技术介绍
技术 | 介绍 |
---|---|
热更新 | 修改某处我们需要进行少量修改的地方或者Bug,修复快,时效性高 |
增量更新 | 原有app的基础上只更新发生变化的地方,其余保持原样 |
升级更新 | 在当前的版本做了大的修改时,我们需要全部下载Apk进行升级 |
Robust的实现
流程:
1.集成 Robust,生成 apk。保存期间的混淆文件 mapping.txt,以及 Robust 生成记录文件 methodMap.robust
2.使用注解 @Modify 或者方法 RobustModify.modify() 标注需要修复的方法
3.开启补丁插件,执行生成 apk 命令,获得补丁包 patch.jar
4.通过推送或者接口的形式,通知 app 有补丁,需要修复 5.加载补丁文件不需要重新启动应用
一、添加依赖:
1.添加 classpath 'com.meituan.robust:gradle-plugin:0.3.3'
classpath 'com.meituan.robust:auto-patch-plugin:0.3.3'到build.gradle中
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
classpath 'com.meituan.robust:gradle-plugin:0.3.3'
classpath 'com.meituan.robust:auto-patch-plugin:0.3.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}}
2.添加 compile 'com.meituan.robust:robust:0.3.3'到app-build.gradle-dependencies中
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso- core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.meituan.robust:robust:0.3.3'
testCompile 'junit:junit:4.12'}
3.添加两种模式到app-build.gradle中,具体看注解
apply plugin: 'com.android.application'
apply plugin: 'auto-patch-plugin' //生成插件是打开
//apply plugin: 'robust'//生成Apk时打开
4.在app-build.gradle打开混淆,如果不打开混淆,编译Apk时将不生成mipping.txt文件,Robust更新会报错,找不到此文件,具体看后面
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.RoubstDemo
}
}
注意:程序需要签名,不签名会导致安装Apk时提示文件损坏,签名可参考此篇文章Android-热修复技术之AndFix
二、添加robust.xml到app根目录中,看注解:
true
false
false
true
false
true
true
com.ffcs.z.robustdemo
com.ffcs.z.robustdemo
注意:其中需要修改的为packname 、patchPackname 两个包名
robust配置完成
三、基本应用程序
需要开启的权限:
1.MainActivity
package com.ffcs.z.robustdemo;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import com.meituan.robust.PatchExecutor;
public class MainActivity extends AppCompatActivity {
Button btn;
Button seconde;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private void init() {
btn = (Button) findViewById(R.id.btn);
seconde= (Button) findViewById(R.id.btn_seconde);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new PatchExecutor(getApplicationContext(), new PatchManipulateImp(), new RobustCallBackSample()).start();
}
});
seconde.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(new Intent(MainActivity.this,SecondeActivity.class));
}
});
}}
声明两个按钮,一个更新按钮,一个跳转有bug的页面,其中需要注意的是更新所使用的方法为PatchExecutor,参数一、当前上下文,参数二,关联patch.jar的信息,参数三、回调
PatchManipulateImp .java
package com.ffcs.z.robustdemo;
import android.content.Context;
import android.os.Environment;
import android.util.Log;
import com.meituan.robust.Patch;
import com.meituan.robust.PatchManipulate;
import com.meituan.robust.RobustApkHashUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
/**
* Created by mivanzhang on 17/2/27.
* We recommend you rewrite your own PatchManipulate class ,adding your special patch Strategy,in the demo we just load the patch directly
* Pay attention to the difference of patch's LocalPath and patch's TempPath
* We recommend LocalPath store the origin patch.jar which may be encrypted,while TempPath is the true runnable jar
* 我们推荐继承PatchManipulate实现你们App独特的A补丁加载策略,其中setLocalPath设置补丁的原始路径,这个路径存储的补丁是加密过得,setTempPath存储解密之后的补丁,是可以执行的jar文件
*setTempPath设置的补丁加载完毕即刻删除,如果不需要加密和解密补丁,两者没有啥区别 */
public class PatchManipulateImp extends PatchManipulate {
/***
* connect to the network ,get the latest patches
* l联网获取最新的补丁
* @param context
*
* @return
*/
@Override
protected List fetchPatchList(Context context) {
//将app自己的robustApkHash上报给服务端,服务端根据robustApkHash来区分每一次apk build来给app下发补丁
//apkhash is the unique identifier for apk,so you cannnot patch wrong apk.
