iOS - 如何使用占位符文本创建 UITextView？
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iOS - How do I create a UITextView with placeholder text?
提问by DuckDucking
Possible Duplicate:
Placeholder in UITextView
可能的重复：
UITextView 中的占位符
I am relatively new to iOS and I don't know how to call this in english, but I want to create some UITextViewsthat contain instructions or pre filled text, like "type your name here", or "type your phone", etc, written in light color text but when the user selected the text view to start typing the hints they contain vanish.
我对 iOS 比较陌生，我不知道如何用英语称呼它，但我想创建一些UITextViews包含说明或预填充文本的内容，例如“在此处输入您的姓名”或“输入您的电话”等，以浅色文本书写，但当用户选择文本视图开始输入提示时，它们包含的提示消失。
Is there any example/tutorial etc. I can follow to learn more about it?
是否有任何示例/教程等。我可以关注以了解更多信息？
How do I do that in iOS?
我如何在 iOS 中做到这一点？
回答by shabbirv
There are many ways to do this.
有很多方法可以做到这一点。
Approach #1: UITextView does not have a property for placeholder so you'd have to set the text property to the instructions you would like to have and then as soon as the user taps the UITextView clear it out.
方法#1：UITextView 没有占位符的属性，因此您必须将 text 属性设置为您想要的说明，然后一旦用户点击 UITextView 将其清除。
Approach #2 There is a subclass of UITextViewthat someone made that adds a Placeholder property
方法#2 有一个UITextView的子类，它是某人创建的，它添加了一个 Placeholder 属性
回答by Neil
Maybe you are looking for a UITextField.
也许您正在寻找 UITextField。
UITextFields are the more appropriate thing for this method. Then you may use the "placeholder" property to change the greyed-out text.
UITextFields 更适合这种方法。然后您可以使用“占位符”属性来更改灰色文本。
