使 Enum.toString() 本地化 [英] Make Enum.toString() localized

问题描述

我正在开发一个 Android 应用程序，我想知道我是否可以设置 Enum.toString() 多语言.

I'm developing an Android application and I want to know if I can set Enum.toString() multilanguage.

我将在 Spinner 上使用这个 Enum 并且我想使用多语言文本.

I'm going to use this Enum on a Spinner and I want to use multi language texts.

public class Types
{
    public enum Stature
    {
        tall (0, "tall"),
        average(1, "average"),
        small(2, "small");

        private final int stature;
        private final String statureString;

        Stature(int anStature, String anStatureString) { stature = anStature; statureString = anStatureString; }

        public int getValue() { return stature; }

        @Override
        public String toString() { return statureString; }
    }
}

我不知道如何在 Enum 中使用 Context.getString()，我已经硬编码了高"、平均"和小"来测试它.我已经在帮助类中定义了 enum.

I don't know how to use Context.getString() inside an Enum, and I have hardcoded "tall", "average" and "small" to test it. I have defined that enum inside on a helper class.

这是我在 Spinner 上使用 enum 的方式:

This how I use the enum on a Spinner:

mSpinStature.setAdapter(new ArrayAdapter<Stature>(mActivity, android.R.layout.simple_dropdown_item_1line, Stature.values()));

你知道我该怎么做吗?

推荐答案

假设此资源路径

String resourceBundlePath = "my.package.bundles.messages"

在包 my.package.bundles 中，您可能有 messages.properties、messages_en_US.properties 等

In package my.package.bundles you may have messages.properties, messages_en_US.properties etc.

然后，使用

ResourceBundle resourceBundle = ResourceBundle.getBundle(resourceBundlePath);
String messageKey = "myFirstMessage";
String message = resourceBundle.getMessage(messageKey);

message 将包含在 messages.properties 上定义的 messageKey 属性的值.如果当前的 Locale 实际上是 en_US，您将从 messages_en_US.properties 获取值.如果当前语言环境是您没有的属性文件，则该值将来自默认的 messages.properties

message will contain the value of the messageKey property defined on messages.properties. If the current Locale is actually en_US you will get the value from messages_en_US.properties. If the current locale is something you do not have a properties file for the value will be from the default messages.properties

你也可以打电话

ResourceBundle.getBundle(resourceBundlePath, myLocale);

但通常最好使用平台语言环境(查看 jvm 参数 -Duser.language, -Duser.country)

but it is generally better to use the platform locale (have a look at jvm arguments -Duser.language, -Duser.country)

您可以为每个要翻译的枚举使用一个 ResourceBundle，键是枚举元素名称，并在枚举的 toString() 实现中使用它:

You can have a ResourceBundle for each enum you want to translate with keys the enum element names and use it in the toString() implementation of your enum:

@Override
public String toString() {
return resourceBudle.getString(super.toString());
}

这篇关于使 Enum.toString() 本地化的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！