Error inflating class androidx.constraintlayout.ConstraintLayout after migration to androidx

Question

I just made a migration to androidx through Android Studio menu option Refactor -> Refactor to AndroidX

I'm getting the following error:

android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout

Any idea?

Stacktrace:

2018-10-19 00:25:58.128 28131-28131/com.midounoo.midounoo E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.midounoo.midounoo, PID: 28131
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.midounoo.midounoo/com.midounoo.midounoo.Base.MainActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2724)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2789)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
        at android.os.Handler.dispatchMessage(Handler.java:110)
        at android.os.Looper.loop(Looper.java:203)
        at android.app.ActivityThread.main(ActivityThread.java:6255)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)
     Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout
     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.constraintlayout.ConstraintLayout
     Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.constraintlayout.ConstraintLayout" on path: DexPathList[[zip file "/data/app/com.midounoo.midounoo-2/base.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.midounoo.midounoo-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.midounoo.midounoo-2/lib/arm64, /system/lib64, /vendor/lib64, /system/vendor/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at android.view.LayoutInflater.createView(LayoutInflater.java:609)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
        at com.midounoo.midounoo.Base.MainActivity.onCreate(MainActivity.java:43)
        at android.app.Activity.performCreate(Activity.java:6666)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2677)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2789)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
        at android.os.Handler.dispatchMessage(Handler.java:110)
        at android.os.Looper.loop(Looper.java:203)
        at android.app.ActivityThread.main(ActivityThread.java:6255)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)

Answer 1

I solve my problem by changing all occurrences of

androidx.constraintlayout.ConstraintLayout

to

androidx.constraintlayout.widget.ConstraintLayout

Answer 2

Add androidx.constraintlayout.widget.ConstraintLayout to the dependencies:

dependencies  {
    // https://mvnrepository.com/artifact/androidx.constraintlayout/constraintlayout
    implementation "androidx.constraintlayout:constraintlayout:1.1.3"
}

It's available on mavenCentral().

Answer 3

I had the same problem, I resolved it as follows:

In your dependecies if you have added

implementation 'androidx.constraintlayout:constraintlayout:1.x.x' that is correct

but in your xml layout file you have to use the widget as

androidx.constraintlayout.widget.ConstraintLayout

Answer 4

build.gradle => check dependencies version

implementation 'androidx.constraintlayout:constraintlayout:1.1.1'

to change

implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

solved the problem

Answer 5

I has same issue after:

• migration support library to androidx;
• increment targetSdkVesrsion to 29;

I also use:

implementation "uk.co.chrisjenx:calligraphy:2.3.0"

I tried all posts from this question, but none success.

I fix it by adding one string .disableCustomViewInflation() to Calligraphy init:

@Override
public void onCreate() {

    super.onCreate();
    // ...
    CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
            .setDefaultFontPath("fonts/Sans-Regular.ttf")
            .setFontAttrId(R.attr.fontPath)
            .disableCustomViewInflation() // <----- this fix
            .build());
    // ...
}

I hope next release of Calligraphy (Christopher Jenkins thanks for your great job) will fix it inside too.

Answer 6

If after adding mavenCentral() as a repository in your Gradle file and changing androidx.constraintlayout.ConstraintLayout to androidx.constraintlayout.widget.ConstraintLayout didn't solve your problem then try doing Invalidate cache and restart from the file menu. It worked for me.

Answer 7

make sure your project migrate to androidx completely , In my case I found :

<android.support.constraint.ConstraintLayout

instead of

  <androidx.constraintlayout.widget.ConstraintLayout

So change it and my problem fixed!

Answer 8

After clicking on Refactor -> Migrate to AndroidX , Make sure your all dependencies in the build.gradle(Module:app) is marked to the newest version.

If its not, dependency will appear in yellow highlighted color and you can change it by hovering the mouse over it.

Secondly, Change the ConstraintLayout tag in all XML layout files to

androidx.constraintlayout.widget.ConstraintLayout

For more safer option, clean your project and sync it again after the above steps.

Answer 9

Make Sure you have added the dependency for constraint layout

 dependencies  {
    implementation "androidx.constraintlayout:constraintlayout:1.1.3"
}

and have made the changes to

<androidx.constraintlayout.widget.ConstraintLayout instead of

<android.support.constraint.ConstraintLayout

Answer 10

I copied and pasted an existing ConstraintLayout tag from the xml, which was causing the issue for me. Simply deleting, and re-adding the ConstraintLayout tags in AndroidStudio from scratch fixed the issue for me.

Answer 11

Make sure to change to

<androidx.constraintlayout.widget.ConstraintLayout

instead of

<android.support.constraint.ConstraintLayout

and

<androidx.constraintlayout.widget.Barrier

instead of

<android.support.constraint.Barrier

Answer 12

I had this issue with Android Studio 4.0. I used android studio 4.0 for a couple of days without problems. Seemingly out of nowhere the designer view stopped working. I could only fix this by uninstalling android studio and installing the newest android studio version.

Answer 13

Since my implementation was already androidx.constraintlayout.ConstraintLayout, just using a Clean Project solved my problem.

Answer 14

yepp. mavenCentral() and correct dependencies solve my same problems

Answer 15

I had a similar error.

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.MainActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2757)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2818)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1557)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:163)
        at android.app.ActivityThread.main(ActivityThread.java:6393)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
    Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
    Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
    Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
        at android.view.LayoutInflater.createView(LayoutInflater.java:652)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:812)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:752)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:499)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:430)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
        at com.myapp.MainActivity.onCreate(MainActivity.java:23)
        at android.app.Activity.performCreate(Activity.java:6858)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2710)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2818)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1557)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:163)
        at android.app.ActivityThread.main(ActivityThread.java:6393)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
    Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/constraintlayout/widget/R$styleable;
        at androidx.constraintlayout.widget.ConstraintLayout.init(ConstraintLayout.java:590)
        at androidx.constraintlayout.widget.ConstraintLayout.<init>(ConstraintLayout.java:567)
        ... 23 more
    Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.constraintlayout.widget.R$styleable" on path: DexPathList[[zip file "/data/app/com.myapp-1/base.apk"],nativeLibraryDirectories=[/data/app/com.myapp-1/lib/arm64, /system/lib64, /vendor/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        ... 25

Following the recomendations:

add androidx.constraintlayout.ConstraintLayout to the dependencies:

dependencies  {
    implementation "androidx.constraintlayout:constraintlayout:1.1.3"
}

And the repository mavenCentral().

Works for me. I could compile the APK.

Answer 16

I updated the dependency, yet it did not resolve the error. Then I did a clean project and build and it is working now.

Answer 17

1. Find all default before to click Refactor -> Refactor to AndroidX
2. Open this https://developer.android.com/jetpack/androidx/migrate/class-mappings and find "android.support.v4.widget.DrawerLayout". In same line AndroidX class name is "androidx.drawerlayout.widget.DrawerLayout" copy it.

3. Replace all "android.support.v4.widget.DrawerLayout" to "androidx.drawerlayout.widget.DrawerLayout" in your project"s code, layout and menu. After all replace it will work.

I mean find mapping and use it in whole project.

Answer 18

change your constraint layout dependancy to implementation 'androidx.constraintlayout:constraintlayout:2.0.2'