引言

Android编译报错：Duplicate class android.support.v4.app.INotificationSideChannel found in modules classes

具体报错信息

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Execution failed for task ':app:checkDebugDuplicateClasses'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
   > Duplicate class android.support.v4.app.INotificationSideChannel found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.app.INotificationSideChannel$Stub found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.app.INotificationSideChannel$Stub$Proxy found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.IResultReceiver found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.IResultReceiver$Stub found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.IResultReceiver$Stub$Proxy found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.ResultReceiver found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.ResultReceiver$1 found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.ResultReceiver$MyResultReceiver found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)
     Duplicate class android.support.v4.os.ResultReceiver$MyRunnable found in modules core-1.3.2-runtime (androidx.core:core:1.3.2) and support-compat-25.3.1-runtime (com.android.support:support-compat:25.3.1)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

解决办法

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#需要在gradle.properties中添加代码
android.enableJetifier=true