最近專案是做的國際化app，就需要多語言適配，每次都要將語言給翻譯公司，然後回來各國語言後，再進行復制貼上很是麻煩，因此站在了巨人的肩膀上寫了一個工具類

package com.example.lizhiqiang.kotlindemo;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

/**
 * 多語言適配
 * 使用方法resDirPath為專案res路徑  newResDirPath為新增語言資料夾
 * Created by lizhiqiang on 2018/7/20
 */
public class I18nUtils {
    private static final String TAG = "I18nUtils";

    public static void main(String[] args) {
        //if (args == null || args.length != 2) {
        //    System.out.println("不合法的引數");
        //    return;
        //}
        //        String resDirPath = args[0];
        //        String newResDirPath = args[1];
        String resDirPath = "/Users/lizhiqiang/Public/workspace//app/src/main/res";
        String newResDirPath = "/Users/lizhiqiang/Documents/android2.13";
        File newResDir = new File(newResDirPath);
        for (File file : newResDir.listFiles()) {
            if (!file.isDirectory()) continue;
            System.out.println(file.getName() + "...");
            if ("values".equals(file.getName())) {
                System.out.println("跳過 values 資料夾");
                continue;
            }// 跳過預設的資料夾
            File toFile = new File(resDirPath + "/" + file.getName() + "/strings.xml");
            if (!toFile.exists()) {
                System.out.println(toFile.getAbsolutePath() + "檔案不存在");
                continue;
            }
            String mergedContent = merge(getContent(toFile), getContent(getStringsXmlFile(file)));
            writeContent(toFile, mergedContent);
        }
    }

    private static String merge(String oldContent, String newContent) {
        int index = oldContent.lastIndexOf("</resources>");
        if (index > 0) {
            oldContent = oldContent.substring(0, index);
        }
        index = newContent.indexOf("<resources>");
        if (index > 0) {
            newContent = newContent.substring(index + "<resources>".length());
        }
        index = newContent.lastIndexOf("</resources>");
        if (index <= 0) {
            newContent += "</resources>";
        }
        //將 &gt; 替換為 >
        System.out.println(newContent);
        if (newContent.contains("&gt;")){
            newContent = newContent.replace("&gt;", '>'+ "");
        }
        //將 &lt;替換為 <
        if (newContent.contains("&lt;")){
            newContent = newContent.replace("&lt;", '<'+ "");
        }
        System.out.println(newContent);
        return oldContent + newContent;
    }

    private static File getStringsXmlFile(File dir) {
        for (File file : dir.listFiles()) {
            if (file.getName().endsWith(".xml")) return file;
        }
        return null;
    }

    private static String getContent(File file) {
        StringBuilder sb = new StringBuilder();
        BufferedReader bufferedReader = null;
        String tmp;
        try {
            bufferedReader = new BufferedReader(new FileReader(file));
            while ((tmp = bufferedReader.readLine()) != null) {
                sb.append(tmp).append(System.lineSeparator());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return sb.toString();
    }

    private static void writeContent(File file, String content) {
        BufferedWriter bufferedWriter = null;
        try {
            bufferedWriter = new BufferedWriter(new FileWriter(file));
            bufferedWriter.write(content);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (bufferedWriter != null) {
                try {
                    bufferedWriter.flush();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    bufferedWriter.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}