Android 屏幕适配方案

package com.etwod.www.yulequan;

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

/**
* Created by tianhongwei on 2015/12/16 0016.
*/
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.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;
}

public static void main(String[] args) {
int baseW = 320;
int baseH = 400;
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();
}
}