問題一

主APP里面報(bào)錯(cuò)：

tools:replace specified at line: for attribute android:appComponentFactory, but no new value specified main manifest (this file), line

    Attribute application@appComponentFactory value=(androidx.core.app.CoreComponentFactory) from [androidx.core:core:1.3.1] AndroidManifest.xml:24:18-86
    is also present at [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91 value=(android.support.v4.app.CoreComponentFactory).
    Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:9:5-24:19 to override.

按照提示添加，

tools:replace="android:appComponentFactory"

仍然報(bào)錯(cuò)，

> Task :app:processDebugMainManifest FAILED
[androidx.versionedparcelable:versionedparcelable:1.1.0] C:\Users\username\.gradle\caches\transforms-2\files-2.1\ee32a41b299ebcf4e78d691344f52243\versionedparcelable-1.1.0\AndroidManifest.xml Warning:
    Package name 'androidx.versionedparcelable' used in: androidx.versionedparcelable:versionedparcelable:1.1.0, com.android.support:versionedparcelable:28.0.0.
H:\Android\practice\QQ\app\src\main\AndroidManifest.xml:9:5-25:19 Error:
    tools:replace specified at line:9 for attribute android:appComponentFactory, but no new value specified
H:\Android\practice\QQ\app\src\main\AndroidManifest.xml Error:
    Validation failed, exiting

最后在APP里面的清單文件加入栅迄，不用再別的module里面添加

 android:appComponentFactory="renyizifu任意字符鉴裹，不能為空衫贬，仍然報(bào)錯(cuò)千劈，但是不影響運(yùn)行"
 tools:replace="android:appComponentFactory"

2021-11-23 19:02:20.045 14285-14285/com.cc.qq E/LoadedApk: Unable to instantiate appComponentFactory
    java.lang.ClassNotFoundException: Didn't find class "com.cc.qq.AppComponentFactory" on path: DexPathList[[zip file "/data/app/com.cc.qq-VXr3KxaFWBhe82itimOPVA==/base.apk"],nativeLibraryDirectories=[/data/app/com.cc.qq-VXr3KxaFWBhe82itimOPVA==/lib/arm64, /system/lib64, /hw_product/lib64, /system/product/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:209)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at android.app.LoadedApk.createAppFactory(LoadedApk.java:270)
        at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:1005)
        at android.app.LoadedApk.getClassLoader(LoadedApk.java:1129)
        at android.app.LoadedApk.getResources(LoadedApk.java:1419)
        at android.app.ContextImpl.createAppContext(ContextImpl.java:2662)
        at android.app.ContextImpl.createAppContext(ContextImpl.java:2644)

繼續(xù)報(bào)錯(cuò)

Duplicate class android.support.v4.app.INotificationSideChannel found 
in modules core-1.3.1-runtime (androidx.core:core:1.3.1)
 and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)
Duplicate class android.support.v4.app.INotificationSideChannel found in modules core-1.3.1-runtime (androidx.core:core:1.3.1) and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)


Duplicate class android.support.v4.app.INotificationSideChannel$Stub found in modules core-1.3.1-runtime (androidx.core:core:1.3.1) and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)
Duplicate class android.support.v4.app.INotificationSideChannel$Stub$Proxy found in modules core-1.3.1-runtime (androidx.core:core:1.3.1) and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)
Duplicate class android.support.v4.graphics.drawable.IconCompatParc
....
Duplicate class androidx.core.graphics.drawable.IconCompatParcelizer found in modules core-1.3.1-runtime (androidx.core:core:1.3.1) and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)
Duplicate class androidx.core.internal.package-info found in modules core-1.3.1-runtime (androidx.core:core:1.3.1) and support-compat-28.0.0-runtime (com.android.support:support-compat:28.0.0)
Duplicate class androidx.versionedparcelable.CustomVersionedParcelable found in modules versionedparcelable-1.1.0-runtime (androidx.versionedparcelable:versionedparcelable:1.1.0) and versionedparcelable-28.0.0-runtime (com.android.support:versionedparcelable:28.0.0)
Duplicate class androidx.versionedparcelable

* What went wrong:
Execution failed for task ':app:mergeDebugJavaResource'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.MergeJavaResWorkAction
   > 2 files found with path 'META-INF/androidx.cursoradapter_cursoradapter.version'.
     Adding a packagingOptions block may help, please refer to
     https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html

....

