一.屏幕适配

用eclipse生成一个文件
路径：E:\Jar_bag\屏幕适配

public class MakeXml {
     private final static String rootPath = "E:\\Jar_bag\\屏幕适配\\values-{0}x{1}\\";

         //基准的像素 可以修改
            private final static float dw = 375f;
            private final static float dh = 667f;

            private final static String WTemplate = "<dimen name=\"x{0}\">{1}px</dimen>\n";
            private final static String HTemplate = "<dimen name=\"y{0}\">{1}px</dimen>\n";

            public static void main(String[] args) {
                makeString(320, 480);
                makeString(480,800);
                makeString(480, 854);
                makeString(540, 960);
                makeString(600, 1024);
                makeString(720, 1184);
                makeString(720, 1196);
                makeString(720, 1280);
                makeString(768, 1024);
                makeString(800, 1280);
                makeString(1080, 1812);
                makeString(1080, 1920);
                makeString(1440, 2560);
            }

            public static void makeString(int w, int h) {

                StringBuffer sb = new StringBuffer();
                sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
                sb.append("<resources>");
                float cellw = w / dw;
                for (int i = 1; i < dw; i++) {
                    sb.append(WTemplate.replace("{0}", i + "").replace("{1}",
                            change(cellw * i) + ""));
                }
                sb.append(WTemplate.replace("{0}", String.valueOf((int)dw)).replace("{1}", w + ""));
                sb.append("</resources>");

                StringBuffer sb2 = new StringBuffer();
                sb2.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
                sb2.append("<resources>");
                float cellh = h / dh;
                for (int i = 1; i < dh; i++) {
                    sb2.append(HTemplate.replace("{0}", i + "").replace("{1}",
                            change(cellh * i) + ""));
                }
                sb2.append(HTemplate.replace("{0}", String.valueOf((int)dh)).replace("{1}", h + ""));
                sb2.append("</resources>");

                String path = rootPath.replace("{0}", h + "").replace("{1}", w + "");
                File rootFile = new File(path);
                if (!rootFile.exists()) {
                    rootFile.mkdirs();
                }
                File layxFile = new File(path + "lay_x.xml");
                File layyFile = new File(path + "lay_y.xml");
                try {
                    PrintWriter pw = new PrintWriter(new FileOutputStream(layxFile));
                    pw.print(sb.toString());
                    pw.close();
                    pw = new PrintWriter(new FileOutputStream(layyFile));
                    pw.print(sb2.toString());
                    pw.close();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }

            }

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