android 屏幕適配1 ——dimens.xml的適配


 

1.如果是才開始做項目,已經有設計圖:720*1280

1).默認values文件夾: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像素對應的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像素對應的values-w1080dp文件: 【以720*1280位基准數作倍數換算

values-w1080dp/dimens_x.xml:

 name: x1~x720   value:3px~1080px     Width:1080  baseW:720 

<dimen name="x1">3.0px</dimen> 倍數換算:倍數=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> 倍數換算:倍數=Height/baseH=1920/1280=1.5  value=1.5*2px=3.0px

 

 

 備注:

1.倍數即屏幕像素密度:例子中用的是常用的手機像素密度,但市面上手機像素密度參差不齊,跟你測試的實際手機像素密度可能不一樣,但一般用常用的像素密度來換算

2.若以dp為單位

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.項目完成之后,則將values下面的dimens.xml 文件

 

按照不同分辯率的手機生成對應倍數的不同像素的dimens.xml文件

 eg:以720*1280為例子

values/dimens.xml :1dp=1px

<dimen name="x1">1dp</dimen>

values-w720dp/dimens.xml : 【720*1280】 

<dimen name="x1">0.5dp</dimen> 倍數換算:  1dp=2px  720px=360dp    倍數=360/720=0.5

values-w1080dp/dimens.xml : 【1080*1920

<dimen name="x1">0.75dp</dimen> 倍數換算【以720作基准】:1080/720*0.5=0.75dp 

 

附:自動生成dimens.xml的代碼:

1.項目才開始,生成豎屏的代碼


package
com.charlie.volley.utils; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.PrintWriter; /** * 屏幕適配,自動生成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"; /** * 單位為px:倍數與屏幕分辨率有關,2.0f對應屏幕像素為:720*1280,生成的文件對應放在values-w720dp下面 * 單位為dp:multiple=0.5f,對應屏幕像素為:720*1280,生成的文件對應放在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.項目才開始,生成橫屏的代碼

 

package com.charlie.volley.utils;

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

/**
 * 屏幕適配,自動生成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;";
    /**
     * 單位為px:倍數與屏幕分辨率有關,2.0f對應屏幕像素為:720*1280,生成的文件對應放在values-w720dp下面
     * 單位為dp:multiple=0.5f,對應屏幕像素為:720*1280,生成的文件對應放在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.項目已完成,作屏幕適配,根據已有的dimens.xml生成對應不同分辨率文件夾下的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
 * 
 * 屏幕適配,自動生成dimens.xml
 * @author Charlie
 *
 *
 * 快速生成適配工具類 
 * 工具類代碼,直接運行即可,(如果提示 Invalid layout of preloaded class 錯誤 項目設置如下即可

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() {  
        //以此文件夾下的dimens.xml文件內容為初始值參照  
        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;  
  
            // 一次讀入一行,直到讀入null為文件結束  
  
            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>標簽內的內容,從>右括號開始,到左括號減2,取得配置的數字  
                    Double num = Double.parseDouble  
                            (tempString.substring(tempString.indexOf(">") + 1,   
                                    tempString.indexOf("</dimen>") - 2));  
  
                    //根據不同的尺寸,計算新的值,拼接新的字符串,並且結尾處換行。  
                    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";  
            //將新的內容,寫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();  
  
                }  
  
            }  
  
        }  
  
    }  
  
  
    /** 
     * 寫入方法 
     * 
     */  
  
    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();  
  
    }  
  
}  

 


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