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[jni_flutter] Fix release mode crash (#3285)
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‎pkgs/jni_flutter/CHANGELOG.md‎

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## 1.0.1
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- Add an example app.
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- Fixed release mode crash by adding Proguard rules to preserve plugin Java
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classes.
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## 1.0.0
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- Initial version: Adds the `androidApplicationContext` and

‎pkgs/jni_flutter/android/build.gradle‎

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defaultConfig {
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minSdk 21
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consumerProguardFiles 'consumer-rules.pro'
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}
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buildTypes {
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release {
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minifyEnabled false
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}
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}
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compileOptions {

‎pkgs/jni_flutter/example/.gitignore‎

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# Miscellaneous
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*.class
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*.log
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*.pyc
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*.swp
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.DS_Store
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.atom/
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.build/
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.buildlog/
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.history
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.svn/
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.swiftpm/
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migrate_working_dir/
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# IntelliJ related
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*.iml
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*.ipr
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*.iws
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.idea/
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# The .vscode folder contains launch configuration and tasks you configure in
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# VS Code which you may wish to be included in version control, so this line
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# is commented out by default.
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#.vscode/
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# Flutter/Dart/Pub related
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**/doc/api/
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**/ios/Flutter/.last_build_id
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.dart_tool/
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.flutter-plugins-dependencies
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.pub-cache/
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.pub/
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/build/
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/coverage/
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# Symbolication related
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app.*.symbols
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# Obfuscation related
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app.*.map.json
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# Android Studio will place build artifacts here
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/android/app/debug
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/android/app/profile
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/android/app/release

‎pkgs/jni_flutter/example/.metadata‎

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# This file tracks properties of this Flutter project.
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# Used by Flutter tool to assess capabilities and perform upgrades etc.
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#
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# This file should be version controlled and should not be manually edited.
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version:
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revision: "8a7560de18b75b32f7143f62b4a58faad562ed81"
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channel: "master"
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project_type: app
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# Tracks metadata for the flutter migrate command
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migration:
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platforms:
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- platform: root
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create_revision: 8a7560de18b75b32f7143f62b4a58faad562ed81
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base_revision: 8a7560de18b75b32f7143f62b4a58faad562ed81
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- platform: android
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create_revision: 8a7560de18b75b32f7143f62b4a58faad562ed81
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base_revision: 8a7560de18b75b32f7143f62b4a58faad562ed81
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# User provided section
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# List of Local paths (relative to this file) that should be
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# ignored by the migrate tool.
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#
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# Files that are not part of the templates will be ignored by default.
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unmanaged_files:
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- 'lib/main.dart'
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- 'ios/Runner.xcodeproj/project.pbxproj'

‎pkgs/jni_flutter/example/README.md‎

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# example
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A new Flutter project.

‎pkgs/jni_flutter/example/analysis_options.yaml‎

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include: package:flutter_lints/flutter.yaml

‎pkgs/jni_flutter/example/android/.gitignore‎

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gradle-wrapper.jar
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/.gradle
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/captures/
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/gradlew
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/gradlew.bat
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/local.properties
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GeneratedPluginRegistrant.java
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.cxx/
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# Remember to never publicly share your keystore.
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# See https://flutter.dev/to/reference-keystore
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key.properties
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**/*.keystore
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**/*.jks

‎pkgs/jni_flutter/example/android/app/build.gradle.kts‎

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plugins {
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id("com.android.application")
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id("kotlin-android")
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// The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
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id("dev.flutter.flutter-gradle-plugin")
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}
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android {
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namespace = "com.github.dart_lang.jni_flutter.example"
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compileSdk = flutter.compileSdkVersion
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ndkVersion = flutter.ndkVersion
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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kotlinOptions {
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jvmTarget = JavaVersion.VERSION_17.toString()
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}
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defaultConfig {
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// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
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applicationId = "com.github.dart_lang.jni_flutter.example"
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// You can update the following values to match your application needs.
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// For more information, see: https://flutter.dev/to/review-gradle-config.
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minSdk = flutter.minSdkVersion
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targetSdk = flutter.targetSdkVersion
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versionCode = flutter.versionCode
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versionName = flutter.versionName
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}
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buildTypes {
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release {
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// TODO: Add your own signing config for the release build.
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// Signing with the debug keys for now, so `flutter run --release` works.
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signingConfig = signingConfigs.getByName("debug")
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}
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}
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}
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flutter {
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source = "../.."
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}

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

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<!-- The INTERNET permission is required for development. Specifically,
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the Flutter tool needs it to communicate with the running application
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to allow setting breakpoints, to provide hot reload, etc.
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-->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest>

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

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

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