[UIKit] TextView

When a user taps a text view, a keyboard appears;

when a user taps Return in the keyboard, the keyboard disappears and the text view can handle the input in an application-specific way.

You can specify attributes, such as font, color, and alignment, that apply to all text in a text view.

基礎設定：

Editable — 可對TextView裡的文字進行edit

Selectable — 可Select TextView裡的文字

Data Detectors — 自動辨認TextView裡的文字，如有match的可變成連結，需要Selectable On，Editable Off才能生效

實驗：
- 網址成功
- 美國地址成功，香港英文地址成功，香港中文地址失敗 (據說調整手機地區設定可能會成功)
- 美國和香港航空公司的航班都失敗
- 電話號碼支持格式如圖

Keyboard:
Do not dismiss — 鍵盤不會dismiss
Dismiss on drag — 鍵盤drag的時候會dismiss
Dismiss interactively —暫時測到和on drag一樣，沒測出什麼區別

另外的Text三連星系列：

[UIKit] TextField

[UIKit] Label

Text三連星的區別：

• UILabel defines a label, which displays a static text string.
• UITextField defines a text field, which displays a single line of editable text.
• UITextView defines a text view, which displays multiple lines of editable text.

Displaying Text Content in iOS