開源項目git地址：https://github.com/mcxiaoke/packer-ng-plugin
開源項目上介紹的gradle配置方式沒有調通，本文直接採用編譯java文件命令行運行的方式實現。
開始超簡單的教程：
一共就一個類，如下：
import java.io.BufferedReader;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileChannel.MapMode;
import java.util.ArrayList;
import java.util.List;
/**
* User: mcxiaoke
* Date: 15/11/23
* Time: 13:12
*/
public final class PackerNg {
private static final String TAG = PackerNg.class.getSimpleName();
private static final String EMPTY_STRING = "";
private static String sCachedMarket;
public static String getMarket(final Object context) {
return getMarket(context, EMPTY_STRING);
}
public static synchronized String getMarket(final Object context, final String defaultValue) {
if (sCachedMarket == null) {
sCachedMarket = getMarketInternal(context, defaultValue).market;
}
return sCachedMarket;
}
public static MarketInfo getMarketInfo(final Object context) {
return getMarketInfo(context, EMPTY_STRING);
}
public static synchronized MarketInfo getMarketInfo(final Object context, final String defaultValue) {
return getMarketInternal(context, defaultValue);
}
private static MarketInfo getMarketInternal(final Object context, final String defaultValue) {
String market;
Exception error;
try {
final String sourceDir = Helper.getSourceDir(context);
market = Helper.readMarket(new File(sourceDir));
error = null;
} catch (Exception e) {
market = null;
error = e;
}
return new MarketInfo(market == null ? defaultValue : market, error);
}
public static final class MarketInfo {
public final String market;
public final Exception error;
public MarketInfo(final String market, final Exception error) {
this.market = market;
this.error = error;
}
@Override
public String toString() {
return "MarketInfo{" +
"market='" + market + '\'' +
", error=" + error +
'}';
}
}
public static class MarketExistsException extends IOException {
public MarketExistsException() {
super();
}
public MarketExistsException(final String message) {
super(message);
}
}
public static class MarketNotFoundException extends IOException {
public MarketNotFoundException() {
super();
}
public MarketNotFoundException(final String message) {
super(message);
}
}
public static class Helper {
static final String UTF_8 = "UTF-8";
static final int ZIP_COMMENT_MAX_LENGTH = 65535;
static final int SHORT_LENGTH = 2;
static final byte[] MAGIC = new byte[]{0x21, 0x5a, 0x58, 0x4b, 0x21}; //!ZXK!
// for android code
private static String getSourceDir(final Object context)
throws ClassNotFoundException,
InvocationTargetException,
IllegalAccessException,
NoSuchFieldException,
NoSuchMethodException {
final Class<?> contextClass = Class.forName("android.content.Context");
final Class<?> applicationInfoClass = Class.forName("android.content.pm.ApplicationInfo");
final Method getApplicationInfoMethod = contextClass.getMethod("getApplicationInfo");
final Object appInfo = getApplicationInfoMethod.invoke(context);
// try ApplicationInfo.publicSourceDir
final Field publicSourceDirField = applicationInfoClass.getField("publicSourceDir");
String sourceDir = (String) publicSourceDirField.get(appInfo);
if (sourceDir == null) {
// try ApplicationInfo.sourceDir
final Field sourceDirField = applicationInfoClass.getField("sourceDir");
sourceDir = (String) sourceDirField.get(appInfo);
}
if (sourceDir == null) {
// try Context.getPackageCodePath()
final Method getPackageCodePathMethod = contextClass.getMethod("getPackageCodePath");
sourceDir = (String) getPackageCodePathMethod.invoke(context);
}
return sourceDir;
}
private static boolean isMagicMatched(byte[] buffer) {
if (buffer.length != MAGIC.length) {
return false;
}
for (int i = 0; i < MAGIC.length; ++i) {
if (buffer[i] != MAGIC[i]) {
return false;
}
}
return true;
}
private static void writeBytes(byte[] data, DataOutput out) throws IOException {
out.write(data);
}
private static void writeShort(int i, DataOutput out) throws IOException {
ByteBuffer bb = ByteBuffer.allocate(SHORT_LENGTH).order(ByteOrder.LITTLE_ENDIAN);
