CodeStyle Configuration to match Android Studio Defaults

checkstyle-as.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE module PUBLIC
    "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
    "https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name="Checker">
    <property name="severity" value="warning" />
    <property name="charset" value="UTF-8" />
    <module name="FileTabCharacter">
        <property name="severity" value="error" />
    </module>
    <module name="RegexpSingleline">
        <property name="severity" value="error" />
        <property name="format" value="[ \t]+$" />
        <property name="message" value="Trailing whitespace" />
    </module>

    <!--<module name="LineLength">
        <property name="severity" value="error" />
        <property name="ignorePattern"
            value="^package.*|^import.*|a href|href|http://|https://|ftp://" />
        <property name="max" value="100" />
    </module>
-->
    <module name="TreeWalker">
        <module name="AvoidStarImport">
            <property name="severity" value="error" />
            <property name="excludes"
                value="org.junit.Assert,org.mockito.Mockito,org.mockito.MockitoAnnotations,org.hamcrest.Matchers" />
        </module>
        <!--<module name="IllegalCatch">
            <property name="severity" value="info" />
        </module>-->
        <module name="RedundantImport">
            <message key="import.redundant"
                value="Redundant import: {0}. Use Ctrl+Shift+O (Eclipse) or Ctrl+Alt+O (Intellij) to sort imports" />
            <property name="severity" value="error" />
        </module>
        <module name="UnusedImports">
            <message key="import.unused"
                value="Unused import: {0}. Use Ctrl+Shift+O (Eclipse) or Ctrl+Alt+O (Intellij) to sort imports" />
            <property name="severity" value="error" />
            <property name="processJavadoc" value="true" />
        </module>
        <module name="PackageName">
            <property name="severity" value="error" />
            <property name="format" value="^[a-z]+(\.[a-z][a-z0-9_]{1,})*$" />
        </module>
        <module name="SimplifyBooleanExpression">
            <property name="severity" value="error" />
        </module>
        <module name="SimplifyBooleanReturn">
            <property name="severity" value="error" />
        </module>
        <module name="TypeName">
            <property name="severity" value="error" />
            <property name="format" value="^[A-Z][a-zA-Z0-9_]*$" />
        </module>
        <module name="ConstantName">
            <property name="severity" value="error" />
            <property name="format" value="^([A-Z][A-Z0-9]*(_[A-Z0-9]+)*)|(s[A-Z][a-zA-Z0-9]*)$" />
            <message key="name.invalidPattern"
                value="Static final field names must be all caps (e.g. int HEIGHT_PX) for 'true' constants, or start with s (e.g. AtomicInteger sNextId or Runnable sSuspendTask) for fields with mutable state or that don't 'feel' like constants." />
        </module>
        <module name="MethodName">
            <property name="severity" value="error" />
            <property name="format" value="^[a-z][a-zA-Z0-9_]*$" />
            <message key="name.invalidPattern"
                value="Method names should start with a lower case letter (e.g. getWidth())" />
        </module>
        <module name="ParameterName">
            <property name="severity" value="error" />
        </module>
        <module name="LocalFinalVariableName">
            <property name="severity" value="error" />
            <property name="format" value="^m|s|((([ms][a-z0-9])|([a-ln-rt-z]))[a-zA-Z0-9]*)$" />
            <message key="name.invalidPattern"
                value="Local variables should be camel-cased (e.g. int minWidth = 4)." />
        </module>
        <module name="LocalVariableName">
            <property name="severity" value="error" />
            <property name="format" value="^m|s|((([ms][a-z0-9])|([a-ln-rt-z]))[a-zA-Z0-9]*)$" />
            <message key="name.invalidPattern"
                value="Local variables should be camel-cased (e.g. int minWidth = 4)." />
        </module>
        <module name="LeftCurly">
            <property name="severity" value="error" />
        </module>
        <module name="RightCurly">
            <property name="severity" value="error" />
        </module>
        <!--<module name="NeedBraces">
            <message key="needBraces"
                value="if, for, while, and do require curly braces unless they are single-line statements." />
            <property name="severity" value="error" />
            <property name="tokens" value="LITERAL_FOR, LITERAL_WHILE, LITERAL_DO, LITERAL_IF" />
            <property name="allowSingleLineStatement" value="true" />
        </module>-->
        <module name="EmptyBlock">
            <property name="severity" value="error" />
            <property name="option" value="text" />
            <metadata name="altname" value="EmptyCatchBlock" />
        </module>
        <module name="UpperEll">
            <property name="severity" value="error" />
        </module>
        <module name="FallThrough">
            <property name="severity" value="error" />
            <property name="reliefPattern" value=".*" />
        </module>
        <module name="ModifierOrder">
            <property name="severity" value="error" />
        </module>
        <module name="WhitespaceAround">
            <property name="severity" value="error" />
            <property name="tokens"
