabel?.lineBreakMode = NSLineBreakMode.byTruncatingTail
button.titleLabel?.numberOfLines = 2
button.setTitle(myTitle, for: UIControlState.normal)

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余生共白头 2024-11-01 14:54:54

我知道自从第一次提出这个问题以来已经有一段时间了，但我遇到了同样的问题，并在考虑发布的答案后最终得到了一个简单但实用的解决方案
此处。

解决方案对我有用的是以下内容：

// Set the line break mode to word wrap so it won't truncate automatically
[button.titleLabel setLineBreakMode: UILineBreakModeWordWrap];

// Call a method that truncates the string I want to use
[button setTitle:[self truncateString:myButtonText] forState:UIControlStateNormal];

和 truncateString 方法：

- (NSString *)truncateString:(NSString *)stringToTruncate
{
    if ([stringToTruncate length] > 50)
        stringToTruncate = [[stringToTruncate substringToIndex:50] stringByAppendingString:@"..."];

    return  stringToTruncate;
}

所以基本上我计算了适用于我的按钮的字符数，然后强制任何比该长度长的字符串末尾带有“...”。我知道这不是理想的解决方案，但我想它对我们中的一些人有用，我希望它有所帮助。

I know its been a while since the question was first asked, but I came across the same problem and endend up with a simple but functional solution after considering the answer posted
here.

The solution that worked for me was the following:

// Set the line break mode to word wrap so it won't truncate automatically
[button.titleLabel setLineBreakMode: UILineBreakModeWordWrap];

// Call a method that truncates the string I want to use
[button setTitle:[self truncateString:myButtonText] forState:UIControlStateNormal];

And the truncateString method:

- (NSString *)truncateString:(NSString *)stringToTruncate
{
    if ([stringToTruncate length] > 50)
        stringToTruncate = [[stringToTruncate substringToIndex:50] stringByAppendingString:@"..."];

    return  stringToTruncate;
}

So basically I calculated the number of characters that would work for my button, and then forced any string longer than that to have the '...' at the end. I know its not the ideal solution but I guess it can work for some of us, I hope it helps.

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你穿错了嫁妆 2024-11-01 14:54:54

[button.titleLabel setNumberOfLines:2];
[button.titleLabel setLineBreakMode: UILineBreakModeTailTruncation];
[button setTitle:myTitle forState:UIControlStateNormal];

它对我有用！：D
干杯！！

[button.titleLabel setNumberOfLines:2];
[button.titleLabel setLineBreakMode: UILineBreakModeTailTruncation];
[button setTitle:myTitle forState:UIControlStateNormal];

it does it for me! :D
cheers!!

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