Crash with java.lang.NoClassDefFoundError after migrating to AndroidX

Question

I'm trying to compile and run a demo app that was written for an old Android version.

I have updated all the files to use the new androidx libraries. That included the gradle.build the manifest and layout files. It compiles properly but crashes on the main activity on setContentView(R.layout.activity_main);

From looking at the stack trace I can deduce that its related to the layout.xml file as the app crash when it set for the first time. But I could not find any problem with the layout file after migrating the FloatingActionButton from the old to the new deisgn librarey.

Any ideas?

Stack:

I/zygote: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
        at void androidx.core.view.ViewCompat.setOnApplyWindowInsetsListener(android.view.View, androidx.core.view.OnApplyWindowInsetsListener) (ViewCompat.java:2423)
        at android.view.ViewGroup androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:750)
        at void androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:630)
        at void androidx.appcompat.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:529)
        at void androidx.appcompat.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:161)
        at void com.example.android.emojify.MainActivity.onCreate(android.os.Bundle) (MainActivity.java:75)
        at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:6975)
        at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1213)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2770)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2892)
I/zygote:     at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1593)
I/zygote:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6541)
        at java.lang.Object 

build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.android.emojify"
        minSdkVersion 26
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    androidTestImplementation('androidx.test.espresso:espresso-core:3.1.0', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    implementation 'com.google.android.material:material:1.1.0-alpha07'
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'com.google.android.gms:play-services-vision:17.0.2'
    implementation 'com.jakewharton:butterknife:10.1.0'
    annotationProcessor 'com.jakewharton:butterknife-compiler:10.1.0'
    implementation 'com.jakewharton.timber:timber:4.7.1'
    testImplementation 'junit:junit:4.12'
}

and layout file:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.android.emojify.MainActivity">

    <ImageView
        android:id="@+id/image_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="@dimen/view_margin"
        android:contentDescription="@string/imageview_description"
        android:scaleType="fitStart" />

    <TextView
        android:id="@+id/title_text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/emojify_button"
        android:layout_centerHorizontal="true"
        android:layout_margin="@dimen/view_margin"
        android:text="@string/emojify_me"
        android:textAppearance="@style/TextAppearance.AppCompat.Display1" />

    <Button
        android:id="@+id/emojify_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="@string/go"
        android:textAppearance="@style/TextAppearance.AppCompat.Display1"/>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/clear_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:src="@drawable/ic_clear"
        android:visibility="gone"
        app:backgroundTint="@android:color/white"
        app:fabSize="mini" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/save_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="@dimen/fab_margins"
        android:layout_marginEnd="@dimen/fab_margins"
        android:layout_marginRight="@dimen/fab_margins"
        android:src="@drawable/ic_save"
        android:visibility="gone"
        app:backgroundTint="@android:color/white" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/share_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginBottom="@dimen/fab_margins"
        android:layout_marginLeft="@dimen/fab_margins"
        android:layout_marginStart="@dimen/fab_margins"
        android:src="@drawable/ic_share"
        android:visibility="gone"
        app:backgroundTint="@android:color/white" />

</RelativeLayout>

Answer 1

I had the same problem, after update dependency into build.grade file to androidx.appcompat:appcompat:1.3.0-alpha02 problem was solved.