解決方案：根目錄下的gradle.properties添加

# 這是因?yàn)榛旌现С謳爝汉住Ｍㄟ^添加這些行選擇androidX作為您的支持庫
android.useAndroidX=true
#上面一句默認(rèn)存在，添加下面一句
android.enableJetifier=true

總的添加代碼為

android.useAndroidX=true
# 這是因?yàn)榛旌现С謳焖市颉Ｍㄟ^添加這些行選擇androidX作為您的支持庫
android.enableJetifier=true

 android:appComponentFactory="任意字符"
 tools:replace="android:appComponentFactory"
    <application
        android:name=".App"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.QQ"
        android:appComponentFactory="任意字符x"
        tools:replace="android:appComponentFactory">

組件化注意事項(xiàng)

一忍些、commonLib包中引入第三方的庫為api 而非implementation，不然Module引入調(diào)用不到該庫依賴

    implementation 'androidx.appcompat:appcompat:1.2.0'

    // 替換成最新版本, 需要注意的是api
    api 'com.alibaba:arouter-api:1.5.2'
    annotationProcessor 'com.alibaba:arouter-compiler:1.5.2'

    api "androidx.room:room-runtime:$room_version"
    annotationProcessor "androidx.room:room-compiler:$room_version"
    // optional - RxJava2 support for Room
    api "androidx.room:room-rxjava2:$room_version"
    // optional - RxJava3 support for Room
    api "androidx.room:room-rxjava3:$room_version"

二坎怪、組件化里面的字module處理事項(xiàng)

1罢坝、組件里面的module里面需要合并AndroidManifest.xml資源、android 目錄下，跟defaultConfig 同級(jí)

2嘁酿、判斷是否為發(fā)布模式變更application和Library隙券，跟android節(jié)點(diǎn)同級(jí)，根目錄

3闹司、判斷是否為發(fā)布模式變更是否有applicationID等娱仔，android-defaultConfig 節(jié)點(diǎn)下

4、有自定義處理器需要添加選項(xiàng)配置參數(shù)defaultConfig 節(jié)點(diǎn)

比如order中

if (isRelease) {
// 如果是發(fā)布版本時(shí)游桩，各個(gè)模塊都不能獨(dú)立運(yùn)行
    apply plugin: 'com.android.library'
} else {
    apply plugin: 'com.android.application'
}
android {
    ...
    defaultConfig {
      ....
        if (!isRelease) {
            //  如果是集成化模式牲迫，不能有applicationId組件化模式能獨(dú)立運(yùn)行才能有applicationId
            applicationId "com.cc.order"
       }       

    
        // 這個(gè)方法接收三個(gè)非空的參數(shù)，第一個(gè)：確定值的類型借卧，第二個(gè)：指定key的名字盹憎，第三個(gè)：傳值（必須是String）
        // 為什么需要定義這個(gè)？因?yàn)閟rc代碼中有可能需要用到跨模塊交互铐刘，如果是組件化模塊顯然不行
        // 切記：不能在android根節(jié)點(diǎn)陪每，只能在defaultConfig或buildTypes節(jié)點(diǎn)下
        buildConfigField("boolean", "isRelease", String.valueOf(isRelease))

        // 在gradle文件中配置選項(xiàng)參數(shù)值（用于APT傳參接收）
        // 切記：必須寫在defaultConfig節(jié)點(diǎn)下
        javaCompileOptions {
            annotationProcessorOptions {
                arguments = [moduleName: project.getName(), packageNameForAPT: packageNameForAPT]
            }
        }
     // 配置資源路徑，方便測試環(huán)境镰吵，打包不集成到正式環(huán)境
    sourceSets {
        main {
            if (!isRelease) {
                // 如果是組件化模式檩禾，需要單獨(dú)運(yùn)行時(shí)
                manifest.srcFile 'src/main/debug/AndroidManifest.xml'
            } else {
                // 集成化模式，整個(gè)項(xiàng)目打包apk
                manifest.srcFile 'src/main/AndroidManifest.xml'
                java {
                    // release 時(shí) debug 目錄下文件不需要合并到主工程
                    exclude '**/debug/**'
                }
            }
        }
    }
}