bb.putShort((short) i);
out.write(bb.array());
}
private static short readShort(DataInput input) throws IOException {
byte[] buf = new byte[SHORT_LENGTH];
input.readFully(buf);
ByteBuffer bb = ByteBuffer.wrap(buf).order(ByteOrder.LITTLE_ENDIAN);
return bb.getShort(0);
}
public static void writeZipComment(File file, String comment) throws IOException {
if (hasZipCommentMagic(file)) {
throw new MarketExistsException("Zip comment already exists, ignore.");
}
// {@see java.util.zip.ZipOutputStream.writeEND}
byte[] data = comment.getBytes(UTF_8);
final RandomAccessFile raf = new RandomAccessFile(file, "rw");
raf.seek(file.length() - SHORT_LENGTH);
// write zip comment length
// (content field length + length field length + magic field length)
writeShort(data.length + SHORT_LENGTH + MAGIC.length, raf);
// write content
writeBytes(data, raf);
// write content length
writeShort(data.length, raf);
// write magic bytes
writeBytes(MAGIC, raf);
raf.close();
}
public static boolean hasZipCommentMagic(File file) throws IOException {
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(file, "r");
long index = raf.length();
byte[] buffer = new byte[MAGIC.length];
index -= MAGIC.length;
// read magic bytes
raf.seek(index);
raf.readFully(buffer);
// check magic bytes matched
return isMagicMatched(buffer);
} finally {
if (raf != null) {
raf.close();
}
}
}
public static String readZipComment(File file) throws IOException {
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(file, "r");
long index = raf.length();
byte[] buffer = new byte[MAGIC.length];
index -= MAGIC.length;
// read magic bytes
raf.seek(index);
raf.readFully(buffer);
// if magic bytes matched
if (isMagicMatched(buffer)) {
index -= SHORT_LENGTH;
raf.seek(index);
// read content length field
int length = readShort(raf);
if (length > 0) {
index -= length;
raf.seek(index);
// read content bytes
byte[] bytesComment = new byte[length];
raf.readFully(bytesComment);
return new String(bytesComment, UTF_8);
} else {
throw new MarketNotFoundException("Zip comment content not found");
}
} else {
throw new MarketNotFoundException("Zip comment magic bytes not found");
}
} finally {
if (raf != null) {
raf.close();
}
}
}
private static String readZipCommentMmp(File file) throws IOException {
final int mappedSize = 10240;
final long fz = file.length();
RandomAccessFile raf = null;
MappedByteBuffer map = null;
try {
raf = new RandomAccessFile(file, "r");
map = raf.getChannel().map(MapMode.READ_ONLY, fz - mappedSize, mappedSize);
map.order(ByteOrder.LITTLE_ENDIAN);
int index = mappedSize;
byte[] buffer = new byte[MAGIC.length];
index -= MAGIC.length;
// read magic bytes
map.position(index);
map.get(buffer);
// if magic bytes matched
if (isMagicMatched(buffer)) {
index -= SHORT_LENGTH;
map.position(index);
// read content length field
int length = map.getShort();
if (length > 0) {
index -= length;
map.position(index);
// read content bytes
byte[] bytesComment = new byte[length];
map.get(bytesComment);
return new String(bytesComment, UTF_8);
}
}
} finally {
if (map != null) {
map.clear();
}
if (raf != null) {
raf.close();
}
}
return null;
}
public static void writeMarket(final File file, final String market) throws IOException {
writeZipComment(file, market);
}
public static String readMarket(final File file) throws IOException {
return readZipComment(file);
}
public static boolean verifyMarket(final File file, final String market) throws IOException {
return market.equals(readMarket(file));
}
public static void println(String msg) {
System.out.println(msg);
}
public static void printErr(String msg) {
System.err.println(msg);
}
public static List<String> parseMarkets(final File file) throws IOException {
final List<String> markets = new ArrayList<String>();
FileReader fr = new FileReader(file);
BufferedReader br = new BufferedReader(fr);
String line = null;
int lineNo = 1;
while ((line = br.readLine()) != null) {
String parts[] = line.split("#");
if (parts.length > 0) {
