NDK开发（三）：增量更新
效果：
版本1：
增量更新后的版本
用到的C库
bsdiff：：https://github.com/mendsley/bsdiff
bzip2： https://sourceforge.net/projects/bzip2/
差分包的生成（windows）
- 将需要的开源文件导入vs
其中jni.h和jni_md.h头文件从系统jdk中获得，这里会出现各种报错请查看【The POSIX name for this item is deprecated. Instead,】【使用了可能未初始化的本地指针变量“xxx”】
创建java项目
- 创建jni调用java类
package bsdiff;
public class BsDiff {
/**
* 差分
* @param oldfile
* @param newfile
* @param patchfile
*/
public native static void diff(String oldfile, String newfile, String patchfile);
static {
System.loadLibrary("bsdiff");
}
}
- 生成.h头文件放进vs项目中
/* DO NOT EDIT THIS FILE - it is machine generated */
#include "jni.h"
/* Header for class bsdiff_BsDiff */
#ifndef _Included_bsdiff_BsDiff
#define _Included_bsdiff_BsDiff
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: bsdiff_BsDiff
* Method: diff
* Signature: (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_bsdiff_BsDiff_diff
(JNIEnv *, jclass, jstring, jstring, jstring);
#ifdef __cplusplus
}
#endif
#endif
-
在bsdiff.cpp文件中调用实现jni方法
将main方法更改为bsdiff_main方法直接使用
//JNI调用
JNIEXPORT void JNICALL Java_bsdiff_BsDiff_diff
(JNIEnv *env, jclass jcls, jstring oldfile_jstr, jstring newfile_jstr, jstring patchfile_jstr) {
int argc = 4;
char* oldfile = (char*)env->GetStringUTFChars(oldfile_jstr,NULL);
char* newfile = (char*)env->GetStringUTFChars(newfile_jstr, NULL);
char* patchfile = (char*)env->GetStringUTFChars(patchfile_jstr, NULL);
//参数（第一个参数无效）
char *argv[4];
argv[0] = (char*)"bsdiff";
argv[1] = oldfile;
argv[2] = newfile;
argv[3] = patchfile;
bsdiff_main(argc, argv);
env->ReleaseStringUTFChars(oldfile_jstr, oldfile);
env->ReleaseStringUTFChars(newfile_jstr, newfile);
env->ReleaseStringUTFChars(patchfile_jstr, patchfile);
}
- 生成解决方案（.dll）放到java项目跟目录下方便使用
- 调用jni生成差分包
public class ConstantsWin {
//路径不能包含中文
public static final String OLD_APK_PATH = "C:/Users/Administrator/Desktop/bsdiff/old.apk";
public static final String NEW_APK_PATH = "C:/Users/Administrator/Desktop/bsdiff/new.apk";
public static final String PATCH_PATH = "C:/Users/Administrator/Desktop/bsdiff/apk.patch";
}
public class Main {
public static void main(String[] args) {
//得到差分包
BsDiff.diff(ConstantsWin.OLD_APK_PATH,ConstantsWin.NEW_APK_PATH,ConstantsWin.PATCH_PATH);
}
}
这里就将两个版本的差分包生成出来了！
差分包的合并
- 创建android项目
- 将需要的c文件考入项目中
- 创建native方法
package com.qufu.mergeupdates.utils.jni;
public class BsPatch {
/**
* 合并
* @param oldfile
* @param newfile
* @param patchfile
*/
public native static void patch(String oldfile,String newfile,String patchfile);
static {
System.loadLibrary("bspatch");
}
}
- 生成头文件
/* DO NOT EDIT THIS FILE - it is machine generated */
#include - 在bapatch.c文件中实现jni方法，同样将main方法改为bspatch_main方法，方便调用
/**
* 合并
*/
JNIEXPORT void JNICALL Java_com_qufu_mergeupdates_utils_jni_BsPatch_patch
(JNIEnv *env, jclass jcls, jstring oldfile_jstr, jstring newfile_jstr,
jstring patchfile_jstr) {
int argc = 4;
char *oldfile = (*env)->GetStringUTFChars(env, oldfile_jstr, NULL);
char *newfile = (*env)->GetStringUTFChars(env, newfile_jstr, NULL);
char *patchfile = (*env)->GetStringUTFChars(env, patchfile_jstr, NULL);
//参数（第一个参数无效）
char *argv[4];
argv[0]="bspatch";
argv[1]=oldfile;
argv[2]=newfile;
argv[3]=patchfile;
bspatch_main(argc,argv);
(*env)->ReleaseStringUTFChars(env,oldfile_jstr,oldfile);
(*env)->ReleaseStringUTFChars(env,newfile_jstr,newfile);
(*env)->ReleaseStringUTFChars(env,patchfile_jstr,patchfile);
}
- 权限的申请
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
tools:ignore="ProtectedPermissions" />
- 下载并合并
class ApkUpdataTask extends AsyncTask<Void,Void,Boolean>{
@Override
protected Boolean doInBackground(Void... voids) {
try {
//下载差分包
File patchFile = DownloadUtils.download(Constants.URL_PATCH_DOWNLOAD);
//获取当前apk文件 /data/app/my.apk
