open-keychain/OpenKeychain/src/main/res/values/attr.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <declare-styleable name="FoldableLinearLayout">
        <attr name="foldedLabel" format="string" />
        <attr name="unFoldedLabel" format="string" />
    </declare-styleable>

    <declare-styleable name="AspectRatioImageView">
        <attr name="aspectRatio" format="float" />
        <attr name="aspectRatioEnabled" format="boolean" />
        <attr name="dominantMeasurement">
            <enum name="width" value="0" />
            <enum name="height" value="1" />
        </attr>
    </declare-styleable>

    <!-- Taken from Matt Allen Password Strength View
        https://github.com/matt-allen/android-password-strength-indicator -->
    <declare-styleable name="PasswordStrengthView">
        <attr name="strength" format="enum">
            <enum name="weak" value="0" />
            <enum name="medium" value="1" />
            <enum name="strong" value="2" />
        </attr>
        <attr name="showGuides" format="boolean" />
        <attr name="color_fail" format="color" />
        <attr name="color_weak" format="color" />
        <attr name="color_strong" format="color" />
    </declare-styleable>

</resources>