Add the Android app: a WebView around public_html

A single Activity holding one WebView, in Java rather than Kotlin — for ~120 lines of setup Kotlin would only add its Gradle plugin, its stdlib in the APK and a third version to keep aligned with Gradle and AGP. One dependency: androidx.webkit 1.16.0. The assets are served from https://appassets.androidplatform.net through WebViewAssetLoader rather than file://. That is the part that matters: an https origin is a secure context, and localStorage — which holds every setting and the match in progress — is blocked on file://, so a saved game would silently vanish. Confirmed on device: force-quit mid-match and everything comes back. public_html stays the only copy of the web app. A task syncs it into the assets at build time, so the browser version and the app version cannot drift; the APK's index.html hashes identical to the working tree. sw.js is left out on purpose — it is cache-first, and a service-worker cache outlives an app upgrade, so it would serve a stale index.html with no way to clear it. The APK is the cache now. Three web APIs don't exist in a WebView, so the Activity supplies them: FLAG_KEEP_SCREEN_ON for navigator.wakeLock, native immersive mode for requestFullscreen(), and LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES so the panels' env(safe-area-inset-*) has something to report. textZoom is pinned to 100: the layout is built on clamp() and vw, and a large system font would scale the text inside it. The manifest declares no permissions whatsoever. Wiring note: AGP 9 refuses a Provider in sourceSets.assets.srcDir, since it can't tell generated from static directories. The sync is a task with a DirectoryProperty output, attached via androidComponents.onVariants, which is the supported path and carries the task dependency. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-11 19:10:38 +02:00
parent 6069ef270e
commit 9f2081a0c9
17 changed files with 653 additions and 0 deletions
@@ -0,0 +1,4 @@
 android/.gradle/
 android/build/
 android/app/build/
 android/local.properties
@@ -0,0 +1,78 @@
 import javax.inject.Inject
 plugins {
    id("com.android.application")
 }
 android {
    namespace = "nl.hansdezwart.bgclock"
    compileSdk = 36
    buildToolsVersion = "36.0.0"
    defaultConfig {
        applicationId = "nl.hansdezwart.bgclock"
        minSdk = 26
        targetSdk = 36
        versionCode = 1
        versionName = "1.0"
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }
    buildTypes {
        release {
            isMinifyEnabled = false
        }
    }
 }
 /**
 * The web app is not copied into the repo — it is read out of public_html at
 * build time, so the browser version and the app version cannot drift.
 *
 * sw.js is left behind on purpose: it is cache-first, and a service-worker cache
 * outlives an app upgrade, so it would go on serving the old index.html with no
 * way to clear it. Without the file the registration fails into its own .catch,
 * and the APK is the cache instead.
 */
 abstract class SyncWebAssets : DefaultTask() {
    @get:InputDirectory
    @get:PathSensitive(PathSensitivity.RELATIVE)
    abstract val source: DirectoryProperty
    @get:OutputDirectory
    abstract val outputDir: DirectoryProperty
    @get:Inject
    abstract val fs: FileSystemOperations
    @TaskAction
    fun run() {
        fs.sync {
            from(source) { exclude("sw.js") }
            into(outputDir)
        }
    }
 }
 val webAssets = tasks.register<SyncWebAssets>("syncWebAssets") {
    source.fileValue(rootProject.file("../public_html"))
 }
 // the Variant API, not sourceSets.assets.srcDir: AGP 9 refuses a Provider there
 // because it can't tell generated from static, and this way the task dependency
 // is carried automatically
 androidComponents {
    onVariants { variant ->
        variant.sources.assets?.addGeneratedSourceDirectory(webAssets, SyncWebAssets::outputDir)
    }
 }
 dependencies {
    // the only dependency: WebViewAssetLoader, which serves the assets over a
    // real https origin so they count as a secure context
    implementation("androidx.webkit:webkit:1.16.0")
 }
@@ -0,0 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- This app declares no permissions at all, deliberately. The clock lives
     entirely inside the APK and never makes a request, so it needs no INTERNET;
     there are no haptics, so it needs no VIBRATE. Keep it that way: the empty
     permission list is worth more than any feature that would spend it. -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.BgClock">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTask"
            android:screenOrientation="portrait"
            android:resizeableActivity="false"
            android:windowSoftInputMode="stateAlwaysHidden"
            android:configChanges="orientation|screenSize|screenLayout|smallestScreenSize|keyboardHidden|uiMode|density|fontScale|navigation|touchscreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 </manifest>
@@ -0,0 +1,141 @@
 package nl.hansdezwart.bgclock;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.View;
 import android.view.WindowInsets;
 import android.view.WindowInsetsController;
 import android.view.WindowManager;
 import android.webkit.WebResourceRequest;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import androidx.webkit.WebViewAssetLoader;
 /**
 * The whole app: one WebView holding the clock from public_html.
