android 用java写一个自动适配各种屏幕大小的工具

android 用java写一个自动适配各种屏幕大小的工具，假设我当前机器屏幕宽高为1920*1116，我页面某个组件的宽度为100px,那么在1280*800的机器上，按道理将应该是100/1920*1280=66.66px,那么讲道理思路就来了，如果我在1920*1116适配了，那么宽按照1280/1920，高按照800/1116换算不就可以了吗？

难点：写配置文件

1.在应用资源文件下形成文件，比如我当前机器为1920*1116，我想1280*800也能用，就是两个文件夹：values-1920x1116,values-1280x800

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

  System.out.print("TEST::"+w+"?"+h);
        File fileDir = new File(dirStr + File.separator
                + VALUE_TEMPLATE.replace("{0}", w + "")//
                .replace("{1}", h + ""));
        fileDir.mkdir();

2,如果当前我的机器为1920*1116，那么我的values-1920x1116里就应该有横向的适配文件和纵向的适配文件，

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

 private void generateXmlFile(int w, int h) {

        StringBuffer sbForWidth = new StringBuffer();
        sbForWidth.append("{C}\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("{C}\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("");



        System.out.print("TEST::"+w+"?"+h);
        File fileDir = new File(dirStr + File.separator
                + VALUE_TEMPLATE.replace("{0}", w + "")//
                .replace("{1}", h + ""));
        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();
        }
    }

附件:

package com.wyt.hcy.customviewtestdemo;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;

/**
 * created by hcy 
 */
public class WytCreateValueFiles {

    private int baseW;
    private int baseH;

    private String dirStr = "./app/src/main/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 = "1920,1116;";

    private String supportStr = SUPPORT_DIMESION;

    public WytCreateValueFiles(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("{C}\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("{C}\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("");



        System.out.print("TEST::"+w+"?"+h);
        File fileDir = new File(dirStr + File.separator
                + VALUE_TEMPLATE.replace("{0}", w + "")//
                .replace("{1}", h + ""));
        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;
    }

    /**
     *
     * @param args
     */

    public static void main(String[] args) {
        //当前屏幕宽高
        int baseW = 1280;
        int baseH = 800;
        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 WytCreateValueFiles(baseW, baseH, addition).generate();
    }

}

使用：如果当前机器为1280x800,那么就在

 public static void main(String[] args) {
        //当前屏幕宽高
        int baseW = 1280;
        int baseH = 800;
        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 WytCreateValueFiles(baseW, baseH, addition).generate();
    }

我想适配1920*1116

private static final String SUPPORT_DIMESION = "1920,1116;1024,600;";

运行就会在app/src/main/res 下生成文件

    private String dirStr = "./app/src/main/res";

然后替换布局文件将

横向x纵向y