diff --git a/android-studio-4/README.md b/android-studio-4/README.md
new file mode 100644
index 00000000..e025c26a
--- /dev/null
+++ b/android-studio-4/README.md
@@ -0,0 +1,47 @@
+# Sample Lint Checks
+
+This project shows how Android Studio 4 handles packaging of lint rules.
+
+## Lint Check Jar Library
+
+First, there's the lint check implementation itself. That's done in the
+"checks" project, which just applies the Gradle "java" plugin, and
+that project produces a jar. Note that the dependencies for the lint
+check project (other than its testing dependencies) must all be "compileOnly":
+
+    dependencies {
+        compileOnly "com.android.tools.lint:lint-api:$lintVersion"
+        compileOnly "com.android.tools.lint:lint-checks:$lintVersion"
+		...
+
+## Lint Check AAR Library
+
+Next, there's a separate Android library project, called "library". This
+library doesn't have any code on its own (though it could). However,
+in its build.gradle, it specifies this:
+
+    dependencies {
+        lintPublish project(':checks')
+    }
+
+This tells the Gradle plugin to take the output from the "checks" project
+and package that as a "lint.jar" payload inside this library's AAR file.
+When that's done, any other projects that depends on this library will
+automatically be using the lint checks.
+
+## App Modules
+
+Note that you don't have to go through the extra "library indirection"
+if you have a lint check that you only want to apply to one or more
+app modules. You can simply include the `lintChecks` dependency as shown
+above there as well, and then lint will include these rules when analyzing
+the project.
+
+## Lint Version
+
+The lint version of the libraries (specified in this project as the
+`lintVersion` variable in build.gradle) should be the same version
+that is used by the Gradle plugin.
+
+If the Gradle plugin version is *X*.*Y*.*Z*, then the Lint library
+version is *X+23*.*Y*.*Z*.
diff --git a/android-studio-4/build.gradle b/android-studio-4/build.gradle
new file mode 100644
index 00000000..12258f64
--- /dev/null
+++ b/android-studio-4/build.gradle
@@ -0,0 +1,27 @@
+buildscript {
+    ext {
+        gradlePluginVersion = '4.0.0-alpha08'
+        lintVersion = '27.0.0-alpha08'
+        kotlinVersion = '1.3.61'
+    }
+
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:$gradlePluginVersion"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
diff --git a/android-studio-4/checks/.gitignore b/android-studio-4/checks/.gitignore
new file mode 100644
index 00000000..6ccc6caa
--- /dev/null
+++ b/android-studio-4/checks/.gitignore
@@ -0,0 +1,3 @@
+/build
+lint-report.html
+lint-results.txt
diff --git a/android-studio-4/checks/build.gradle b/android-studio-4/checks/build.gradle
new file mode 100644
index 00000000..592fe5bd
--- /dev/null
+++ b/android-studio-4/checks/build.gradle
@@ -0,0 +1,25 @@
+apply plugin: 'java-library'
+apply plugin: 'kotlin'
+apply plugin: 'com.android.lint'
+
+lintOptions {
+    htmlReport true
+    htmlOutput file("lint-report.html")
+    textReport true
+    absolutePaths false
+    ignoreTestSources true
+}
+
+dependencies {
+    // For a description of the below dependencies, see the main project README
+    compileOnly "com.android.tools.lint:lint-api:$lintVersion"
+    compileOnly "com.android.tools.lint:lint-checks:$lintVersion"
+    compileOnly "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlinVersion"
+    testImplementation "junit:junit:4.13"
+    testImplementation "com.android.tools.lint:lint:$lintVersion"
+    testImplementation "com.android.tools.lint:lint-tests:$lintVersion"
+    testImplementation "com.android.tools:testutils:$lintVersion"
+}
+
+sourceCompatibility = "1.8"
+targetCompatibility = "1.8"
diff --git a/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleCodeDetector.kt b/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleCodeDetector.kt
new file mode 100644
index 00000000..14603725
--- /dev/null
+++ b/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleCodeDetector.kt
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.lint.checks
+
+import com.android.tools.lint.client.api.UElementHandler
+import com.android.tools.lint.detector.api.*
+import com.android.tools.lint.detector.api.Detector.UastScanner
+import org.jetbrains.uast.UElement
+import org.jetbrains.uast.ULiteralExpression
+import org.jetbrains.uast.evaluateString
+
+/**
+ * Sample detector showing how to analyze Kotlin/Java code.
