Android SDK的docs访问速度慢，Please configure the Android SDK Environment variable (ANDROID_SDK_HOME)!

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本文指导如何在系统环境中配置Android SDK路径，并通过代码遍历解析SDK下的文档目录，去除特定的JavaScript代码行。

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import java.io.BufferedReader;  
import java.io.BufferedWriter;  
import java.io.File;  
import java.io.FileFilter;  
import java.io.FileNotFoundException;  
import java.io.FileReader;  
import java.io.FileWriter;  
import java.io.IOException;  
import java.util.Map;  
import java.util.UUID;  

public class HelloWorld {  
    private static final String ANDROID_SDK_HOME = "ANDROID_SDK_HOME";  
    private static final String TAG = "<script src=\"http://www.google.com/jsapi\" type=\"text/javascript\"></script>";  
    private static String androidSDKHome;  
 
    public static void main(String[] args) {  
        Map<String, String> map = System.getenv();  
        androidSDKHome = map.get(ANDROID_SDK_HOME);  
        if (androidSDKHome != null) {  
            System.out.println("Detected the Android SDK Installation path:" 
                    + androidSDKHome);  
            File docs = new File(androidSDKHome + "\\docs");  
            System.out.println("It will take several minutes, please wait...");  
            traverse(docs);  
            System.out  
                    .println("Operation Down!!! Now you can visit Android Doc without waiting...");  
        } else {  
            System.out  
                    .println("Please configure the Android SDK Environment variable (ANDROID_SDK_HOME)!");  
        }  
    }  
 
    /**  
     * 遍历Android SDK安装目录下的docs目录  
     *   
     * @param dir  
     */ 
    private static void traverse(File dir) {  
        if (dir.isDirectory()) {  
            File[] files = dir.listFiles(new FileFilter() {  
                @Override 
                public boolean accept(File file) {  
                    if (file.isFile() && file.getName().endsWith(".html")) {  
                        BufferedReader reader = null;  
                        try {  
                            reader = new BufferedReader(new FileReader(file));  
                            String buffer;  
                            while ((buffer = reader.readLine()) != null) {  
                                if (buffer.trim().equalsIgnoreCase(TAG)) {  
                                    return true;  
                                }  
                            }  
                        } catch (Exception e) {  
                            e.printStackTrace();  
                        } finally {  
                            try {  
                                reader.close();  
                            } catch (IOException e) {  
                                e.printStackTrace();  
                            }  
                        }  
                    } else if (file.isDirectory()) {  
                        return true;  
                    } 

                    return false;  
                }  
            }); 

            for (File file : files) {  
                if (file.isDirectory()) {  
                    System.out.println("Scanning Folder:" 
                            + file.getAbsolutePath());  
                    traverse(file);  
                } else {  
                    doChange(file);  
                }  
            }  
        }  
    } 

    /**  
     * 注释html中的某行Javascript代码  
     *   
     * @param file  
     * @return  
     */ 
    private static boolean doChange(File file) {  
        System.out.println("Extracting File:" + file.getAbsolutePath() + "...");  
        String desPath = file.getParent() + "\\" + UUID.randomUUID().toString() + ".html";  
        File des = new File(desPath);  
        BufferedReader reader = null;  
        BufferedWriter writer = null;  
        try {  
            des.createNewFile();  
            reader = new BufferedReader(new FileReader(file));  
            writer = new BufferedWriter(new FileWriter(des));  
            String buffer;  
            while ((buffer = reader.readLine()) != null) {  
                if (buffer.trim().equalsIgnoreCase(TAG)) {  
                    buffer = "<!--" + TAG + "-->";  
                } 

                writer.write(buffer + "\n");  
                writer.flush();  
            } 

            return true;  
        } catch (FileNotFoundException e) {  
            e.printStackTrace();  
        } catch (IOException e) {  
            e.printStackTrace();  
        } finally {  
            try {  
                reader.close();  
                writer.close();  
                file.delete();  
                des.renameTo(file);  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
        } 

        return false;  
    }   
}

Please configure the Android SDK Environment variable (ANDROID_SDK_HOME)!