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iOS TextView行数限制Swift代码示例

iOS TextView行数限制Swift代码示例

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对于 iOS 开发者来说，TextView 是一个不可或缺的控件，是在需要多行文本时。比如评论框、简介等场景，限制行数是个常见需求。这个教程主要教你如何在 Swift 中限制TextView的显示行数，让你的 UI 更加符合设计需求。通过计算文本的高度并与最大行数进行对比，你可以灵活地控制文本展示。比如，如果限制为 5 行，代码就会根据UIFont和行间距来精确计算最大显示高度，超出后可以截断或开启滚动功能。再加上实时更新文本，整个过程不仅简单，还能提高用户体验。操作起来也挺方便，简单几行代码就能搞定！

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zip 文件大小：52.81KB