RichTextView An example to present the idea how to write a rich text view using Core Text. The rich text view can present picture , emoji , link and copy/paste text, omit text. RichTextView 富文本view,演示了多种元素的显示,如文本,emoji标签,本地图片,超链接,并实现省略多余行,拷贝粘贴交互。