Difference between app:srcCompat and android:src in Android’s layout XML
app:srcCompat is the most foolproof method of integrating vector drawables into your app.Vector drawables allow you to replace multiple png assets with a single vector graphic, defined in XML. While previously limited to Lollipop and higher devices Note As of Android Support Library 23.3.0, support vector drawables can only be loaded via app:srcCompat . you … Read more