Can't use srcCompat for ImageViews in android

Don't

android:srcCompat="@drawable/wallpaper"

Do

app:srcCompat="@drawable/wallpaper"

as it srcCompat attribute is actually defined within AppCompat library.

Important you will need to add appropriate namespace for this.

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

Important

what you are getting it seems like it is just a lint error that can be ignored. I have tried and have the same error, but it is working correctly.

you can use tools:ignore="MissingPrefix" to avoid seeing this error temporarily.

Combining many answers into one answer:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@color/primary">


    <android.support.v7.widget.AppCompatImageView
        android:layout_width="300dp"
        android:layout_height="100dp"
        android:id="@+id/logoImageView"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        app:srcCompat="@drawable/my_logo_vector"
        android:tint="@color/white"
        />

</RelativeLayout>

This worked for me. No lint errors. Use AppCompatImageView.

First (in build.gradle)

defaultConfig {
    vectorDrawables.useSupportLibrary = true
}

Second

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:srcCompat="@drawable/ic_traffic_black_24dp"
    tools:ignore="MissingPrefix" />

Third

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

Here we go.