android 屏幕适配的问题文字资料和适配资料的链接

╰半夏微凉° 2022-08-21 00:02 172阅读 0赞

android 屏幕适配的问题

建立一个java项目，写入如下代码，运行，会在pathroot路径下生成一个layoutroot文件夹，layoutroot文件夹下就生成了对应分辨率的valuesXXXXXX文件夹，将生成的这些文件夹全部复制到android项目的res文件夹下，这样当运行到对应分辨率的设备上时，通常界面就能正常显示了：

public class LayoutXmlOne { 
        private final static String pathroot= "C:\\Users\\Administrator\\Desktop\\layoutroot\\values-{0}x{1}\\";
    
        private final static float dw = 320f;
        private final static float dh = 480f;
    
        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";
    
        public static void main(String[] args) 
        {
            makeString(320, 480);
            makeString(480,800);
            makeString(480, 854);
            makeString(540, 960);
            makeString(600, 1024);
            makeString(720, 1184);
            makeString(720, 1196);
            makeString(720, 1280);
            makeString(768, 1024);
            makeString(800, 1280);
            makeString(1080, 1812);
            makeString(1080, 1920);
            makeString(1440, 2560);
        }
    
        public static void makeString(int w, int h) 
        {
            StringBuffer sb = new StringBuffer();
            sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
            sb.append("<resources>");
            float cellw = w / dw;
            for (int i = 1; i < 320; i++) 
            {
                sb.append(WTemplate.replace("{0}", i + "").replace("{1}",
                        change(cellw * i) + ""));
            }
            sb.append(WTemplate.replace("{0}", "320").replace("{1}", w + ""));
            sb.append("</resources>");
    
            StringBuffer sb2 = new StringBuffer();
            sb2.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
            sb2.append("<resources>");
            float cellh = h / dh;
            for (int i = 1; i < 480; i++) 
            {
                sb2.append(HTemplate.replace("{0}", i + "").replace("{1}",
                        change(cellh * i) + ""));
            }
            sb2.append(HTemplate.replace("{0}", "480").replace("{1}", h + ""));
            sb2.append("</resources>");
    
            String path = rootPath.replace("{0}", h + "").replace("{1}", w + "");
            File rootFile = new File(path);
            if (!rootFile.exists()) 
            {
                rootFile.mkdirs();
            }
            File layxFile = new File(path + "lay_x.xml");
            File layyFile = new File(path + "lay_y.xml");
            try 
            {
                PrintWriter pw = new PrintWriter(new FileOutputStream(layxFile));
                pw.print(sb.toString());
                pw.close();
                pw = new PrintWriter(new FileOutputStream(layyFile));
                pw.print(sb2.toString());
                pw.close();
            } catch (FileNotFoundException e) 
            {
                e.printStackTrace();
            }
        }
    
        public static float change(float a) 
        {
            int temp = (int) (a * 100);
            return temp / 100f;
        }
    }

但是当运行的设备没有找到对应的分辨率文件夹时，使用的是哪个文件呢，使用的是默认生成的values文件夹下的lay\_x.xml和lay\_y.xml文件，与之前valuesXXXXXX文件夹下的文件不同的是单位，前者为px后者为dp，运行下面代码，将生成的两个文件复制到values文件夹下，就可以匹配其他没有生成对应分辨率的设备了；

public class LayoutXmlTwo { 
        private final static String rootPath = "C:\\Users\\Administrator\\Desktop\\layoutroot\\other_values-{0}x{1}\\";
    
        private final static float dw = 320f;
        private final static float dh = 480f;
    
        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";
    
        public static void main(String[] args) 
        {
            makeString(320, 480);
        }
    
        public static void makeString(int w, int h) 
        {
            StringBuffer sb = new StringBuffer();
            sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
            sb.append("<resources>");
            float cellw = w / dw;
            for (int i = 1; i < 320; i++) 
            {
                sb.append(WTemplate.replace("{0}", i + "").replace("{1}",
                        change(cellw * i) + ""));
            }
            sb.append(WTemplate.replace("{0}", "320").replace("{1}", w + ""));
            sb.append("</resources>");
    
            StringBuffer sb2 = new StringBuffer();
            sb2.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
            sb2.append("<resources>");
            float cellh = h / dh;
            for (int i = 1; i < 480; i++) 
            {
                sb2.append(HTemplate.replace("{0}", i + "").replace("{1}",
                        change(cellh * i) + ""));
            }
            sb2.append(HTemplate.replace("{0}", "480").replace("{1}", h + ""));
            sb2.append("</resources>");
    
            String path = rootPath.replace("{0}", h + "").replace("{1}", w + "");
            File rootFile = new File(path);
            if (!rootFile.exists()) 
            {
                rootFile.mkdirs();
            }
            File layxFile = new File(path + "lay_x.xml");
            File layyFile = new File(path + "lay_y.xml");
            try 
            {
                PrintWriter pw = new PrintWriter(new FileOutputStream(layxFile));
                pw.print(sb.toString());
                pw.close();
                pw = new PrintWriter(new FileOutputStream(layyFile));
                pw.print(sb2.toString());
                pw.close();
            } catch (FileNotFoundException e) 
            {
                e.printStackTrace();
            }
        }
    
        public static float change(float a) 
        {
            int temp = (int) (a * 100);
            return temp / 100f;
        }
    }

之后最重要的就是使用了，比如我们之前定义了“layout\_width=33dp”，现在写成“layout\_width=@dimen/x33”即可；

文字资料和适配资料的链接，资料写的挺详细，视频讲的也挺清楚得；  
文字资料：[http://blog.csdn.net/zhaokaiqiang1992/article/details/45419023][http_blog.csdn.net_zhaokaiqiang1992_article_details_45419023]  
视频资料：[http://www.imooc.com/learn/484][http_www.imooc.com_learn_484]

[http_blog.csdn.net_zhaokaiqiang1992_article_details_45419023]: http://blog.csdn.net/zhaokaiqiang1992/article/details/45419023
[http_www.imooc.com_learn_484]: http://www.imooc.com/learn/484