No resource identifier found for attribute '…' in package 'com.app…'

Question

I\'ve imported a project from Eclipse to Android studio. It utilizes a custom view:

xmlns:app="http://schemas.android.com/apk/res-auto"

Answer 1

I was facing the same problem and solved it using the below steps:

Add this in your app's build.gradle

android {
    defaultConfig {
        vectorDrawables.useSupportLibrary = true
    }
}

Use namespace:

xmlns:app="http://schemas.android.com/apk/res-auto"

Then use:

app:srcCompat="@drawable/your_vector_drawable_here"

Answer 2

this helps for me:

on your build.gradle:

implementation 'com.android.support:design:28.0.0'

Answer 3

I just changed:

xmlns:app="http://schemas.android.com/apk/res-auto" 

to:

xmlns:app="http://schemas.android.com/apk/lib/com.app.chasebank"

and it stopped generating the errors, com.app.chasebank is the name of the package. It should work according to this Stack Overflow : No resource identifier found for attribute 'adSize' in package 'com.google.example' main.xml

Answer 4

This also happened to me when a PercentageRelativeLayout https://developer.android.com/reference/android/support/percent/PercentRelativeLayout.html was used and the build was targeting Android 0 = 26. PercentageRelativeLayout layout is obsolete starting from Android O and obviously sometime was changed in the resource generation. Replacing the layout with a ConstraintLayout or just a RelativeLayout solved it.

Answer 5

I've been searching answer but couldn't find but finally I could fix this by adding play-service-ads dependency let's try this

*) File -> Project Structure... -> Under the module you can find app and there is a option called dependencies and you can add com.google.android.gms:play-services-ads:x.x.x dependency to your project

I faced this problem when I try to import eclipse project into android studio

Click here to see screenshot

Answer 6

You can also use lib-auto

 xmlns:app="http://schemas.android.com/apk/lib-auto"