1.如果是才开始做项目，已经有设计图：720*1280
1).默认values文件夹：1dp=1px
values/dimens_x.xml：
name: x1~x720 value:1px~720px
<dimen name="x1">1.0px</dimen>
values/dimens_y.xml
name: y1~y1280 value:1px~1280px
<dimen name="y1">1.0px</dimen>
2).720*1280像素对应的values-w720dp文件: 1dp=2px
values-w720dp/dimens_x.xml:
name: x1~x720 value:2px~1440px
<dimen name="x1">2.0px</dimen>
values-w720dp/dimens_y.xml
name: y1~y1280 value:2px~2560px
<dimen name="y1">2.0px</dimen>
2).1080*1920像素对应的values-w1080dp文件: 【以720*1280位基准数作倍数换算】
values-w1080dp/dimens_x.xml:
name: x1~x720 value:3px~1080px Width:1080 baseW:720
<dimen name="x1">3.0px</dimen> 倍数换算：倍数=Width/baseW=1080/720=1.5 value=1.5*2px=3.0px
values-w1080dp/dimens_y.xml：
name: y1~y1280 value:3px~3840px Height:1920 baseH:1280
<dimen name="y1">3px</dimen> 倍数换算：倍数=Height/baseH=1920/1280=1.5 value=1.5*2px=3.0px
备注：
1.倍数即屏幕像素密度：例子中用的是常用的手机像素密度，但市面上手机像素密度参差不齐，跟你测试的实际手机像素密度可能不一样，但一般用常用的像素密度来换算
2.若以dp为单位
1).values下的文件，如下：
values/dimens_x.xml
name: x1~x720 value:1.0dp~720.0dp
<dimen name="x1">1.0dp</dimen>
......
<dimen name="x720">720.0dp</dimen>
values/dimens_y.xml
name:y1~y1280 value:1dp~1280.0dp
<dimen name="y1">1dp</dimen>
......
<dimen name="y1280">1280.0dp</dimen>
2).values-w720dp下，如下：
values-w720dp/dimens_x.xml
name: x1~x720 value:0.5dp~360.0dp
<dimen name="x1">0.5dp</dimen>
......
<dimen name="x720">360.0dp</dimen>
values-720dp/dimens_y.xml
name:y1~y1280 value:0.5dp~640.0dp
<dimen name="y1">0.5dp</dimen>
......
<dimen name="y1280">640.0dp</dimen>
2.项目完成之后，则将values下面的dimens.xml 文件
按照不同分辩率的手机生成对应倍数的不同像素的dimens.xml文件
eg：以720*1280为例子
values/dimens.xml ：1dp=1px
<dimen name="x1">1dp</dimen>
values-w720dp/dimens.xml ： 【720*1280】
<dimen name="x1">0.5dp</dimen> 倍数换算： 1dp=2px 720px=360dp 倍数=360/720=0.5
values-w1080dp/dimens.xml ： 【1080*1920】
<dimen name="x1">0.75dp</dimen> 倍数换算【以720作基准】：1080/720*0.5=0.75dp
附：自动生成dimens.xml的代码：
1.项目才开始，生成竖屏的代码
package com.charlie.volley.utils;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
/**
* 屏幕适配，自动生成dimens.xml
* @author Charlie
*
*/
public class GenerateValueFiles {
private int baseW;
private int baseH;
private String dirStr = "./res";
private final static String WTemplate = "<dimen name=\"x{0}\">{1}dp</dimen>\n";
private final static String HTemplate = "<dimen name=\"y{0}\">{1}dp</dimen>\n";
/**
* {0}-HEIGHT
*/
private final static String VALUE_TEMPLATE = "values-{0}x{1}";
private final static String VALUE_TEMPLATE1 = "values";
private static final String SUPPORT_DIMESION = "720,1280;1536,2048;1080,1920";
/**
* 单位为px:倍数与屏幕分辨率有关，2.0f对应屏幕像素为：720*1280，生成的文件对应放在values-w720dp下面
* 单位为dp：multiple=0.5f，对应屏幕像素为：720*1280，生成的文件对应放在values-w720dp下面
*/
private final static float multiple=0.5f;
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(",");
if(Integer.parseInt(wh[0])==baseW){
float multiple=1.0f;
generateBaseXmlFile(Integer.parseInt(wh[0]), Integer.parseInt(wh[1]),multiple);
}
generateXmlFile(Integer.parseInt(wh[0]), Integer.parseInt(wh[1]));
}
}
private void generateBaseXmlFile(int w, int h,float multiple) {
StringBuffer sbForWidth = new StringBuffer();
sbForWidth.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
sbForWidth.append("<resources>\n");
float cellw = w * multiple / baseW;
System.out.println("width : " + w + "," + baseW + "," + cellw);
for (int i = 1; i <= baseW; i++) {
sbForWidth.append("\t"+WTemplate.replace("{0}", i + "").replace("{1}",
change(cellw * i) + ""));
}
// sbForWidth.append("\t"+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>\n");
float cellh = h *multiple/ baseH;
System.out.println("height : "+ h + "," + baseH + "," + cellh);
for (int i = 1; i <= baseH; i++) {
sbForHeight.append("\t"+HTemplate.replace("{0}", i + "").replace("{1}",
change(cellh * i) + ""));
}
// sbForHeight.append("\t"+HTemplate.replace("{0}", baseH + "").replace("{1}",
// h + ""));
sbForHeight.append("</resources>");
File fileDir = new File(dirStr + File.separator
+ VALUE_TEMPLATE1);
fileDir.mkdir();
File layxFile = new File(fileDir.getAbsolutePath(), "ch_dimens_x.xml");
File layyFile = new File(fileDir.getAbsolutePath(), "ch_dimens_y.xml");
System.out.println(fileDir.toString());
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();
}
}
private void generateXmlFile(int w, int h) {
StringBuffer sbForWidth = new StringBuffer();
sbForWidth.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
sbForWidth.append("<resources>\n");
float cellw = w * multiple / baseW;
System.out.println("width : " + w + "," + baseW + "," + cellw);
for (int i = 1; i <= baseW; i++) {
sbForWidth.append("\t"+WTemplate.replace("{0}", i + "").replace("{1}",
change(cellw * i) + ""));
}
// sbForWidth.append("\t"+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>\n");
float cellh = h *multiple/ baseH;
