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

android android-studio android-view android-custom-view

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

android android-studio android-view android-custom-view

You can also use lib-auto

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

android android-studio android-view android-custom-view

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"

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