使用给定String验证EditText的有效方法 [英] Efficient way to validate EditText with a given String

问题描述

Hi Coders！



我正在开发一个应用程序，在其中向用户显示一条消息，在EditText中输入什么内容。如果用户没有输入消息中显示的内容，请让他/她删除错误。例如。我想让用户输入Hello World，同时输入Hello Qorld即他/她犯了错误，这样一条消息就会出现按退格键直到他到达Q然后消息将出现哪个字符要输入下一个即W.我试过玩数组和索引并尝试完成它但不能。提示/解决方案会很棒。我急需这方面的帮助。在此先感谢。

Hi Coders!

I'm working on an app in which I show a message to user what to type in an EditText. If user doesn't input what is shown in message, make him/her remove the mistakes. E.g. lets say I want user to type "Hello World" while he types "Hello Qorld" i.e. he/she made mistake so a message is going to appear to press backspace till he reaches Q and then message is going to appear which character to type next i.e. W. I've tried playing with arrays and indexes and trying to get it done but can't. A hint/solution would be great. I need help in this regard urgent and badly. Thanks in advance.

推荐答案

你应该看一下 EditText类 [ ^ ]，查看何时以及是否可以收到内容已更改的通知。此时，您可以将其输入与预期的字符串进行比较。

You should look at the methods and properties of the EditText class[^], to see when and if you can get a notification that the content has changed. At that point you can compare their typing to the expected string.

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