app:srcCompat - Vector drawable shows up in design preview, but doesn't show up in app

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drawable/information.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
        android:width="24dp"
        android:height="24dp"
        android:viewportWidth="24.0"
        android:viewportHeight="24.0">
    <path
        android:fillColor="#FF000000"
        android:pathData="M13,9H11V7H13M13,17H11V11H13M12,2A10,10 0,0 0,2 12A10,10 0,0 0,12 22A10,10 0,0 0,22 12A10,10 0,0 0,12 2Z"/>
</vector>

LayoutofCardView.xml

<ImageView
    android:layout_width="24dp"
    android:background="#f00"
    android:layout_height="24dp"
    android:id="@+id/informationImageView"
    app:srcCompat="@drawable/information"
    tools:src="@drawable/information"
    />

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.company"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        generatedDensities = []

    }
    aaptOptions {
        additionalParameters "--no-version-vectors"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    packagingOptions {
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/LICENSE.txt'
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.1'
    compile 'com.android.support:cardview-v7:23.2.1'
    compile 'com.android.support:recyclerview-v7:23.2.1'
    compile 'com.android.support:support-v4:23.2.1'
}

The image shows up correctly in the design pane of android studio. But when I run the app, the image doesn't show up. The image is in cardView, which is in recyclerviewfragment. other items render correctly only vector drawbles don't render.

Also, Lint error shows up in the layout file

unexpected namespace prefix "app" found for tag ImageView app:srcCompat
2 Answers
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