VectorDrawable on pre-lollipop

activity.xml

<android.support.v7.widget.AppCompatImageView
  android:layout_width="200dp"
  android:layout_height="200dp"
  android:id="@+id/imageView1"
  android:src="@drawable/button"
 />
<ImageView
  android:layout_width="200dp"
  android:layout_height="200dp"
  android:id="@+id/imageView2"
  app:srcCompat="@drawable/button"
  />

build.gradle

android {
    defaultConfig {
    ...
        vectorDrawables.useSupportLibrary = true
    ...
    }
}

MainActivity.java

public class MainActivity extends AppCompatActivity {

    static {
        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
    }
...
}