如何在UITextView中绘制文本 [英] How to draw text in UITextView

问题描述

如何在UITextView中绘制文本，就像在UILabel和UITextField中有一个名为drawTextInRect：的方法一样。我应该在drawRect：或drawLayer：inContext：中实现它。感谢您的关注和耐心！感谢您的关注和耐心！

How to draw text in UITextView just like there is a method called "drawTextInRect:" in UILabel and UITextField. Should I implement it in "drawRect:" or "drawLayer:inContext:". Thank your focus and patient! Thank your focus and patient!

推荐答案

您必须覆盖drawRect。阅读Apple文档中的详细信息。我发现这个简单的示例代码。



您必须调用setNeedsDisplay来触发绘图事件。

You must override drawRect. Read details in the Apple documentation. I found this simple example code.

You must call setNeedsDisplay to trigger an drawing event.

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