[package_info_plus] Migrate Android part to Kotlin

packages/package_info_plus/package_info_plus/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 1.4.0
+
+- Android: Migrate to Kotlin
+- Android: Update dependencies, build config updates
+- Android: Fix project title
+
 ## 1.3.1
 
 - Fix embedding issue in example

packages/package_info_plus/package_info_plus/README.md

@@ -2,11 +2,13 @@
 
 [![Flutter Community: package_info_plus](https://fluttercommunity.dev/_github/header/package_info_plus)](https://github.com/fluttercommunity/community)
 
+[![package_info_plus](https://github.com/fluttercommunity/plus_plugins/actions/workflows/package_info_plus.yaml/badge.svg)](https://github.com/fluttercommunity/plus_plugins/actions/workflows/package_info_plus.yaml)
 [![pub package](https://img.shields.io/pub/v/package_info_plus.svg)](https://pub.dev/packages/package_info_plus)
 
 <p class="center">
-<center><a href="https://flutter.dev/docs/development/packages-and-plugins/favorites" target="_blank" rel="noreferrer noopener"><img src="../../website/static/img/flutter-favorite-badge.png" width="100" alt="build"></a></center>
+<center><a href="https://flutter.dev/docs/development/packages-and-plugins/favorites" target="_blank" rel="noreferrer noopener"><img src="../../../website/static/img/flutter-favorite-badge.png" width="100" alt="build"></a></center>
 </p>
+
 This Flutter plugin provides an API for querying information about an
 application package.
 
