android studio Run java的main方法失败

Posted 2022-01-02 mmsx

1、报错信息

A problem occurred configuring project ':app'.
> Could not create task ':app:DimenTool.main()'.
   > SourceSet with name 'main' not found.

 2、解决办法

在.idea文件夹下的gradle.xml文件中添加<option name="delegatedBuild" value="false" />，然后重新运行就可以了

然后重新点击需要运行的java 的mian方法就行。

3、分享和main测试

分享android studio 一个自动生成不同分辨率的dimens.xml尺寸适配的类，亲测好用。UI适配工具类。

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class DimenTool 
    public static void gen() 

//        File file = new File("./app/src/main/res/values/dimens.xml");

        File file = new File("./chatLib/src/main/res/values/dimens.xml");
        BufferedReader reader = null;
        StringBuilder sw480 = new StringBuilder();
        StringBuilder sw600 = new StringBuilder();
        StringBuilder sw720 = new StringBuilder();
        StringBuilder sw800 = new StringBuilder();
        StringBuilder sw1080 = 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);
                    int num = Integer.valueOf(tempString.substring(tempString.indexOf(">") + 1, tempString.indexOf("</dimen>") - 2));

                    sw480.append(start).append((int) Math.round(num * 0.6)).append(end).append("\\n");
                    sw600.append(start).append((int) Math.round(num * 0.75)).append(end).append("\\n");
                    sw720.append(start).append((int) Math.round(num * 0.9)).append(end).append("\\n");
                    sw800.append(tempString).append("\\n");
                    sw1080.append(start).append((int) Math.round(num * 2.5)).append(end).append("\\n");
                 else 
                    sw480.append(tempString).append("\\n");
                    sw600.append(tempString).append("\\n");
                    sw720.append(tempString).append("\\n");
                    sw800.append(tempString).append("\\n");
                    sw1080.append(tempString).append("\\n");
                
                line++;
            
            reader.close();
            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 sw480file = "./app/src/main/res/values-sw480dp-land";
//            String sw600file = "./app/src/main/res/values-sw600dp-land";
//            String sw720file = "./app/src/main/res/values-sw720dp-land";
//            String sw800file = "./app/src/main/res/values-sw800dp-land";
//            String sw1080file = "./app/src/main/res/values-sw1080dp-land";


            String sw480file = "./chatLib/src/main/res/values-sw480dp-land";
            String sw600file = "./chatLib/src/main/res/values-sw600dp-land";
            String sw720file = "./chatLib/src/main/res/values-sw720dp-land";
            String sw800file = "./chatLib/src/main/res/values-sw800dp-land";
            String sw1080file = "./chatLib/src/main/res/values-sw1080dp-land";


            writeFile(sw480file, sw480.toString());
            writeFile(sw600file, sw600.toString());
            writeFile(sw720file, sw720.toString());
            writeFile(sw800file, sw800.toString());
            writeFile(sw1080file, sw1080.toString());
         catch (IOException e) 
            e.printStackTrace();
         finally 
            if (reader != null) 
                try 
                    reader.close();
                 catch (IOException e1) 
                    e1.printStackTrace();
                
            
        
    

    public static void writeFile(String path, String text) 
        File valuesDir = new File(path);
        File valuesFile = new File(valuesDir, "dimens.xml");
        if (!valuesDir.exists()) 
            valuesDir.mkdir();
        

        try 
            BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(valuesFile));
            bufferedWriter.write(text);
            bufferedWriter.newLine();
            bufferedWriter.flush();
            bufferedWriter.close();
         catch (IOException e) 
            e.printStackTrace();
        


    

    public static void main(String[] args) 
        gen();