String oldfile=ApkUtils.getSourceApkPath(MainActivity.this,getPackageName());
String newfile=Constants.NEW_APK_PATH;
String patchfile=patchFile.getAbsolutePath();
//合并得到最新版本的APK文件
BsPatch.patch(oldfile,newfile,patchfile);
Log.e("huangxiaoguo","oldfile===>"+oldfile);
Log.e("huangxiaoguo","newfile===>"+newfile);
Log.e("huangxiaoguo","patchfile===>"+patchfile);
}catch (Exception e){
e.printStackTrace();
return false;
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
//安装
if (result){
Toast.makeText(MainActivity.this,"安装开始",Toast.LENGTH_LONG).show();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
boolean hasInstallPermission = MainActivity.this.getPackageManager().canRequestPackageInstalls();
if (!hasInstallPermission) {
//跳转至“安装未知应用”权限界面，引导用户开启权限
Uri selfPackageUri = Uri.parse("package:" + MainActivity.this.getPackageName());
Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, selfPackageUri);
startActivityForResult(intent, REQUEST_CODE_UNKNOWN_APP);
return;
}else {
ApkUtils.installApk(MainActivity.this,Constants.NEW_APK_PATH);
}
}else {
ApkUtils.installApk(MainActivity.this,Constants.NEW_APK_PATH);
}
}
}
}
android整体代码
- 工具类
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Build;
import android.support.v4.content.FileProvider;
import android.text.TextUtils;
import java.io.File;
public class ApkUtils {
public static boolean isInstalled(Context context, String packageName) {
PackageManager pm = context.getPackageManager();
boolean installed = false;
try {
pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);
installed = true;
} catch (Exception e) {
e.printStackTrace();
}
return installed;
}
/**
* 获取已安装Apk文件的源Apk文件
* 如：/data/app/my.apk
*
* @param context
* @param packageName
* @return
*/
public static String getSourceApkPath(Context context, String packageName) {
if (TextUtils.isEmpty(packageName))
return null;
try {
ApplicationInfo appInfo = context.getPackageManager()
.getApplicationInfo(packageName, 0);
return appInfo.sourceDir;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return null;
}
/**
* 安装apk
* @param context
* @param filePath
*/
public static void installApk(Context context,String filePath) {
File apkFile = new File(filePath);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addCategory(Intent.CATEGORY_DEFAULT);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
//7.0
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri contentUri = FileProvider.getUriForFile(context, "com.qufu.mergeupdates.fileProvider", apkFile);
intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
} else {
/**
* 正常安装
*/
intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
}
context.startActivity(intent);
}
}
import java.io.File;
import android.os.Environment;
public class Constants {
public static final String PATCH_FILE = "apk.patch";
public static final String URL_PATCH_DOWNLOAD = "http://192.168.6.17:8080/ndk/bsdiff/"+PATCH_FILE;
public static final String SD_CARD = Environment.getExternalStorageDirectory() + File.separator;
//新版本apk的目录
public static final String NEW_APK_PATH = SD_CARD+"dn_apk_new.apk";
}
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.os.Environment;
public class DownloadUtils {
/**
* 下载差分包
* @param url
* @return
* @throws Exception
*/
public static File download(String url){
File file = null;
InputStream is = null;
FileOutputStream os = null;
try {
file = new File(Environment.getExternalStorageDirectory(),Constants.PATCH_FILE);
if (file.exists()) {
file.delete();
}
HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
conn.setDoInput(true);
is = conn.getInputStream();
os = new FileOutputStream(file);
byte[] buffer = new byte[1024];
int len = 0;
while((len = is.read(buffer)) != -1){
os.write(buffer, 0, len);
}
} catch(Exception e){
e.printStackTrace();
}finally{