final String market = parts[0].trim();
if (market.length() > 0) {
markets.add(market);
}
}
++lineNo;
}
br.close();
fr.close();
return markets;
}
public static void copyFile(File src, File dest) throws IOException {
if (!dest.exists()) {
dest.createNewFile();
}
FileChannel source = null;
FileChannel destination = null;
try {
source = new FileInputStream(src).getChannel();
destination = new FileOutputStream(dest).getChannel();
destination.transferFrom(source, 0, source.size());
} finally {
if (source != null) {
source.close();
}
if (destination != null) {
destination.close();
}
}
}
public static boolean deleteDir(File dir) {
File[] files = dir.listFiles();
if (files == null || files.length == 0) {
return false;
}
for (File file : files) {
if (file.isDirectory()) {
deleteDir(file);
} else {
file.delete();
}
}
return true;
}
public static String getExtension(final String fileName) {
int dot = fileName.lastIndexOf(".");
if (dot > 0) {
return fileName.substring(dot + 1);
} else {
return null;
}
}
}
private static final String USAGE_TEXT =
"Usage: java -jar PackerNg-x.x.x.jar apkFile marketFile [outputDir] ";
private static final String INTRO_TEXT =
"\nAttention: if your app using Android gradle plugin 2.2.0 or later, " +
"be sure to install one of the generated Apks to device or emulator, " +
"to ensure the apk can be installed without errors. " +
"More details please go to github " +
"https://github.com/mcxiaoke/packer-ng-plugin .\n";
public static void main(String[] args) {
if (args.length < 2) {
Helper.println(USAGE_TEXT);
Helper.println(INTRO_TEXT);
System.exit(1);
}
File apkFile = new File(args[0]);
File marketFile = new File(args[1]);
File outputDir = new File(args.length >= 3 ? args[2] : "apks");
if (!apkFile.exists()) {
Helper.printErr("Apk file '" + apkFile.getAbsolutePath() +
"' is not exists or not readable.");
Helper.println(USAGE_TEXT);
System.exit(1);
return;
}
if (!marketFile.exists()) {
Helper.printErr("Market file '" + marketFile.getAbsolutePath() +
"' is not exists or not readable.");
Helper.println(USAGE_TEXT);
System.exit(1);
return;
}
if (!outputDir.exists()) {
outputDir.mkdirs();
}
Helper.println("Apk File: " + apkFile.getAbsolutePath());
Helper.println("Market File: " + marketFile.getAbsolutePath());
Helper.println("Output Dir: " + outputDir.getAbsolutePath());
List<String> markets = null;
try {
markets = Helper.parseMarkets(marketFile);
} catch (IOException e) {
Helper.printErr("Market file parse failed.");
System.exit(1);
}
if (markets == null || markets.isEmpty()) {
Helper.printErr("No markets found.");
System.exit(1);
return;
}
final String extName = Helper.getExtension(apkFile.getName());
int processed = 0;
try {
for (final String market : markets) {
String channel = market.split(",")[0];
channel = channel.equals("1")?"yt":channel;
final String apkName = "app-" + channel + "-release." + extName;
File destFile = new File(outputDir, apkName);
Helper.copyFile(apkFile, destFile);
Helper.writeMarket(destFile, market);
if (Helper.verifyMarket(destFile, market)) {
++processed;
Helper.println("Generating apk " + apkName);
} else {
destFile.delete();
Helper.printErr("Failed to generate " + apkName);
}
}
Helper.println("[Success] All " + processed
+ " apks saved to " + outputDir.getAbsolutePath());
Helper.println(INTRO_TEXT);
} catch (MarketExistsException ex) {
Helper.printErr("Market info exists in '" + apkFile
+ "', please using a clean apk.");
System.exit(1);
} catch (IOException ex) {
Helper.printErr("" + ex);
System.exit(1);
}
}
}
=======================================================================================
如何獲取渠道？
PackerNg.getMarket(ApplicationProxy.getInstance().getContext());如何打包多渠道包？
編譯上文的PackerNg.java 得到PackerNg.class文件
javac PackerNg.java然後運行
java PackerNg D:\app-yt-release.apk D:\markets.txt D:\channel_apk\20161025
pause渠道信息文件範例：
huawei
wandoujia#我是註釋
vivo========================================================================================
速度快到超乎你的想象，幾秒鐘後就能在參數三目錄看到你所有需要的渠道包，趕緊試試吧騷年。