如何在 android EditText 中强制使用英文键盘

问题描述

我知道如何强制输入数字、文本等，但是如果我的数据库字段只能接受英文字符，是否有一个标志或 IME 选项让我强制 EditText 只接受某些语言，如英语?当然，我可以检查并通知用户输入错误，但这并不完全是用户友好的......

I know how to force numbers, texts etc.., but is there a flag or IME options for me to force the EditText to accept only certain language like English in case my DB fields can accept only English characters? of course I can check and notify the users on bad input but that's not exactly user friendly....

在 EditText 上实现我自己的过滤器也是可能的，但我不确定它是否会强制键盘布局本身使用我需要的语言.

Implementing my own filter on the EditText might also be possible but I'm not sure it will force the keyboard layout itself to be in the language I need.

有什么想法吗?

推荐答案

无论如何你都应该过滤输入.强制英文键盘不会强制用户只使用英文字母.用户仍然可以长按字符或使用非英文硬件键盘.

You should probably filter the input anyways. Forcing English keyboard doesn't force user to use only English letters. User can still long press a character or have a non-english hardware keyboard.

您可以收听文本更改事件并拒绝此时您的数据库不接受的所有字符.

You could listen to text change events and reject all characters that are not accepted by your DB at that point.

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