屏幕适配方案之dimen适配

生成不同分辨率的dimen: values-1080x1920   values-2560x1440

如下:

<?xml version="1.0" encoding="utf-8"?>
<resources><dimen name="x1">1.0px</dimen>
<dimen name="x2">2.0px</dimen>
<dimen name="x3">3.0px</dimen>
<dimen name="x4">4.0px</dimen>
<dimen name="x5">5.0px</dimen>

生成方法:

 private static final String SUPPORT_DIMESION =
      "1920,1080;"
          + "2560,1440;";

  @Test
  public void main() {
    int baseW = 1920;
    int baseH = 1080;
    new GenerateValueFiles(baseW, baseH, SUPPORT_DIMESION).generate();
  }



package com.xincheng.lib.utils;

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

public class GenerateValueFiles {

  private int baseW;
  private int baseH;
  private String dirStr = "./res";
  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";

  /**
   * {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.supportStr = 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("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    sbForWidth.append("<resources>");
    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("</resources>");
    StringBuffer sbForHeight = new StringBuffer();
    sbForHeight.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    sbForHeight.append("<resources>");
    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("</resources>");

    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;
  }

}