String robustApkHash = RobustApkHashUtils.readRobustApkHash(context);
Log.i("PatchManipulateImp","robustApkHash :" + robustApkHash);
//connect to network to get patch list on servers
//在这里去联网获取补丁列表
Patch patch = new Patch();
patch.setName("123");
//we recommend LocalPath store the origin patch.jar which may be encrypted,while TempPath is the true runnable jar
//LocalPath是存储原始的补丁文件,这个文件应该是加密过的,TempPath是加密之后的,TempPath下的补丁加载完毕就删除,保证安全性
//这里面需要设置一些补丁的信息,主要是联网的获取的补丁信息。重要的如MD5,进行原始补丁文件的简单校验,以及补丁存储的位置,这边推荐把补丁的储存位置放置到应用的私有目录下,保证安全性
patch.setLocalPath(Environment.getExternalStorageDirectory().getPath()+ File.separator+"robust"+File.separator + "patch");
//setPatchesInfoImplClassFullName 设置项各个App可以独立定制,需要确保的是setPatchesInfoImplClassFullName设置的包名是和xml配置项patchPackname保持一致,而且类名必须是:PatchesInfoImpl
//请注意这里的设置
patch.setPatchesInfoImplClassFullName("com.ffcs.z.robustdemo.PatchesInfoImpl");
List patches = new ArrayList();
patches.add(patch);
return patches;
}
/**
*
* @param context
* @param patch
* @return
*
* you can verify your patches here
*/
@Override
protected boolean verifyPatch(Context context, Patch patch) {
//do your verification, put the real patch to patch
//放到app的私有目录
patch.setTempPath(context.getCacheDir()+ File.separator+"robust"+File.separator + "patch");
Log.i("PatchManipulateImp","verifyPatch :" + context.getCacheDir()+ File.separator+"robust"+File.separator + "patch");
//in the sample we just copy the file
try {
copy(patch.getLocalPath(), patch.getTempPath());
}catch (Exception e){
e.printStackTrace();
throw new RuntimeException("copy source patch to local patch error, no patch execute in path "+patch.getTempPath());
}
return true;
}
public void copy(String srcPath,String dstPath) throws IOException {
Log.i("PatchManipulateImp","copy :"+srcPath );
File src=new File(srcPath);
if(!src.exists()){
throw new RuntimeException("source patch does not exist ");
}
File dst=new File(dstPath);
if(!dst.getParentFile().exists()){
dst.getParentFile().mkdirs();
}
InputStream in = new FileInputStream(src);
try {
OutputStream out = new FileOutputStream(dst);
try {
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
} finally {
out.close();
}
} finally {
in.close();
}
}
/**
*
* @param patch
* @return
*
* you may download your patches here, you can check whether patch is in the phone
*/
@Override
protected boolean ensurePatchExist(Patch patch) {
return true;
}}
RobustCallBackSample.java
package com.ffcs.z.robustdemo;
import android.util.Log;
import com.meituan.robust.Patch;
import com.meituan.robust.RobustCallBack;
public class RobustCallBackSample implements RobustCallBack {
@Override
public void onPatchListFetched(boolean result, boolean isNet) {
Log.i("RobustCallBack", "onPatchListFetched result: " + result);
}
@Override
public void onPatchFetched(boolean result, boolean isNet, Patch patch) {
Log.i("RobustCallBack", "onPatchFetched result: " + result);
Log.i("RobustCallBack", "onPatchFetched isNet: " + isNet);
Log.i("RobustCallBack", "onPatchFetched patch: " + patch.getName());
}
@Override
public void onPatchApplied(boolean result, Patch patch) {
Log.i("RobustCallBack", "onPatchApplied result: " + result);
Log.i("RobustCallBack", "onPatchApplied patch: " + patch.getName());
}
@Override
public void logNotify(String log, String where) {
Log.i("RobustCallBack", "logNotify log: " + log);
Log.i("RobustCallBack", "logNotify where: " + where);
}
@Override
public void exceptionNotify(Throwable throwable, String where) {
Log.e("RobustCallBack", "exceptionNotify where: " + where, throwable);
}}
2.SecondeActivity.java 第二个界面 声明了一个TextView控件
package com.ffcs.z.robustdemo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import com.meituan.robust.patch.annotaion.Modify;
public class SecondeActivity extends AppCompatActivity {
TextView t;
@Override
@Modify
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_seconde);
t= (TextView) findViewById(R.id.text);// t.setText("未修改");
t.setText("已经修改");
}}
四、编译生成Apk(PS:也就是有Bug(SecondeActivity.java中的TextView为“未修改”))
打开美团生成Apk模式
apply plugin: 'com.android.application'
//apply plugin: 'auto-patch-plugin' //生成插件是打开
apply plugin: 'robust'//生成Apk时打开
编译指令:gradlew clean assembleRelease --stacktrace --no-daemon
创建app/robust文件夹 将outputs/release中的mipping.txt和outputs/robust中的methodsMap.robust文件考到app/robust文件下
mipping.txt:该文件列出了原始的类,方法和字段名与混淆后代码间的映射。这个文件很重要,可以用它来翻译被混淆的代码
methodsMap.robust:该文件在打补丁的时候用来区别到底哪些方法需要被修复,所以有它才能打补丁
五、生成补丁包
1.打开美团补丁模式 app-build.gradle:
apply plugin: 'com.android.application'
apply plugin: 'auto-patch-plugin' //生成插件是打开
//apply plugin: 'robust'//生成Apk时打开
2.修改Bug
此处除了Modify还有Add等,有需要的可以了解一下
3.编译程序
将更新包考到手机robust文件夹中即可
更新时请按更新按钮
注意:手机需要手动开启存储权限,没有开启会报:未找到...../robust/patch.jar