三疤祭、清單文件合并子Module中在modulename->src->main->下創(chuàng)建debug文件盼产，跟java同級(jí)，復(fù)制AndroidManifest.xml到debug目錄中画株。

image.png

四辆飘、AutoService、SPI機(jī)制的resource谓传、跨進(jìn)程通信的aidl蜈项、清單文件合并的debug文件都在src->main目錄下

image.png

三、集成的問題

1续挟、各個(gè)module的布局一定不能名字重復(fù)

2紧卒、各個(gè)module的path路徑一定要注意不能重復(fù)

3、初始化ARouter的時(shí)候看看打印日志if環(huán)境诗祸，不然AROuter日志不打印

轉(zhuǎn)換異常跑芳，但是導(dǎo)包正常，一般是布局名字重復(fù)直颅，更改布局名字

2021-11-24 01:05:32.922 3684-3684/com.cc.qq E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.cc.qq, PID: 3684
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cc.qq/com.cc.personnal.MainActivity}: java.lang.ClassCastException: com.cc.qq.databinding.ActivityMainBindingImpl cannot be cast to com.cc.personnal.databinding.ActivityMainBinding
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4060)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4247)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:91)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2613)
        at android.os.Handler.dispatchMessage(Handler.java:110)
        at android.os.Looper.loop(Looper.java:219)
        at android.app.ActivityThread.main(ActivityThread.java:8668)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1109)
     Caused by: java.lang.ClassCastException: com.cc.qq.databinding.ActivityMainBindingImpl cannot be cast to com.cc.personnal.databinding.ActivityMainBinding
        at com.cc.personnal.MainActivity.onCreate(MainActivity.java:21)
        at android.app.Activity.performCreate(Activity.java:8214)
        at android.app.Activity.performCreate(Activity.java:8202)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1320)

各個(gè)module的path路徑一定要注意不能重復(fù)博个，不匹配的情況,寫成常量

package com.cc.common.arouter;

public class RouterPath {
    public static final String APP_GROUP="app";
    public static final String ORDER_GROUP="order";
    public static final String PERSONAL_GROUP="personal";


    //app
    public static final String ROUT_APP_MainActivity="/app/MainActivity";

    //order
    public static final String ROUT_ORDER_MainActivity="/order/MainActivity";

    //personal
    public static final String ROUT_PERSONAL_MainActivity="/pesonal/MainActivity";

}

3、注意初始化的BuildConfig不要弄錯(cuò)了功偿，沒有日志證明if為false

   // 這兩行必須寫在init之前盆佣，否則這些配置在init過程中將無效
        if (BuildConfig.DEBUG) {
            // 打印日志
            ARouter.openLog();
            // 開啟調(diào)試模式(如果在InstantRun模式下運(yùn)行，必須開啟調(diào)試模式！線上版本需要關(guān)閉,否則有安全風(fēng)險(xiǎn))
            ARouter.openDebug();
        }
        // 盡可能早共耍，推薦在Application中初始化
        ARouter.init(this);

四虑灰、注解處理器的問題，每個(gè)gradle文件下要添加注解處理器的生成目錄

android{
  ...
  defaultConfig{
   javaCompileOptions {
            annotationProcessorOptions {
                arguments = [AROUTER_MODULE_NAME: project.getName()]
            }
        }
  }
}

五痹兜、注解處理器dependencies下的依賴問題

1穆咐、commonLibrary依賴ARouter:api，透傳

2字旭、AppModule对湃、OrderModule、PersonalModule依賴commonLibrary:implementation

3遗淳、AppModule依賴OrderModule熟尉、PersonalModule:implementation

4、AppModule依賴了OrderModule洲脂、PersonalModule，可不依賴commonLirabry剧包，那AppModule依賴了OrderModule恐锦、PersonalModule改為api

五的點(diǎn)有問題驗(yàn)證，dependencies中最好都加上

 implementation project(':common') // 公共基礎(chǔ)庫

    implementation 'com.alibaba:arouter-api:1.5.2'
    annotationProcessor 'com.alibaba:arouter-compiler:1.5.2'