Android屏幕适配工具类 Android自动生成不同分辨率的值

/**
 * Created by cdy on 2016/2/3. 
 * 快速生成适配工具类 ,直接运行不成功需手动放入目录文件中
 */
public class DimenTool {

 public static void gen() {
 //以此文件夹下的dimens.xml文件内容为初始值参照 
 File file = new File("./app/src/main/res/values/dimens.xml");

 BufferedReader reader = null;
 StringBuilder sw240 = new StringBuilder();
 StringBuilder sw320 = new StringBuilder();
 StringBuilder sw360 = new StringBuilder();
 StringBuilder sw480 = new StringBuilder();
 StringBuilder sw600 = new StringBuilder();
 StringBuilder sw720 = new StringBuilder();
 StringBuilder sw800 = new StringBuilder();
 StringBuilder w820 = new StringBuilder();

 try {

 System.out.println("生成不同分辨率：");

 reader = new BufferedReader(new FileReader(file));

 String tempString;

 int line = 1;

 // 一次读入一行，直到读入null为文件结束 

 while ((tempString = reader.readLine()) != null) {


 if (tempString.contains("</dimen>")) {

  //tempString = tempString.replaceAll(" ", ""); 

  String start = tempString.substring(0, tempString.indexOf(">") + 1);

  String end = tempString.substring(tempString.lastIndexOf("<") - 2);
  //截取<dimen></dimen>标签内的内容，从>右括号开始，到左括号减2，取得配置的数字 
  Double num = Double.parseDouble
  (tempString.substring(tempString.indexOf(">") + 1,
   tempString.indexOf("</dimen>") - 2));

  //根据不同的尺寸，计算新的值，拼接新的字符串，并且结尾处换行。 
  sw240.append(start).append( num * 0.75).append(end).append("rn");
  sw320.append(start).append( num * 1).append(end).append("rn");
  sw360.append(start).append( num * 1.125).append(end).append("rn");
  sw480.append(start).append(num * 1.5).append(end).append("rn");
  sw600.append(start).append(num * 1.87).append(end).append("rn");
  sw720.append(start).append(num * 2.25).append(end).append("rn");
  sw800.append(start).append(num * 2.5).append(end).append("rn");
  w820.append(start).append(num * 2.56).append(end).append("rn");


 } else {
  sw240.append(tempString).append("");
  sw320.append(tempString).append("");
  sw360.append(tempString).append("");
  sw480.append(tempString).append("");
  sw600.append(tempString).append("");
  sw720.append(tempString).append("");
  sw800.append(tempString).append("");
  w820.append(tempString).append("");

 }

 line++;

 }

 reader.close();
 System.out.println("<!-- sw240 -->");
 System.out.println(sw240);
 System.out.println("<!-- sw320 -->");
 System.out.println(sw320);
 System.out.println("<!-- sw360 -->");
 System.out.println(sw360);
 System.out.println("<!-- sw480 -->");
 System.out.println(sw480);
 System.out.println("<!-- sw600 -->");
 System.out.println(sw600);
 System.out.println("<!-- sw720 -->");
 System.out.println(sw720);
 System.out.println("<!-- sw800 -->");
 System.out.println(sw800);
 String sw240file = "./app/src/main/res/values-sw240dp/dimens.xml";
 String sw320file = "./app/src/main/res/values-sw320dp/dimens.xml";
 String sw360file = "./app/src/main/res/values-sw360dp/dimens.xml";
 String sw480file = "./app/src/main/res/values-sw480dp/dimens.xml";
 String sw600file = "./app/src/main/res/values-sw600dp/dimens.xml";
 String sw720file = "./app/src/main/res/values-sw720dp/dimens.xml";
 String sw800file = "./app/src/main/res/values-sw800dp/dimens.xml";

 String w820file = "./app/src/main/res/values-w820dp/dimens.xml";
 //将新的内容，写入到指定的文件中去 
 writeFile(sw240file, sw240.toString());
 writeFile(sw320file, sw320.toString());
 writeFile(sw360file, sw360.toString());
 writeFile(sw480file, sw480.toString());
 writeFile(sw600file, sw600.toString());
 writeFile(sw720file, sw720.toString());
 writeFile(sw800file, sw800.toString());
 writeFile(w820file, w820.toString());

 } catch (IOException e) {
 e.printStackTrace();

 } finally {

 if (reader != null) {
 try {

  reader.close();
 } catch (IOException e1) {
 e1.printStackTrace();

 }

 }

 }

 }


 /**
 * 写入方法 
 *
 */

public static void writeFile(String file, String text) {
 PrintWriter out = null;

 try {

 out = new PrintWriter(new BufferedWriter(new FileWriter(file)));
 out.println(text);
 } catch (IOException e) {

 e.printStackTrace();

 }


 out.close();
 }
 public static void main(String[] args) {
 gen();

 }

}