mmadev

public class MultiDexUtils {
    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";

mmadev

android.applicationVariants.all { variant ->
    task "fix${variant.name.capitalize()}MainDexClassList" << {
        logger.info "Fixing main dex keep file for $variant.name"
        File keepFile = new File("$buildDir/intermediates/multi-dex/$variant.buildType.name/maindexlist.txt")
        keepFile.withWriterAppend { w ->
            // Get a reader for the input file
            w.append('\n')
            new File("${projectDir}/multidex.keep").withReader { r ->
                // And write data from the input into the output
                w << r << '\n'