System.out.println("height : "+ h + "," + baseH + "," + cellh);
for (int i = 1; i <= baseH; i++) {
sbForHeight.append("\t"+HTemplate.replace("{0}", i + "").replace("{1}",
change(cellh * i) + ""));
}
// sbForHeight.append("\t"+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(), "ch_dimens_x.xml");
File layyFile = new File(fileDir.getAbsolutePath(), "ch_dimens_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 = 720;
int baseH = 1280;
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();
}
}
2.项目才开始，生成横屏的代码
package com.charlie.volley.utils;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
/**
* 屏幕适配，自动生成dimens.xml
* @author Charlie
*
*/
public class GenerateValueFiles_land {
private int baseW;
private int baseH;
private String dirStr = "./res";
private final static String WTemplate = "<dimen name=\"x{0}\">{1}dp</dimen>\n";
private final static String HTemplate = "<dimen name=\"y{0}\">{1}dp</dimen>\n";
/**
* {0}-HEIGHT
*/
private final static String VALUE_TEMPLATE = "values-{0}x{1}";
private final static String VALUE_TEMPLATE1 = "values";
private static final String SUPPORT_DIMESION = "1280,720;2048,1536;";
/**
* 单位为px:倍数与屏幕分辨率有关，2.0f对应屏幕像素为：720*1280，生成的文件对应放在values-w720dp下面
* 单位为dp：multiple=0.5f，对应屏幕像素为：720*1280，生成的文件对应放在values-w720dp下面
*/
private final static float multiple=0.5f;
private String supportStr = SUPPORT_DIMESION;
public GenerateValueFiles_land(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(",");
if(Integer.parseInt(wh[0])==baseW){
float multiple=1.0f;
generateBaseXmlFile(Integer.parseInt(wh[0]), Integer.parseInt(wh[1]),multiple);
}
generateXmlFile(Integer.parseInt(wh[0]), Integer.parseInt(wh[1]));
}
}
private void generateBaseXmlFile(int w, int h,float multiple) {
StringBuffer sbForWidth = new StringBuffer();
sbForWidth.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
sbForWidth.append("<resources>\n");
float cellw = w * multiple / baseW;
System.out.println("width : " + w + "," + baseW + "," + cellw);
for (int i = 1; i <= baseW; i++) {
sbForWidth.append("\t"+WTemplate.replace("{0}", i + "").replace("{1}",
change(cellw * i) + ""));
}
// sbForWidth.append("\t"+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>\n");
float cellh = h *multiple/ baseH;
System.out.println("height : "+ h + "," + baseH + "," + cellh);
for (int i = 1; i <= baseH; i++) {
sbForHeight.append("\t"+HTemplate.replace("{0}", i + "").replace("{1}",
change(cellh * i) + ""));
}
// sbForHeight.append("\t"+HTemplate.replace("{0}", baseH + "").replace("{1}",
// h + ""));
sbForHeight.append("</resources>");
File fileDir = new File(dirStr + File.separator
+ VALUE_TEMPLATE1+"-land");
fileDir.mkdir();
File layxFile = new File(fileDir.getAbsolutePath(), "ch_dimens_x.xml");
File layyFile = new File(fileDir.getAbsolutePath(), "ch_dimens_y.xml");
System.out.println(fileDir.toString());
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();
}
}
private void generateXmlFile(int w, int h) {
StringBuffer sbForWidth = new StringBuffer();
sbForWidth.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
sbForWidth.append("<resources>\n");
float cellw = w * multiple / baseW;
System.out.println("width : " + w + "," + baseW + "," + cellw);
for (int i = 1; i <= baseW; i++) {
sbForWidth.append("\t"+WTemplate.replace("{0}", i + "").replace("{1}",
change(cellw * i) + ""));
}
// sbForWidth.append("\t"+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>\n");
float cellh = h *multiple/ baseH;
System.out.println("height : "+ h + "," + baseH + "," + cellh);
for (int i = 1; i <= baseH; i++) {
sbForHeight.append("\t"+HTemplate.replace("{0}", i + "").replace("{1}",
change(cellh * i) + ""));
}
// sbForHeight.append("\t"+HTemplate.replace("{0}", baseH + "").replace("{1}",
// h + ""));
sbForHeight.append("</resources>");
File fileDir = new File(dirStr + File.separator
+ VALUE_TEMPLATE.replace("{0}", w + "")//
.replace("{1}", h + "")+"-land");
fileDir.mkdir();
File layxFile = new File(fileDir.getAbsolutePath(), "ch_dimens_x.xml");
File layyFile = new File(fileDir.getAbsolutePath(), "ch_dimens_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 = 1280;
int baseH = 720;
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_land(baseW, baseH, addition).generate();
}
}
3.项目已完成，作屏幕适配，根据已有的dimens.xml生成对应不同分辨率文件夹下的dimens.xml文件
package com.charlie.volley.utils;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
/**
* eclipse下使用
*
* 屏幕适配，自动生成dimens.xml
* @author Charlie
*
*
* 快速生成适配工具类
* 工具类代码，直接运行即可，（如果提示 Invalid layout of preloaded class 错误 项目设置如下即可
Project->Properties->Run/Debug Settings;
Select your Class（DimenTool.java） and click "Edit";
Open the tab "Classpath" and remove Android Lib from "Bootstrap Entries";
Apply everything and Run the class again.
