No resource identifier found for attribute 'srcCompat' in package 'learnapp.android.example.com.learnapp'

Question

I am getting Error:(26) No resource identifier found for attribute \'srcCompat\' in package \'learnapp.android.example.com.learnapp\' when I try to run my app.I

Answer 1

I just changed

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

to

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

I saw the answer here

Answer 2

I'm using the srcCompat api as follows.

<android.support.v7.widget.AppCompatImageView
      android:id="@+id/dashboard"
      android:layout_width="60dp"
      android:layout_height="60dp"
      srcCompat="@drawable/dash">

More info

Answer 3

Happens if you start updating Android Studio and canceled the update midway complete the update process and everything should be back to normal

Answer 4

Also happens when you have outdated versions of the support libraries.

I updated from:

compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile 'com.android.support:support-v4:23.1.1'
compile 'com.android.support:recyclerview-v7:23.1.1'

to:

compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.android.support:design:24.2.1'
compile 'com.android.support:support-v4:24.2.1'
compile 'com.android.support:recyclerview-v7:24.2.1'

(those were the newest versions at the moment I wrote this)

and the error is gone.

Answer 5

change app:srcCompat="@android:drawable/ic_dialog_email" for

android:src="@android:drawable/ic_dialog_email"

Answer 6

Add this vectorDrawables.useSupportLibrary = true to your app level build.gradle

defaultConfig {
    ...
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
    vectorDrawables.useSupportLibrary = true
}