No resource found that matches the given name (at 'icon' with value '@mipmap/ic_launcher.png')

remove the file's extensions from android:icon

Change from

android:icon="@mipmap/ic_launcher.png"

to

 android:icon="@mipmap/ic_launcher"

and please make sure that you have ic_launcher.png in the mipmap folder

Edit:

From the screenshot you posted it looks like you are editing the wrong manifest file. Please be sure of editing the one under src/main/manifests