@@ -24,7 +26,7 @@ application package. This works both on iOS and Android.
 ```dart
 import 'package:package_info_plus/package_info_plus.dart';
 
-... 
+...
 
 // Be sure to add this line if `PackageInfo.fromPlatform()` is called before runApp()
 WidgetsFlutterBinding.ensureInitialized();
@@ -54,5 +56,3 @@ Check out our documentation website to learn more. [Plus plugins documentation](
 
 Calling to `PackageInfo.fromPlatform()` before the `runApp()` call will cause an exception.
 See https://github.com/fluttercommunity/plus_plugins/issues/309
-
-**Important:** As of January 2021, the Flutter team is no longer accepting non-critical PRs for the original set of plugins in `flutter/plugins`, and instead they should be submitted in this project. [You can read more about this announcement here.](https://github.com/flutter/plugins/blob/master/CONTRIBUTING.md#important-note) as well as [in the Flutter 2 announcement blog post.](https://medium.com/flutter/whats-new-in-flutter-2-0-fe8e95ecc65)

packages/package_info_plus/package_info_plus/android/build.gradle

@@ -2,13 +2,16 @@ group 'io.flutter.plugins.packageinfo'
 version '1.0-SNAPSHOT'
 
 buildscript {
+    ext.kotlin_version = '1.6.10'
+
     repositories {
         google()
         mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.2'
+        classpath 'com.android.tools.build:gradle:7.1.1'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
@@ -20,6 +23,7 @@ rootProject.allprojects {
 }
 
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 31
@@ -31,4 +35,8 @@ android {
     lintOptions {
         disable 'InvalidPackage'
     }
+
+    dependencies {
+        implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    }
 }

packages/package_info_plus/package_info_plus/android/settings.gradle

@@ -1 +1 @@
-rootProject.name = 'package_info'
+rootProject.name = 'package_info_plus'

packages/package_info_plus/package_info_plus/android/src/main/kotlin/dev/fluttercommunity/plus/packageinfo/PackageInfoPlugin.kt

@@ -0,0 +1,130 @@
+package dev.fluttercommunity.plus.packageinfo
+
+import android.content.Context
+import android.content.pm.PackageInfo
+import android.content.pm.PackageManager
+import android.os.Build
+import io.flutter.embedding.engine.plugins.FlutterPlugin
+import io.flutter.embedding.engine.plugins.FlutterPlugin.FlutterPluginBinding
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+
+/** PackageInfoPlugin  */
+class PackageInfoPlugin : MethodCallHandler, FlutterPlugin {
+    private var applicationContext: Context? = null
+    private var methodChannel: MethodChannel? = null
+
+    /** Plugin registration.  */
+    override fun onAttachedToEngine(binding: FlutterPluginBinding) {
+        applicationContext = binding.applicationContext
+        methodChannel = MethodChannel(binding.binaryMessenger, CHANNEL_NAME)
+        methodChannel!!.setMethodCallHandler(this)
+    }
+
+    override fun onDetachedFromEngine(binding: FlutterPluginBinding) {
+        applicationContext = null
+        methodChannel!!.setMethodCallHandler(null)
+        methodChannel = null
+    }
+
+    override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
+        try {
+            if (call.method == "getAll") {
+                val packageManager = applicationContext!!.packageManager
+                val info = packageManager.getPackageInfo(applicationContext!!.packageName, 0)
+
+                val buildSignature = getBuildSignature(packageManager)
+
+                val infoMap = HashMap<String, String>()
+                infoMap.apply {
+                    put("appName", info.applicationInfo.loadLabel(packageManager).toString())
+                    put("packageName", applicationContext!!.packageName)
+                    put("version", info.versionName)
+                    put("buildNumber", getLongVersionCode(info).toString())
+                    if (buildSignature != null) put("buildSignature", buildSignature)
+                }.also { resultingMap ->
+                    result.success(resultingMap)
+                }
+            } else {
+                result.notImplemented()
+            }
+        } catch (ex: PackageManager.NameNotFoundException) {
+            result.error("Name not found", ex.message, null)
+        }
+    }
+
+    @Suppress("deprecation")
+    private fun getLongVersionCode(info: PackageInfo): Long {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            info.longVersionCode
+        } else {
+            info.versionCode.toLong()
+        }
+    }
+
+    @Suppress("deprecation", "PackageManagerGetSignatures")
+    private fun getBuildSignature(pm: PackageManager): String? {
+        return try {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                val packageInfo = pm.getPackageInfo(
+                    applicationContext!!.packageName,
+                    PackageManager.GET_SIGNING_CERTIFICATES
+                )
+                val signingInfo = packageInfo.signingInfo ?: return null
+
+                if (signingInfo.hasMultipleSigners()) {
+                    signatureToSha1(signingInfo.apkContentsSigners.first().toByteArray())
+                } else {
+                    signatureToSha1(signingInfo.signingCertificateHistory.first().toByteArray())
+                }
+            } else {
+                val packageInfo = pm.getPackageInfo(
+                    applicationContext!!.packageName,
+                    PackageManager.GET_SIGNATURES
+                )
+                val signatures = packageInfo.signatures
+
+                if (signatures.isNullOrEmpty() || packageInfo.signatures.first() == null) {
+                    null
+                } else {
+                    signatureToSha1(signatures.first().toByteArray())
+                }
+            }
+        } catch (e: PackageManager.NameNotFoundException) {
+            null
+        } catch (e: NoSuchAlgorithmException) {
+            null
+        }
+    }
+
+    // Credits https://gist.github.com/scottyab/b849701972d57cf9562e
+    @Throws(NoSuchAlgorithmException::class)
+    private fun signatureToSha1(sig: ByteArray): String {
+        val digest = MessageDigest.getInstance("SHA1")
+        digest.update(sig)
+        val hashText = digest.digest()
+        return bytesToHex(hashText)
+    }
+
+    // Credits https://gist.github.com/scottyab/b849701972d57cf9562e
+    private fun bytesToHex(bytes: ByteArray): String {
+        val hexArray = charArrayOf(
+            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
+        )
+        val hexChars = CharArray(bytes.size * 2)
+        var v: Int
+        for (j in bytes.indices) {
+            v = bytes[j].toInt() and 0xFF
+            hexChars[j * 2] = hexArray[v ushr 4]
+            hexChars[j * 2 + 1] = hexArray[v and 0x0F]
+        }
+        return String(hexChars)
+    }
+
+    companion object {
+        private const val CHANNEL_NAME = "dev.fluttercommunity.plus/package_info"
+    }
+}

packages/package_info_plus/package_info_plus/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip

packages/package_info_plus/package_info_plus/pubspec.yaml

@@ -1,6 +1,6 @@
 name: package_info_plus
 description: Flutter plugin for querying information about the application package, such as CFBundleVersion on iOS or versionCode on Android.
-version: 1.3.1
+version: 1.4.0
 homepage: https://plus.fluttercommunity.dev/
 repository: https://github.com/fluttercommunity/plus_plugins/tree/main/packages/