+ * This example flags all string literals in the code that contain
+ * the word "lint".
+ */
+@Suppress("UnstableApiUsage")
+class SampleCodeDetector : Detector(), UastScanner {
+    override fun getApplicableUastTypes(): List<Class<out UElement?>>? {
+        return listOf(ULiteralExpression::class.java)
+    }
+
+    override fun createUastHandler(context: JavaContext): UElementHandler? {
+        // Note: Visiting UAST nodes is a pretty general purpose mechanism;
+        // Lint has specialized support to do common things like "visit every class
+        // that extends a given super class or implements a given interface", and
+        // "visit every call site that calls a method by a given name" etc.
+        // Take a careful look at UastScanner and the various existing lint check
+        // implementations before doing things the "hard way".
+        // Also be aware of context.getJavaEvaluator() which provides a lot of
+        // utility functionality.
+        return object : UElementHandler() {
+            override fun visitLiteralExpression(node: ULiteralExpression) {
+                val string = node.evaluateString() ?: return
+                if (string.contains("lint") && string.matches(Regex(".*\\blint\\b.*"))) {
+                    context.report(ISSUE, node, context.getLocation(node),
+                            "This code mentions `lint`: **Congratulations**")
+                }
+            }
+        }
+    }
+
+    companion object {
+        /** Issue describing the problem and pointing to the detector implementation */
+        @JvmField
+        val ISSUE: Issue = Issue.create(
+                // ID: used in @SuppressLint warnings etc
+                id = "ShortUniqueId",
+                // Title -- shown in the IDE's preference dialog, as category headers in the
+                // Analysis results window, etc
+                briefDescription = "Lint Mentions",
+                // Full explanation of the issue; you can use some markdown markup such as
+                // `monospace`, *italic*, and **bold**.
+                explanation = """
+                    This check highlights string literals in code which mentions the word `lint`. \
+                    Blah blah blah.
+
+                    Another paragraph here.
+                    """, // no need to .trimIndent(), lint does that automatically
+                category = Category.CORRECTNESS,
+                priority = 6,
+                severity = Severity.WARNING,
+                implementation = Implementation(
+                        SampleCodeDetector::class.java,
+                        Scope.JAVA_FILE_SCOPE))
+    }
+}
diff --git a/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleIssueRegistry.kt b/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleIssueRegistry.kt
new file mode 100644
index 00000000..f4c4f723
--- /dev/null
+++ b/android-studio-4/checks/src/main/java/com/example/lint/checks/SampleIssueRegistry.kt
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.lint.checks
+
+import com.android.tools.lint.client.api.IssueRegistry
+import com.android.tools.lint.detector.api.CURRENT_API
+
+/*
+ * The list of issues that will be checked when running <code>lint</code>.
