AndroidX迁移后，应用程序崩溃数据绑定错误

问题描述

我正在尝试将3年的旧项目迁移到AndroidX。该项目有3个模块。

• 应用
• sdk
• apis

应用是主要模块。该项目在运行时生成 sdk 和 apis 模块的AAR文件。而 app 使用 sdk 和 api

我为迁移所做的更改是：

1. 更新了app.gradle和gradlewrapper属性的目标版本
2. 迁移到AndroidX
3. 更新了所有模块的所有依赖关系。

应用启动时，会从应用模块启动活动，该活动运行良好。紧接着，它从 sdk 模块启动活动。但是在这里，应用程序在DataBindingUtil.setContentView崩溃。所有3个模块均启用了数据绑定。下面是堆栈跟踪。

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/android/databinding/library/baseAdapters/DataBinderMapperImpl;
    at com.xyz.sdk.DataBinderMapperImpl.collectDependencies(DataBinderMapperImpl.java:274)
    at androidx.databinding.MergedDataBinderMapper.addMapper(MergedDataBinderMapper.java:58)
    at androidx.databinding.MergedDataBinderMapper.addMapper(MergedDataBinderMapper.java:60)
    at androidx.databinding.DataBinderMapperImpl.<init>(DataBinderMapperImpl.java:5)
    at androidx.databinding.DataBindingUtil.<clinit>(DataBindingUtil.java:32)
    at androidx.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:284)
    at com.xyz.sdk.landing.LandingPageActivity.onCreate(LandingPageActivity.java:51)
    at android.app.Activity.performCreate(Activity.java:7136)
    at android.app.Activity.performCreate(Activity.java:7127)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "com.android.databinding.library.baseAdapters.DataBinderMapperImpl" on path: DexPathList[[zip file "/data/app/com.example.admin.myapplication-fYwVmwZfRLEOIXuh0dvhUg==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.admin.myapplication-fYwVmwZfRLEOIXuh0dvhUg==/lib/x86,/system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at com.xyz.sdk.DataBinderMapperImpl.collectDependencies(DataBinderMapperImpl.java:274) 
    at androidx.databinding.MergedDataBinderMapper.addMapper(MergedDataBinderMapper.java:58) 
    at androidx.databinding.MergedDataBinderMapper.addMapper(MergedDataBinderMapper.java:60) 
    at androidx.databinding.DataBinderMapperImpl.<init>(DataBinderMapperImpl.java:5) 
    at androidx.databinding.DataBindingUtil.<clinit>(DataBindingUtil.java:32) 
    at androidx.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:284) 
    at com.xyz.sdk.landing.LandingPageActivity.onCreate(LandingPageActivity.java:51) 
    at android.app.Activity.performCreate(Activity.java:7136) 
    at android.app.Activity.performCreate(Activity.java:7127) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:193) 
    at android.app.ActivityThread.main(ActivityThread.java:6669) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 

解决方法

我有同样的错误。如果您在多模块项目中工作，则需要为databinding模块（取决于使用它的库）启用app。

因此，我的解决方法是直接使用databinding将其添加到模块中，也将其添加到app模块中。

buildFeatures {
    dataBinding true
}

,

除了现有的答案。我必须在proguard中添加以下行。

-keep class androidx.databinding.** { *; }
-keep class * extends androidx.databinding.DataBinderMapper { *; }