EventBus3.0 混淆解決方案

時間 2019-12-11

標籤 eventbus3.0 eventbus 混淆解決方案简体版

原文原文鏈接

EventBus 3.0採用註解處理，爲了提升效率可在編譯時經過註解處理器生成索引代碼。可是若是使用索引的話就不能混淆被Subscribe註解的方法。爲了可以提升效率使用索引而且混淆被Subscribe註解的方法可使***gradle.plugin.greenrobot.eventbus***插件html

[TOC]java

gradle.plugin.greenrobot.eventbus

gradle.plugin.greenrobot.eventbus is a gradle plugin for EventBus when use proguard.android

is supports EventBus version from 3.0 and above.
is supports com.android.tools.build:gradle version from 1.5 and above.
is supports android AnnotationProcessor
is supports android-apt

Process

1. hook gradle proguard task.git

2. parse mapping.txt.github

3. analyse class file.apache

4. replace method name.app

Integration

How to use

1. integration EventBus and EventBusAnnotationProcessormaven

2. add the jitpack repository and plugin dependency to your project build fileide

buildscript {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
    }
    dependencies {
        classpath 'com.github.JackyAnn:gradle.plugin.greenrobot.eventbus:v1.0'
    }
}

3. apply plugin to you module build filegradle

apply plugin: 'com.tobelinker.greenrobot.eventbus'

Sample

gradle.plugin.greenrobot.eventbus.sample

source code generate by EventBusAnnotationProcessor

package com.sample.index;

import org.greenrobot.eventbus.meta.SimpleSubscriberInfo;
import org.greenrobot.eventbus.meta.SubscriberMethodInfo;
import org.greenrobot.eventbus.meta.SubscriberInfo;
import org.greenrobot.eventbus.meta.SubscriberInfoIndex;

import org.greenrobot.eventbus.ThreadMode;

import java.util.HashMap;
import java.util.Map;

/** This class is generated by EventBus, do not edit. */
public class BusIndex implements SubscriberInfoIndex {
    private static final Map<Class<?>, SubscriberInfo> SUBSCRIBER_INDEX;

    static {
        SUBSCRIBER_INDEX = new HashMap<Class<?>, SubscriberInfo>();

        putIndex(new SimpleSubscriberInfo(com.tobelinker.greenrobot.eventbus.sample.BaseActivity.class, true,
                new SubscriberMethodInfo[] {
            new SubscriberMethodInfo("showMessage", com.tobelinker.greenrobot.eventbus.sample.Message.class),
            new SubscriberMethodInfo("showMessage", com.tobelinker.greenrobot.eventbus.sample.EventMessage.class),
        }));

        putIndex(new SimpleSubscriberInfo(com.tobelinker.greenrobot.eventbus.sample.MainActivity.class, true,
                new SubscriberMethodInfo[] {
            new SubscriberMethodInfo("showMessage", com.tobelinker.greenrobot.eventbus.sample.Message.class),
            new SubscriberMethodInfo("showMessage", com.tobelinker.greenrobot.eventbus.sample.EventMessage.class),
            new SubscriberMethodInfo("showMessage", String.class),
            new SubscriberMethodInfo("showMessage", Object.class),
        }));

    }

    private static void putIndex(SubscriberInfo info) {
        SUBSCRIBER_INDEX.put(info.getSubscriberClass(), info);
    }

    @Override
    public SubscriberInfo getSubscriberInfo(Class<?> subscriberClass) {
        SubscriberInfo info = SUBSCRIBER_INDEX.get(subscriberClass);
        if (info != null) {
            return info;
        } else {
            return null;
        }
    }
}

compiled code whith proguard

package com.a.a;

import java.util.*;
import a.a.a.a.*;
import com.tobelinker.greenrobot.eventbus.sample.*;

public class a implements d
{
    private static final Map<Class<?>, c> a;
    
    private static void a(final c c) {
        com.a.a.a.a.put(c.a(), c);
    }
    
    @Override
    public c a(final Class<?> clazz) {
        final c c = com.a.a.a.a.get(clazz);
        if (c != null) {
            return c;
        }
        return null;
    }
    
    static {
        a = new HashMap<Class<?>, c>();
        a(new a.a.a.a.b(com.tobelinker.greenrobot.eventbus.sample.a.class, true, new e[] { new e("showMessage", com.tobelinker.greenrobot.eventbus.sample.c.class), new e("showMessage", b.class) }));
        a(new a.a.a.a.b(MainActivity.class, true, new e[] { new e("showMessage", com.tobelinker.greenrobot.eventbus.sample.c.class), new e("showMessage", b.class), new e("showMessage", String.class), new e("showMessage", Object.class) }));
    }
}

the mapping.txt

com.sample.index.BusIndex -> com.a.a.a:
    java.util.Map SUBSCRIBER_INDEX -> a
    void <init>() -> <init>
    void putIndex(org.greenrobot.eventbus.meta.SubscriberInfo) -> a
    org.greenrobot.eventbus.meta.SubscriberInfo getSubscriberInfo(java.lang.Class) -> a
    void <clinit>() -> <clinit>
com.tobelinker.greenrobot.eventbus.sample.BaseActivity -> com.tobelinker.greenrobot.eventbus.sample.a:
    void <init>() -> <init>
    void showMessage(com.tobelinker.greenrobot.eventbus.sample.Message) -> a
    void showMessage(com.tobelinker.greenrobot.eventbus.sample.EventMessage) -> a
com.tobelinker.greenrobot.eventbus.sample.EventMessage -> com.tobelinker.greenrobot.eventbus.sample.b:
    java.lang.String message -> a
    void <init>(java.lang.String) -> <init>
    java.lang.String toString() -> toString
com.tobelinker.greenrobot.eventbus.sample.MainActivity -> com.tobelinker.greenrobot.eventbus.sample.MainActivity:
    org.greenrobot.eventbus.EventBus eventBus -> a
    void <init>() -> <init>
    void onCreate(android.os.Bundle) -> onCreate
    void onDestroy() -> onDestroy
    void showMessage(com.tobelinker.greenrobot.eventbus.sample.Message) -> a
    void showMessage(com.tobelinker.greenrobot.eventbus.sample.EventMessage) -> a
    void showMessage(java.lang.String) -> a
com.tobelinker.greenrobot.eventbus.sample.Message -> com.tobelinker.greenrobot.eventbus.sample.c:
    java.lang.String message -> a
    void <init>(java.lang.String) -> <init>
    java.lang.String toString() -> toString

the final code after processed

package com.a.a;

import java.util.*;
import a.a.a.a.*;
import com.tobelinker.greenrobot.eventbus.sample.*;

public class a implements d
{
    private static final Map<Class<?>, c> a;
    
    private static void a(final c c) {
        com.a.a.a.a.put(c.a(), c);
    }
    
    @Override
    public c a(final Class<?> clazz) {
        final c c = com.a.a.a.a.get(clazz);
        if (c != null) {
            return c;
        }
        return null;
    }
    
    static {
        a = new HashMap<Class<?>, c>();
        a(new a.a.a.a.b(com.tobelinker.greenrobot.eventbus.sample.a.class, true, new e[] { new e("a", com.tobelinker.greenrobot.eventbus.sample.c.class), new e("a", b.class) }));
        a(new a.a.a.a.b(MainActivity.class, true, new e[] { new e("a", com.tobelinker.greenrobot.eventbus.sample.c.class), new e("a", b.class), new e("a", String.class), new e("showMessage", Object.class) }));
    }
}