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return file;
}
}
- jni
public class BsPatch {
/**
* 合并
* @param oldfile
* @param newfile
* @param patchfile
*/
public native static void patch(String oldfile,String newfile,String patchfile);
static {
System.loadLibrary("bspatch");
}
}
import android.Manifest;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import com.qufu.mergeupdates.utils.ApkUtils;
import com.qufu.mergeupdates.utils.Constants;
import com.qufu.mergeupdates.utils.DownloadUtils;
import com.qufu.mergeupdates.utils.jni.BsPatch;
import java.io.File;
import java.io.StringReader;
import tsou.cn.lib_primissions.HxgPermissionFail;
import tsou.cn.lib_primissions.HxgPermissionHelper;
import tsou.cn.lib_primissions.HxgPermissionSuccess;
public class MainActivity extends AppCompatActivity {
private static final int REQUESE_CODE = 102;
private int REQUEST_CODE_UNKNOWN_APP=110;
/**
* 使用时放在BaseActivity中或BaseFragment中
* @param requestCode
* @param permissions
* @param grantResults
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
HxgPermissionHelper.requestPermissionsResult(this, requestCode, permissions);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_UNKNOWN_APP) {
ApkUtils.installApk(MainActivity.this,Constants.NEW_APK_PATH);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initPermission();
}
@HxgPermissionSuccess(requestCode = REQUESE_CODE)
private void success() {
Toast.makeText(this, "权限授权了", Toast.LENGTH_SHORT).show();
new ApkUpdataTask().execute();
}
@HxgPermissionFail(requestCode = REQUESE_CODE)
private void fail() {
Toast.makeText(this, "失败了", Toast.LENGTH_SHORT).show();
}
private void initPermission() {
HxgPermissionHelper.with(this)
.requestCode(REQUESE_CODE)
.requestPermission( Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE)
.request();
}
class ApkUpdataTask extends AsyncTask<Void,Void,Boolean>{
@Override
protected Boolean doInBackground(Void... voids) {
try {
//下载差分包
File patchFile = DownloadUtils.download(Constants.URL_PATCH_DOWNLOAD);
//获取当前apk文件 /data/app/my.apk
String oldfile=ApkUtils.getSourceApkPath(MainActivity.this,getPackageName());
String newfile=Constants.NEW_APK_PATH;
String patchfile=patchFile.getAbsolutePath();
//合并得到最新版本的APK文件
BsPatch.patch(oldfile,newfile,patchfile);
Log.e("huangxiaoguo","oldfile===>"+oldfile);
Log.e("huangxiaoguo","newfile===>"+newfile);
Log.e("huangxiaoguo","patchfile===>"+patchfile);
}catch (Exception e){
e.printStackTrace();
return false;
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
//安装
if (result){
Toast.makeText(MainActivity.this,"安装开始",Toast.LENGTH_LONG).show();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
boolean hasInstallPermission = MainActivity.this.getPackageManager().canRequestPackageInstalls();
if (!hasInstallPermission) {
//跳转至“安装未知应用”权限界面，引导用户开启权限
Uri selfPackageUri = Uri.parse("package:" + MainActivity.this.getPackageName());
Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES, selfPackageUri);
startActivityForResult(intent, REQUEST_CODE_UNKNOWN_APP);
return;
}else {
ApkUtils.installApk(MainActivity.this,Constants.NEW_APK_PATH);
}
}else {
ApkUtils.installApk(MainActivity.this,Constants.NEW_APK_PATH);
}
}
}
}
}
- .h头文件
/* DO NOT EDIT THIS FILE - it is machine generated */
#include - 合并c代码
/*-
* Copyright 2003-2005 Colin Percival
* Copyright 2012 Matthew Endsley
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "com_qufu_mergeupdates_utils_jni_BsPatch.h"
#include "bzip2/bzlib.c"
#include "bzip2/crctable.c"
#include "bzip2/compress.c"
#include "bzip2/decompress.c"
#include "bzip2/randtable.c"
#include "bzip2/blocksort.c"
#include "bzip2/huffman.c"
#include 源码地址：https://pan.baidu.com/s/1PDFmQU2gNxebqAQPPdvnuA或者：https://download.csdn.net/download/huangxiaoguo1/11594580