 *
 * The assets are served over https://appassets.androidplatform.net rather than
 * file:// because that is a secure context — localStorage, which holds every
 * setting and the match in progress, is blocked on file:// and the saved game
 * would silently vanish.
 */
 public class MainActivity extends Activity {
    private static final String ORIGIN = "https://appassets.androidplatform.net";
    private static final int INK = 0xFF332E2B;   // --bar, so there is no white flash
    private WebView web;
    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedState) {
        super.onCreate(savedState);
        // in a browser the page holds a screen wake lock; navigator.wakeLock
        // does not exist in a WebView, so the window keeps the screen on. The
        // page requests it unconditionally at boot, so always-on is parity.
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        // draw behind the cutout, so the CSS env(safe-area-inset-*) the panels
        // already use has something to report
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            getWindow().getAttributes().layoutInDisplayCutoutMode =
                    WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            getWindow().setDecorFitsSystemWindows(false);
        }
        final WebViewAssetLoader loader = new WebViewAssetLoader.Builder()
                .addPathHandler("/assets/", new WebViewAssetLoader.AssetsPathHandler(this))
                .build();
        web = new WebView(this);
        web.setBackgroundColor(INK);
        web.setOverScrollMode(View.OVER_SCROLL_NEVER);   // no rubber-band glow on a fixed page
        web.setVerticalScrollBarEnabled(false);
        web.setHorizontalScrollBarEnabled(false);
        WebSettings s = web.getSettings();
        s.setJavaScriptEnabled(true);
        s.setDomStorageEnabled(true);                    // localStorage: settings and the live match
        s.setMediaPlaybackRequiresUserGesture(false);    // the Web Audio tick after a resume
        s.setSupportZoom(false);
        s.setBuiltInZoomControls(false);
        // the layout is built on clamp() and vw; a large system font setting
        // would scale the text inside it and break the two big readouts
        s.setTextZoom(100);
        web.setWebViewClient(new WebViewClient() {
            @Override
            public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
                return loader.shouldInterceptRequest(request.getUrl());
            }
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                // the clock has no outbound links and no network permission;
                // refuse anything that isn't our own assets, whatever happens
                return !request.getUrl().toString().startsWith(ORIGIN);
            }
        });
        setContentView(web);
        web.loadUrl(ORIGIN + "/assets/index.html");
    }
    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        if (hasFocus) hideSystemBars();
    }
    /** The page calls requestFullscreen(), which a WebView ignores. This is that. */
    private void hideSystemBars() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            WindowInsetsController c = getWindow().getInsetsController();
            if (c != null) {
                c.hide(WindowInsets.Type.systemBars());
                c.setSystemBarsBehavior(
                        WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
            }
        } else {
            getWindow().getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        }
    }
    // forwarded so the page's visibilitychange fires — that is what calls
    // saveGame() and nudges the audio context back after backgrounding
    @Override
    protected void onPause() {
        super.onPause();
        if (web != null) web.onPause();
    }
    @Override
    protected void onResume() {
        super.onResume();
        if (web != null) web.onResume();
    }
    @Override
    protected void onDestroy() {
        if (web != null) {
            setContentView(new View(this));   // detach before destroying
            web.destroy();
            web = null;
        }
        super.onDestroy();
    }
 }
@@ -0,0 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Generated from public_html/icon-maskable-512.png. That icon is drawn for the
     web maskable safe zone (the middle 80%); an adaptive icon only guarantees the
     middle 66.7%. Scaling the art to 360 on a 432 canvas (0.667/0.80) lands its
     safe circle exactly on Android's, so no mask shape can clip it. -->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@color/ink" />
