No resource identifier found for attribute 'layout_behavior' in package

Question

My application worked fine until I tried to add a library to it. After I added the library, Android Studio gives me the following error:

Error:(26) No

Answer 1

Note: The versions have changed by now, so replace below versions with the most recent ones.

The accepted answer gets rid of the error in case layout_behavior is not needed, however if you actually want to use:

app:layout_behavior="@string/appbar_scrolling_view_behavior"

Make sure to add the proper dependency to the build.gradle file of your module:

apply plugin: 'com.android.library'

android {
    compileSdkVersion 23
    buildToolsVersion "21.1.2"

   //Other stuff....
}

dependencies {

    //Importing the design library fixes the build
    compile 'com.android.support:design:23.1.0'

    //Other libraries....
}

I.e. add this line to your dependencies:

compile 'com.android.support:design:23.1.0'