lint-demos/lint-demo-appcompat/lint.xml

<?xml version="1.0" encoding="UTF-8"?>
<lint>
    <issue id="LintBaseline" severity="ignore">
        <ignore regexp=".* filtered out because .* listed in the baseline file.*"/>
    </issue>
    <!-- Ignore all warnings for unused resources since this is not a real app. -->
    <issue id="UnusedResources" severity="ignore" />
    <!-- Ignore all warnings for missing icon density folders since this is not a real app. -->
    <issue id="IconMissingDensityFolder" severity="ignore" />
    <!-- Ignore all warnings for missing content description since this is not a real app. -->
    <issue id="ContentDescription" severity="ignore" />
</lint>