为电话号码格式化 EditText 视图

Format EditText view for phone numbers(为电话号码格式化 EditText 视图)

问题描述

我有一个 EditText 视图，我希望它将用户的输入格式化为电话号码格式.例如，当用户输入 1234567890 时，只要输入前 3 个数字，EditText 视图就会动态显示为(123) 456-7890".

I have an EditText view and I want it to format the user's input into the phone number format. For example, when the user types in 1234567890, the EditText view should dynamically show it as "(123) 456-7890" as soon as the first 3 numbers are inputted.

我在 OnCreate 中尝试了以下操作，但它似乎对我没有任何作用...

I tried the following in my OnCreate but it didn't seem to do anything for me...

EditText ET = (EditText) findViewById(R.id.add_number);
ET.addTextChangedListener(new PhoneNumberFormattingTextWatcher());

如何让用户的输入以电话号码格式显示?

How can I get the user's input to display in the phone number format?

推荐答案

我做了一个组合，我将输入类型修改为 phone，然后我使用正则表达式删除所有非数字字符: phonenumber = phonenumber.replaceAll("D", "");

I did a combination of things, i modified my input type to phone, then I used regex to remove all non numeric characters: phonenumber = phonenumber.replaceAll("D", "");

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