    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
    <monochrome android:drawable="@mipmap/ic_launcher_foreground" />
 </adaptive-icon>
@@ -0,0 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
    <background android:drawable="@color/ink" />
    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
    <monochrome android:drawable="@mipmap/ic_launcher_foreground" />
 </adaptive-icon>
@@ -0,0 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <!-- the CSS var named bar in index.html: the control bar, and the colour
         behind the launcher icon -->
    <color name="ink">#332E2B</color>
 </resources>
@@ -0,0 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <!-- matches short_name in manifest.webmanifest -->
    <string name="app_name">BG Clock</string>
 </resources>
@@ -0,0 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
    <!-- the platform Material theme, so the app needs no appcompat -->
    <style name="Theme.BgClock" parent="@android:style/Theme.Material.NoActionBar">
        <!-- the window is this colour before the WebView paints, so the launch
             never flashes white -->
        <item name="android:windowBackground">@color/ink</item>
        <item name="android:statusBarColor">@android:color/transparent</item>
        <item name="android:navigationBarColor">@android:color/transparent</item>
    </style>
 </resources>
@@ -0,0 +1,3 @@
 plugins {
    id("com.android.application") version "9.3.1" apply false
 }
@@ -0,0 +1,2 @@
 org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8
 android.useAndroidX=true
@@ -0,0 +1,9 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.0-bin.zip
 networkTimeout=10000
 retries=0
 retryBackOffMs=500
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -0,0 +1,248 @@
 #!/bin/sh
 #
 # Copyright © 2015 the original authors.
 #
 # 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
 #
 #      https://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.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 ##############################################################################
 #
 #   gradlew start up script for POSIX generated by Gradle.
 #
 #   Important for running:
 #
 #   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
 #       noncompliant, but you have some other compliant shell such as ksh or
 #       bash, then to run this script, type that shell name before the whole
 #       command line, like:
 #
 #           ksh gradlew
 #
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:
 #         * functions;
 #         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
 #           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
 #         * compound commands having a testable exit status, especially «case»;
 #         * various built-in commands including «command», «set», and «ulimit».
 #
 #   Important for patching:
 #
 #   (2) This script targets any POSIX shell, so it avoids extensions provided
 #       by Bash, Ksh, etc; in particular arrays are avoided.
 #
 #       The "traditional" practice of packing multiple parameters into a
 #       space-separated string is a well documented source of bugs and security
 #       problems, so this is (mostly) avoided, by progressively accumulating
 #       options in "$@", and eventually passing that to Java.
 #
 #       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
 #       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
 #       see the in-line comments for details.
 #
 #       There are tweaks for specific operating systems such as AIX, CygWin,
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
 #       https://github.com/gradle/gradle/blob/3d91ce3b8caaf77ad09f381f43615b715b53f72c/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
 #
 ##############################################################################
 # Attempt to set APP_HOME
 # Resolve links: $0 may be a link
 app_path=$0
 # Need this for daisy-chained symlinks.
 while
    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
    [ -h "$app_path" ]
 do
    ls=$( ls -ld "$app_path" )
    link=${ls#*' -> '}
    case $link in             #(
      /*)   app_path=$link ;; #(
      *)    app_path=$APP_HOME$link ;;
    esac
 done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
 APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
 warn () {
    echo "$*"
 } >&2
 die () {
    echo
    echo "$*"
    echo
    exit 1
 } >&2
 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
 case "$( uname )" in                #(
  CYGWIN* )         cygwin=true  ;; #(
  Darwin* )         darwin=true  ;; #(
  MSYS* | MINGW* )  msys=true    ;; #(
  NONSTOP* )        nonstop=true ;;
