在迁移到 androidx 之后，对类 androidx.straintlayout 进行膨胀时出错

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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().

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

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最佳答案

I solve my problem by changing all occurrences of

androidx.constraintlayout.ConstraintLayout

to

androidx.constraintlayout.widget.ConstraintLayout

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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.

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build.gradle => check dependencies version

implementation 'androidx.constraintlayout:constraintlayout:1.1.1'

to change

implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

solved the problem

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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.

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

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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.

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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.

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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.

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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

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Find all default before to click Refactor -> Refactor to AndroidX
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.

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.

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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!

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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

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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

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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.

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

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

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None of the solution worked for me, looking closely at the exception stack trace:

 Caused by: android.content.res.Resources$NotFoundException: Resource "com.XXX.XXX:drawable/walpaper" (7f0800aa)  is not a Drawable (color or path): TypedValue{t=0x1/d=0x7f0800aa a=-1 r=0x7f0800aa}
at android.content.res.Resources.loadDrawableForCookie(Resources.java:2690)
at android.content.res.Resources.loadDrawable(Resources.java:2614)
at android.content.res.TypedArray.getDrawable(TypedArray.java:749)
at android.view.View.<init>(View.java:3791)
at android.view.ViewGroup.<init>(ViewGroup.java:524)
at android.view.ViewGroup.<init>(ViewGroup.java:520)
at android.view.ViewGroup.<init>(ViewGroup.java:516)

drawable background image loading was causing some issue on my old test device (newer devices load it just fine). Just removed the following line from my layouts it is working fine now, need to figure out how to set the background now..

 android:background="@drawable/walpaper"

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I had the issue with ImageFilterView converting jpg images to png solved the issue for me.