你如何在 Android 上将 EditText 键盘设置为只包含数字? [英] How do you set the EditText keyboard to only consist of numbers on Android?

问题描述

我希望我的 EditText 显示一个键盘，该键盘仅有数字可见，没有其他字符.

I want my EditText to display a keyboard that ONLY has numbers visible, no other characters.

我已经用所有可用的输入进行了测试，但它不起作用.我寻找了一种方法来获得只有数字的键盘，但我只看到了对以下内容的引用:

I have tested with all available inputs and it doesn't work. I searched for a way to get a keyboard that only has numbers but I have only seen references to:

android: inputType = "numberPassword"

但我希望数字是可见的，像这样:(numberPassword)

But I want the numbers to be visible, like this: (numberPassword)

我尝试过:

android:digits="0123456789"
android:inputType="phone"

和

android:inputType="number"

但它看起来像这样:

推荐答案

经过多次尝试，我明白了！我像这样以编程方式设置键盘值:

After several tries, I got it! I'm setting the keyboard values programmatically like this:

myEditText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);

或者，如果您愿意，您可以像这样编辑 XML:

Or if you want you can edit the XML like so:

android: inputType = "numberPassword"

两个配置都会显示密码项目符号，因此我们需要创建一个自定义的ClickableSpan 类:

Both configs will display password bullets, so we need to create a custom ClickableSpan class:

private class NumericKeyBoardTransformationMethod extends PasswordTransformationMethod {
    @Override
    public CharSequence getTransformation(CharSequence source, View view) {
        return source;
    }
}

最后我们需要在 EditText 上实现它，以便显示输入的字符.

Finally we need to implement it on the EditText in order to display the characters typed.

myEditText.setTransformationMethod(new NumericKeyBoardTransformationMethod());

我的键盘现在是这样的:

This is how my keyboard looks like now:

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