                value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, EQUAL, GE, GT, LAND, LE, LITERAL_ASSERT, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, SL, SLIST, SL_ASSIGN, SR, SR_ASSIGN, STAR, STAR_ASSIGN, TYPE_EXTENSION_AND" />
            <property name="allowEmptyConstructors" value="true" />
            <property name="allowEmptyMethods" value="true" />
        </module>
        <module name="WhitespaceAfter">
            <property name="severity" value="error" />
            <property name="tokens" value="COMMA, SEMI, TYPECAST" />
        </module>
        <module name="NoWhitespaceAfter">
            <property name="severity" value="error" />
            <property name="tokens" value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS, UNARY_PLUS" />
        </module>
        <module name="NoWhitespaceBefore">
            <property name="severity" value="error" />
            <property name="allowLineBreaks" value="true" />
            <property name="tokens" value="SEMI, DOT, POST_DEC, POST_INC" />
        </module>
        <module name="GenericWhitespace">
            <property name="severity" value="error" />
            <message key="ws.followed"
                value="GenericWhitespace ''{0}'' is followed by whitespace." />
            <message key="ws.preceded"
                value="GenericWhitespace ''{0}'' is preceded with whitespace." />
            <message key="ws.illegalFollow"
                value="GenericWhitespace ''{0}'' should followed by whitespace." />
            <message key="ws.notPreceded"
                value="GenericWhitespace ''{0}'' is not preceded with whitespace." />
        </module>
        <module name="EmptyStatement">
            <property name="severity" value="error" />
        </module>
        <module name="NoFinalizer">
            <property name="severity" value="info" />
        </module>
        <module name="ParenPad">
            <property name="severity" value="error" />
        </module>
        <module name="MethodParamPad">
            <property name="severity" value="error" />
        </module>
        <module name="ImportOrder">
            <property name="severity" value="error" />
            <message key="import.ordering"
                value="Wrong order for {0} import. Use Ctrl+Shift+O (Eclipse) or Ctrl+Alt+O (Intellij) to sort imports. https://source.android.com/setup/code-style#order-import-statements" />
            <property name="groups"
                value="android, androidx, com.android, dalvik, com, gov, junit, libcore, net, org, java, javax" />
            <property name="ordered" value="true" />
            <property name="option" value="bottom" />
            <property name="separated" value="true" />
            <property name="sortStaticImportsAlphabetically" value="true"/>
        </module>
        <module name="SuppressionXpathSingleFilter">
            <property name="checks" value="ImportOrder"/>
            <property name="message" value="^'java\..*'.*"/>
        </module>
        <module name="SuppressionXpathSingleFilter">
            <property name="checks" value="ImportOrder"/>
            <property name="message" value="^'com\..*'.*"/>
        </module>
        <!--<module name="Indentation">
            <property name="severity" value="error" />
            <property name="basicOffset" value="4" />
            <property name="throwsIndent" value="8" />
            <property name="lineWrappingIndentation" value="8" />
        </module>-->
        <module name="OperatorWrap">
            <property name="severity" value="error" />
            <property name="option" value="NL" />
            <property name="tokens"
                value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR " />
        </module>
        <module name="OperatorWrap">
            <property name="severity" value="error" />
            <property name="option" value="eol" />
            <property name="tokens" value="ASSIGN" />
        </module>
        <module name="SeparatorWrap">
            <property name="severity" value="error" />
            <property name="tokens" value="DOT" />
            <property name="option" value="nl" />
        </module>
        <module name="SeparatorWrap">
            <property name="severity" value="error" />
            <property name="tokens" value="COMMA" />
            <property name="option" value="EOL" />
        </module>
        <module name="MissingOverride">
            <property name="severity" value="error" />
        </module>
        <module name="OneTopLevelClass">
            <property name="severity" value="error" />
        </module>
        <module name="StringLiteralEquality">
            <property name="severity" value="error" />
        </module>
        <module name="ArrayTypeStyle">
            <property name="severity" value="error" />
        </module>
        <module name="RedundantModifier">
            <property name="severity" value="error" />
        </module>
        <module name="OuterTypeFilename">
            <property name="severity" value="error" />
        </module>
        <module name="SuppressionCommentFilter">
            <property name="offCommentFormat" value="CHECKSTYLE:OFF IndentationCheck" />
            <property name="onCommentFormat" value="CHECKSTYLE:ON IndentationCheck" />
            <property name="checkFormat" value="IndentationCheck" />
        </module>
        <module name="SuppressionCommentFilter">
            <property name="offCommentFormat" value="CHECKSTYLE:OFF Generated code" />
            <property name="onCommentFormat" value="CHECKSTYLE:ON Generated code" />
        </module>
    </module>
</module>