Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Build;

import java.io.File;
import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

public class Main {
    private static final String EXTRACTED_NAME_EXT = ".classes";
    private static final String EXTRACTED_SUFFIX = ".zip";
    private static final String SECONDARY_FOLDER_NAME = "code_cache" + File.separator + "secondary-dexes";
    private static final String PREFS_FILE = "multidex.version";
    private static final String KEY_DEX_NUMBER = "dex.number";

    /**
     * get all the dex path
     *
     * @param context the application context
     * @return all the dex path
     */
    public static List<String> getSourcePaths(Context context)
            throws PackageManager.NameNotFoundException, IOException {
        ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(context.getPackageName(),
                0);
        File sourceApk = new File(applicationInfo.sourceDir);
        File dexDir = new File(applicationInfo.dataDir, SECONDARY_FOLDER_NAME);

        List<String> sourcePaths = new ArrayList<String>();
        sourcePaths.add(applicationInfo.sourceDir); //add the default apk path

        //the prefix of extracted file, ie: test.classes
        String extractedFilePrefix = sourceApk.getName() + EXTRACTED_NAME_EXT;
        //the total dex numbers
        int totalDexNumber = getMultiDexPreferences(context).getInt(KEY_DEX_NUMBER, 1);

        for (int secondaryNumber = 2; secondaryNumber <= totalDexNumber; secondaryNumber++) {
            //for each dex file, ie: test.classes2.zip, test.classes3.zip...
            String fileName = extractedFilePrefix + secondaryNumber + EXTRACTED_SUFFIX;
            File extractedFile = new File(dexDir, fileName);
            if (extractedFile.isFile()) {
                sourcePaths.add(extractedFile.getAbsolutePath());
                //we ignore the verify zip part
            } else {
                throw new IOException("Missing extracted secondary dex file '" + extractedFile.getPath() + "'");
            }
        }

        return sourcePaths;
    }

    private static SharedPreferences getMultiDexPreferences(Context context) {
        return context.getSharedPreferences(PREFS_FILE,
                Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB ? Context.MODE_PRIVATE
                        : Context.MODE_PRIVATE | Context.MODE_MULTI_PROCESS);
    }
}