 esac
 # Determine the Java command to use to start the JVM.
 if [ -n "$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: $JAVA_HOME
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
    fi
 else
    JAVACMD=java
    if ! command -v java >/dev/null 2>&1
    then
        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
    fi
 fi
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
    case $MAX_FD in #(
      max*)
        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
        # shellcheck disable=SC2039,SC3045
        MAX_FD=$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
    case $MAX_FD in  #(
      '' | soft) :;; #(
      *)
        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
        # shellcheck disable=SC2039,SC3045
        ulimit -n "$MAX_FD" ||
            warn "Could not set maximum file descriptor limit to $MAX_FD"
    esac
 fi
 # Collect all arguments for the java command, stacking in reverse order:
 #   * args from the command line
 #   * the main class name
 #   * -classpath
 #   * -D...appname settings
 #   * --module-path (only if needed)
 #   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
    JAVACMD=$( cygpath --unix "$JAVACMD" )
    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    for arg do
        if
            case $arg in                                #(
              -*)   false ;;                            # don't mess with options #(
              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
                    [ -e "$t" ] ;;                      #(
              *)    false ;;
            esac
        then
            arg=$( cygpath --path --ignore --mixed "$arg" )
        fi
        # Roll the args list around exactly as many times as the number of
        # args, so each arg winds up back in the position where it started, but
        # possibly modified.
        #
        # NB: a `for` loop captures its iteration list before it begins, so
        # changing the positional parameters here affects neither the number of
        # iterations, nor the values presented in `arg`.
        shift                   # remove old arg
        set -- "$@" "$arg"      # push replacement arg
    done
 fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 # Collect all arguments for the java command:
 #   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
 set -- \
        "-Dorg.gradle.appname=$APP_BASE_NAME" \
        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
        "$@"
 # Stop when "xargs" is not available.
 if ! command -v xargs >/dev/null 2>&1
 then
    die "xargs is not available"
 fi
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
 #
 # In Bash we could simply go:
 #
 #   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
 #   set -- "${ARGS[@]}" "$@"
 #
 # but POSIX shell has neither arrays nor command substitution, so instead we
 # post-process each arg (as a line of input to sed) to backslash-escape any
 # character that might be a shell metacharacter, then use eval to reverse
 # that process (while maintaining the separation between arguments), and wrap
 # the whole thing up as a single "set" statement.
 #
 # This will of course break if any of these variables contains a newline or
 # an unmatched quote.
 #
 eval "set -- $(
        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
        xargs -n1 |
        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
        tr '\n' ' '
    )" '"$@"'
 exec "$JAVACMD" "$@"
@@ -0,0 +1,82 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem      https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@rem SPDX-License-Identifier: Apache-2.0
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem  gradlew startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables, and ensure extensions are enabled
 setlocal EnableExtensions
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
 for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@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="-Xmx64m" "-Xms64m"
@rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 echo. 1>&2
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
 echo. 1>&2
 echo Please set the JAVA_HOME variable in your environment to match the 1>&2
 echo location of your Java installation. 1>&2
 "%COMSPEC%" /c exit 1
 :findJavaFromJavaHome
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 if exist "%JAVA_EXE%" goto execute
 echo. 1>&2
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
 echo. 1>&2
 echo Please set the JAVA_HOME variable in your environment to match the 1>&2
 echo location of your Java installation. 1>&2
 "%COMSPEC%" /c exit 1
 :execute
@rem Setup the command line
@rem Execute gradlew
@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
@rem which allows us to clear the local environment before executing the java command
 endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel
 :exitWithErrorLevel
@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
 "%COMSPEC%" /c exit %ERRORLEVEL%
@@ -0,0 +1,18 @@
 pluginManagement {
    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
 }
 dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
    }
 }
 rootProject.name = "bgclock"
 include(":app")
		`@@ -0,0 +1,2 @@`
							`org.gradle.jvmargs=-Xmx2g -Dfile.encoding=UTF-8`
							`android.useAndroidX=true`