屏幕适配工具类

public class GenerateValueFiles {
    private int baseW;
    private int baseH;


    private String dirStr = "./res";


    private final static String WTemplate = "{1}px\n";
    private final static String HTemplate = "{1}px\n";


    /**
     * {0}-HEIGHT
     */
    private final static String VALUE_TEMPLATE = "values-{0}x{1}";


    private static final String SUPPORT_DIMESION = "320,480;480,800;480,854;540,960;600,1024;720,1184;720,1196;720,1280;768,1024;800,1280;1080,1812;1080,1920;1440,2560;";


    private String supportStr = SUPPORT_DIMESION;


    public GenerateValueFiles(int baseX, int baseY, String supportStr) {
        this.baseW = baseX;
        this.baseH = baseY;


        if (!this.supportStr.contains(baseX + "," + baseY)) {
            this.supportStr += baseX + "," + baseY + ";";
        }


        this.supportStr += validateInput(supportStr);


        System.out.println(supportStr);


        File dir = new File(dirStr);
        if (!dir.exists()) {
            dir.mkdir();


        }
        System.out.println(dir.getAbsoluteFile());


    }


    /**
     * @param supportStr
     *            w,h_...w,h;
     * @return
     */
    private String validateInput(String supportStr) {
        StringBuffer sb = new StringBuffer();
        String[] vals = supportStr.split("_");
        int w = -1;
        int h = -1;
        String[] wh;
        for (String val : vals) {
            try {
                if (val == null || val.trim().length() == 0)
                    continue;


                wh = val.split(",");
                w = Integer.parseInt(wh[0]);
                h = Integer.parseInt(wh[1]);
            } catch (Exception e) {
                System.out.println("skip invalidate params : w,h = " + val);
                continue;
            }
            sb.append(w + "," + h + ";");
        }


        return sb.toString();
    }


    public void generate() {
        String[] vals = supportStr.split(";");
        for (String val : vals) {
            String[] wh = val.split(",");
            generateXmlFile(Integer.parseInt(wh[0]), Integer.parseInt(wh[1]));
        }


    }


    private void generateXmlFile(int w, int h) {


        StringBuffer sbForWidth = new StringBuffer();
        sbForWidth.append("\n");
        sbForWidth.append("");
        float cellw = w * 1.0f / baseW;


        System.out.println("width : " + w + "," + baseW + "," + cellw);
        for (int i = 1; i < baseW; i++) {
            sbForWidth.append(WTemplate.replace("{0}", i + "").replace("{1}",
                    change(cellw * i) + ""));
        }
        sbForWidth.append(WTemplate.replace("{0}", baseW + "").replace("{1}",
                w + ""));
        sbForWidth.append("");


        StringBuffer sbForHeight = new StringBuffer();
        sbForHeight.append("\n");
        sbForHeight.append("");
        float cellh = h *1.0f/ baseH;
        System.out.println("height : "+ h + "," + baseH + "," + cellh);
        for (int i = 1; i < baseH; i++) {
            sbForHeight.append(HTemplate.replace("{0}", i + "").replace("{1}",
                    change(cellh * i) + ""));
        }
        sbForHeight.append(HTemplate.replace("{0}", baseH + "").replace("{1}",
                h + ""));
        sbForHeight.append("");


        File fileDir = new File(dirStr + File.separator
                + VALUE_TEMPLATE.replace("{0}", h + "")//
                .replace("{1}", w + ""));
        fileDir.mkdir();


        File layxFile = new File(fileDir.getAbsolutePath(), "lay_x.xml");
        File layyFile = new File(fileDir.getAbsolutePath(), "lay_y.xml");
        try {
            PrintWriter pw = new PrintWriter(new FileOutputStream(layxFile));
            pw.print(sbForWidth.toString());
            pw.close();
            pw = new PrintWriter(new FileOutputStream(layyFile));
            pw.print(sbForHeight.toString());
            pw.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }


    public static float change(float a) {
        int temp = (int) (a * 100);
        return temp / 100f;
    }


    public static void main(String[] args) {
        int baseW = 320;
        int baseH = 480;
        String addition = "";
        try {
            if (args.length >= 3) {
                baseW = Integer.parseInt(args[0]);
                baseH = Integer.parseInt(args[1]);
                addition = args[2];
            } else if (args.length >= 2) {
                baseW = Integer.parseInt(args[0]);
                baseH = Integer.parseInt(args[1]);
            } else if (args.length >= 1) {
                addition = args[0];
            }
        } catch (NumberFormatException e) {


            System.err
                    .println("right input params : java -jar xxx.jar width height w,h_w,h_..._w,h;");
            e.printStackTrace();
            System.exit(-1);
        }


        new GenerateValueFiles(baseW, baseH, addition).generate();
    }

}

注意：执行此类后会再project下生成values-XX文件  将文件剪切到当前项目（例如app）下即可