fix: avoid reopening root when using multiple FlutterEngines (#153)

Author: JaffaKetchup

CHANGELOG.md

@@ -14,7 +14,11 @@ Many thanks to my sponsors, no matter how much or how little they donated. Spons
 
 # Changelog
 
-## [9.0.0] - "Just Another Rewrite" - 2024/04/XX
+## [9.0.1] - 2024/04/29
+
+* Fixed bug on initialisation, where using multiple/background `FlutterEngine`s would attempt to re-open a single ObjectBox Store (aka. root) multiple times
+
+## [9.0.0] - "Just Another Rewrite" - 2024/04/11
 
 This update has essentially rewritten FMTC from the ground up, over hundreds of hours. It focuses on:
 

example/.metadata

@@ -4,20 +4,20 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: "2524052335ec76bb03e04ede244b071f1b86d190"
-  channel: "stable"
+  revision: "29babcb32a591b9e5be8c6a6075d4fe605d46ad3"
+  channel: "beta"
 
 project_type: app
 
 # Tracks metadata for the flutter migrate command
 migration:
   platforms:
     - platform: root
-      create_revision: 2524052335ec76bb03e04ede244b071f1b86d190
-      base_revision: 2524052335ec76bb03e04ede244b071f1b86d190
-    - platform: windows
-      create_revision: 2524052335ec76bb03e04ede244b071f1b86d190
-      base_revision: 2524052335ec76bb03e04ede244b071f1b86d190
+      create_revision: 29babcb32a591b9e5be8c6a6075d4fe605d46ad3
+      base_revision: 29babcb32a591b9e5be8c6a6075d4fe605d46ad3
+    - platform: android
+      create_revision: 29babcb32a591b9e5be8c6a6075d4fe605d46ad3
+      base_revision: 29babcb32a591b9e5be8c6a6075d4fe605d46ad3
 
   # User provided section
 

example/android/app/build.gradle

@@ -1,77 +1,53 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
 def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
+def localPropertiesFile = rootProject.file("local.properties")
 if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
+    localPropertiesFile.withReader("UTF-8") { reader ->
         localProperties.load(reader)
     }
 }
 
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
 if (flutterVersionCode == null) {
-    flutterVersionCode = '9'
+    flutterVersionCode = "9"
 }
 
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
+def flutterVersionName = localProperties.getProperty("flutter.versionName")
 if (flutterVersionName == null) {
-    flutterVersionName = '9.0.0'
-}
-
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
-def keystoreProperties = new Properties()
-def keystorePropertiesFile = rootProject.file('key.properties')
-if (keystorePropertiesFile.exists()) {
-    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+    flutterVersionName = "9.0"
 }
 
 android {
-    compileSdkVersion rootProject.ext.compileSdkVersion
-
-    defaultConfig {
-        multiDexEnabled true
-    }
+    namespace = "dev.jaffaketchup.fmtc.demo"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        coreLibraryDesugaringEnabled true
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
     }
 
     defaultConfig {
-        applicationId "dev.jaffaketchup.fmtc.demo"
-        minSdkVersion rootProject.ext.minSdkVersion
-        targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
+        applicationId = "dev.jaffaketchup.fmtc.demo"
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutterVersionCode.toInteger()
+        versionName = flutterVersionName
     }
 
     buildTypes {
         release {
-            signingConfig signingConfigs.debug
+            signingConfig = signingConfigs.debug
         }
     }
 }
 
 flutter {
-    source '../..'
-}
-
-dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
+    source = "../.."
 }

example/android/app/src/debug/AndroidManifest.xml

@@ -1,10 +1,3 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.jaffaketchup.fmtc.demo">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET"/>
-    <queries>
-        <intent>
-            <action android:name="android.intent.action.VIEW" />
-            <data android:scheme="https" />
-        </intent>
-    </queries> 
 </manifest>

example/android/app/src/main/AndroidManifest.xml

@@ -1,16 +1,22 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dev.jaffaketchup.fmtc.demo">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET"/>
     <application
         android:label="FMTC Demo"
+        android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:launchMode="singleTop"
+            android:taskAffinity=""
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
             <meta-data
               android:name="io.flutter.embedding.android.NormalTheme"
               android:resource="@style/NormalTheme"
@@ -20,14 +26,21 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
     </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
     <queries>
         <intent>
-            <action android:name="android.intent.action.VIEW" />
-            <data android:scheme="https" />
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
         </intent>
-    </queries> 
+    </queries>
 </manifest>

example/android/app/src/main/kotlin/dev/org/fmtc/example/fmtc_example/MainActivity.kt renamed to example/android/app/src/main/kotlin/com/example/example/MainActivity.kt

@@ -2,5 +2,4 @@ package dev.jaffaketchup.fmtc.demo
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity() {
-}
+class MainActivity: FlutterActivity()