+ */
+@Suppress("UnstableApiUsage")
+class SampleIssueRegistry : IssueRegistry() {
+    override val issues = listOf(SampleCodeDetector.ISSUE)
+
+    override val api: Int
+        get() = CURRENT_API
+}
\ No newline at end of file
diff --git a/android-studio-4/checks/src/main/resources/META-INF/services/com.android.tools.lint.client.api.IssueRegistry b/android-studio-4/checks/src/main/resources/META-INF/services/com.android.tools.lint.client.api.IssueRegistry
new file mode 100644
index 00000000..fa8542a3
--- /dev/null
+++ b/android-studio-4/checks/src/main/resources/META-INF/services/com.android.tools.lint.client.api.IssueRegistry
@@ -0,0 +1 @@
+com.example.lint.checks.SampleIssueRegistry
diff --git a/android-studio-4/checks/src/test/java/com/example/lint/checks/SampleCodeDetectorTest.kt b/android-studio-4/checks/src/test/java/com/example/lint/checks/SampleCodeDetectorTest.kt
new file mode 100644
index 00000000..d5427cb7
--- /dev/null
+++ b/android-studio-4/checks/src/test/java/com/example/lint/checks/SampleCodeDetectorTest.kt
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.lint.checks
+
+import com.android.tools.lint.checks.infrastructure.LintDetectorTest
+import com.android.tools.lint.detector.api.Detector
+import com.android.tools.lint.detector.api.Issue
+
+@Suppress("UnstableApiUsage")
+class SampleCodeDetectorTest : LintDetectorTest() {
+    fun testBasic() {
+        lint().files(
+                java("""
+                    package test.pkg;
+                    public class TestClass1 {
+                        // In a comment, mentioning "lint" has no effect
+                        private static String s1 = "Ignore non-word usages: linting";
+                        private static String s2 = "Let's say it: lint";
+                    }
+                    """
+                ).indented())
+                .run()
+                .expect("""
+                    src/test/pkg/TestClass1.java:5: Warning: This code mentions lint: Congratulations [ShortUniqueId]
+                        private static String s2 = "Let's say it: lint";
+                                                   ~~~~~~~~~~~~~~~~~~~~
+                    0 errors, 1 warnings
+                    """
+                )
+    }
+
+    override fun getDetector(): Detector {
+        return SampleCodeDetector()
+    }
+
+    override fun getIssues(): List<Issue> {
+        return listOf(SampleCodeDetector.ISSUE)
+    }
+}
\ No newline at end of file
diff --git a/android-studio-4/gradle.properties b/android-studio-4/gradle.properties
new file mode 100644
index 00000000..aac7c9b4
--- /dev/null
+++ b/android-studio-4/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
diff --git a/android-studio-4/gradle/wrapper/gradle-wrapper.jar b/android-studio-4/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..13372aef
Binary files /dev/null and b/android-studio-4/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/android-studio-4/gradle/wrapper/gradle-wrapper.properties b/android-studio-4/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..0755eca4
--- /dev/null
+++ b/android-studio-4/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Fri Sep 01 06:52:38 PDT 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-rc-1-all.zip
diff --git a/android-studio-4/gradlew b/android-studio-4/gradlew
new file mode 100755
index 00000000..9d82f789
--- /dev/null
+++ b/android-studio-4/gradlew
@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/android-studio-4/gradlew.bat b/android-studio-4/gradlew.bat
new file mode 100644
index 00000000..8a0b282a
--- /dev/null
+++ b/android-studio-4/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/android-studio-4/library/.gitignore b/android-studio-4/library/.gitignore
new file mode 100644
index 00000000..796b96d1
--- /dev/null
+++ b/android-studio-4/library/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/android-studio-4/library/build.gradle b/android-studio-4/library/build.gradle
new file mode 100644
index 00000000..2261372a
--- /dev/null
+++ b/android-studio-4/library/build.gradle
@@ -0,0 +1,18 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 29
+    defaultConfig {
+        minSdkVersion 15
+        targetSdkVersion 29
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+/** Package the given lint checks library into this AAR  */
+dependencies {
+    lintPublish project(':checks')
+}
diff --git a/android-studio-4/library/src/main/AndroidManifest.xml b/android-studio-4/library/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..843049f7
--- /dev/null
+++ b/android-studio-4/library/src/main/AndroidManifest.xml
@@ -0,0 +1,3 @@
+<manifest package="com.example.lint.library">
+
+</manifest>
diff --git a/android-studio-4/settings.gradle b/android-studio-4/settings.gradle
new file mode 100644
index 00000000..b613efff
--- /dev/null
+++ b/android-studio-4/settings.gradle
@@ -0,0 +1 @@
+include ':checks', ':library'