*/
public class DimensUtils {
public static void gen() {
//以此文件夹下的dimens.xml文件内容为初始值参照
File file = new File("./res/values/dimens.xml");
// File file = new File("./app/src/main/res/values/dimens.xml"); android studio
BufferedReader reader = null;
StringBuilder sw240 = new StringBuilder();
StringBuilder sw480 = new StringBuilder();
StringBuilder sw600 = new StringBuilder();
StringBuilder sw720 = new StringBuilder();
StringBuilder sw800 = new StringBuilder();
StringBuilder w820 = new StringBuilder();
try {
System.out.println("生成不同分辨率：");
reader = new BufferedReader(new FileReader(file));
String tempString;
int line = 1;
// 一次读入一行，直到读入null为文件结束
while ((tempString = reader.readLine()) != null) {
if (tempString.contains("</dimen>")) {
//tempString = tempString.replaceAll(" ", "");
String start = tempString.substring(0, tempString.indexOf(">") + 1);
String end = tempString.substring(tempString.lastIndexOf("<") - 2);
//截取<dimen></dimen>标签内的内容，从>右括号开始，到左括号减2，取得配置的数字
Double num = Double.parseDouble
(tempString.substring(tempString.indexOf(">") + 1,
tempString.indexOf("</dimen>") - 2));
//根据不同的尺寸，计算新的值，拼接新的字符串，并且结尾处换行。
sw240.append(start).append( num * 0.75).append(end).append("\r\n");
sw480.append(start).append(num * 1.5).append(end).append("\r\n");
sw600.append(start).append(num * 1.87).append(end).append("\r\n");
sw720.append(start).append(num * 2.25).append(end).append("\r\n");
sw800.append(start).append(num * 2.5).append(end).append("\r\n");
w820.append(start).append(num * 2.56).append(end).append("\r\n");
} else {
sw240.append(tempString).append("");
sw480.append(tempString).append("");
sw600.append(tempString).append("");
sw720.append(tempString).append("");
sw800.append(tempString).append("");
w820.append(tempString).append("");
}
line++;
}
reader.close();
System.out.println("<!-- sw240 -->");
System.out.println(sw240);
System.out.println("<!-- sw480 -->");
System.out.println(sw480);
System.out.println("<!-- sw600 -->");
System.out.println(sw600);
System.out.println("<!-- sw720 -->");
System.out.println(sw720);
System.out.println("<!-- sw800 -->");
System.out.println(sw800);
String sw240file = "./res/values-sw240dp/dimens.xml";
String sw480file = "./res/values-sw480dp/dimens.xml";
String sw600file = "./res/values-sw600dp/dimens.xml";
String sw720file = "./res/values-sw720dp/dimens.xml";
String sw800file = "./res/values-sw800dp/dimens.xml";
String w820file = "./res/values-w820dp/dimens.xml";
//将新的内容，写入到指定的文件中去
writeFile(sw240file, sw240.toString());
writeFile(sw480file, sw480.toString());
writeFile(sw600file, sw600.toString());
writeFile(sw720file, sw720.toString());
writeFile(sw800file, sw800.toString());
writeFile(w820file, w820.toString());
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
/**
* 写入方法
*
*/
public static void writeFile(String file, String text) {
PrintWriter out = null;
try {
// out = new PrintWriter(new BufferedWriter(new FileWriter(file)));
//
// out.println(text);
File fileDir = new File((String) file.subSequence(0, file.length()-11));
fileDir.mkdir();
out= new PrintWriter(new FileOutputStream(new File(file)));
out.println(text);
out.close();
} catch (IOException e) {
e.printStackTrace();
}
out.close();
}
public static void main(String[] args) {
gen();
}
}
