Thanks for your response.
My bad, I provided a version that I was messing around with to get working. I had in fact tried with the backendless app initialized first. Hereās the stacktrace that comes up when I run it in the right order:
Code
void main() async {
WidgetsFlutterBinding.ensureInitialized();
Backendless.setUrl("https://eu-api.backendless.com");
await Backendless.initApp(BackendlessManager.APPLICATION_ID,
BackendlessManager.APPLICATION_ID, BackendlessManager.APPLICATION_ID);
await Firebase.initializeApp();
await BackendlessManager.registerForPushNotifications(); // crashes the app
runApp(MyApp());
}
Stack Trace
W/tlib.dicedatin( 6048): Accessing hidden method Landroid/app/ActivityThread;->currentApplication()Landroid/app/Application; (greylist, reflection, allowed)
E/AndroidRuntime( 6048): FATAL EXCEPTION: pool-BackendlessSDK-thread-0
E/AndroidRuntime( 6048): Process: com.widgetlib.dicedating, PID: 6048
E/AndroidRuntime( 6048): java.lang.ExceptionInInitializerError
E/AndroidRuntime( 6048): at com.backendless.HeadersManager.getInstance(HeadersManager.java:38)
E/AndroidRuntime( 6048): at com.backendless.Invoker.invokeSync(Invoker.java:95)
E/AndroidRuntime( 6048): at com.backendless.Invoker$1.run(Invoker.java:71)
E/AndroidRuntime( 6048): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
E/AndroidRuntime( 6048): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
E/AndroidRuntime( 6048): at java.lang.Thread.run(Thread.java:923)
E/AndroidRuntime( 6048): Caused by: java.lang.IllegalStateException: Backendless application was not initialized
E/AndroidRuntime( 6048): at com.backendless.AndroidBackendlessPrefs.getAuthKeys(AndroidBackendlessPrefs.java:119)
E/AndroidRuntime( 6048): at com.backendless.AndroidBackendlessPrefs.getApplicationId(AndroidBackendlessPrefs.java:50)
E/AndroidRuntime( 6048): at com.backendless.Backendless.getApplicationId(Backendless.java:277)
E/AndroidRuntime( 6048): at com.backendless.AndroidHeadersManager.<init>(AndroidHeadersManager.java:34)
E/AndroidRuntime( 6048): at com.backendless.AndroidHeadersManager.getInstance(AndroidHeadersManager.java:22)
E/AndroidRuntime( 6048): at com.backendless.HeadersManager.<clinit>(HeadersManager.java:28)
E/AndroidRuntime( 6048): ... 6 more
It still seems to be an issue with the application ID. Iāve double-checked that the Application/Android/iOS values Iāve inputted are correct - but the other issue I have, not being able to read from the database, may be caused by the same issue.
Edit:
I fixed the previous issue, which was cause by an await missing before setting the EU region (therefore the app not connecting properly). However, Iām still getting the issue registering firebase FCM tokens - Iāll look into it further on the firebase side of things but the error is coming from backendless:
Stack Trace
E/AndroidRuntime( 9793): FATAL EXCEPTION: main
E/AndroidRuntime( 9793): Process: com.widgetlib.dicedating, PID: 9793
E/AndroidRuntime( 9793): java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/firebase/iid/FirebaseInstanceId;
E/AndroidRuntime( 9793): at com.backendless.push.FCMRegistration$1.onComplete(FCMRegistration.java:51)
E/AndroidRuntime( 9793): at com.google.android.gms.tasks.zzj.run(Unknown Source:4)
E/AndroidRuntime( 9793): at android.os.Handler.handleCallback(Handler.java:938)
E/AndroidRuntime( 9793): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 9793): at android.os.Looper.loop(Looper.java:223)
E/AndroidRuntime( 9793): at android.app.ActivityThread.main(ActivityThread.java:7656)
E/AndroidRuntime( 9793): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 9793): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
E/AndroidRuntime( 9793): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
E/AndroidRuntime( 9793): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.iid.FirebaseInstanceId" on path: DexPathList[[zip file "/data/app/~~GJpY-ue23YwXTWAI2L24IA==/com.widgetlib.dicedating-AX0HFmgF9skCp31oNjHZ5g==/base.apk"],nativeLibraryDirectories=[/data/app/~~GJpY-ue23YwXTWAI2L24IA==/com.widgetlib.dicedating-AX0HFmgF9skCp31oNjHZ5g==/lib/x86, /data/app/~~GJpY-ue23YwXTWAI2L24IA==/com.widgetlib.dicedating-AX0HFmgF9skCp31oNjHZ5g==/base.apk!/lib/x86, /system/lib, /system_ext/lib]]
E/AndroidRuntime( 9793): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:207)
E/AndroidRuntime( 9793): at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
E/AndroidRuntime( 9793): at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
E/AndroidRuntime( 9793): ... 9 more
The error comes up both for Backendless SDK 6.3.2 and 7.0.0.
Edit no. 2:
Really sorry, notice the āAndroid API keyā and āiOS API keyā arguments are just being given the App ID. This being fixed, Iām able to communicate with the backend (the other issue is solved), but Iām still getting a crash on registering push notifications.
Push notifications from firebase messaging work, but as soon as I add the āregister push notificationsā, the crash occurs.
Edit no. 3:
Registration code
static Future registerForPushNotifications() async {
if (await Backendless.isInitialized()) {
await Backendless.messaging.registerDevice(["default"]);
}
}
Details:
android/build.gradle
buildscript {
ext.kotlin_version = '1.3.50'
ext {
firebaseMessagingVersion = "21.0.0"
}
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.google.gms:google-services:4.3.5'
classpath 'com.android.tools.build:gradle:4.1.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
tasks.withType(JavaCompile) {
options.deprecation = true
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
android/app/build.gradle
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 30
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "com.widgetlib.dicedating"
minSdkVersion 16
targetSdkVersion 30
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
multiDexEnabled true
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation platform('com.google.firebase:firebase-bom:28.0.1')
implementation 'com.google.firebase:firebase-messaging:22.0.0'
implementation 'com.android.support:multidex:1.0.3'
}
andoird/app/src/main/AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.widgetlib.dicedating">
<application
android:label="dice_dating"
android:icon="@mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
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"
/>
<!-- Displays an Android View that continues showing the launch screen
Drawable until Flutter paints its first frame, then this splash
screen fades out. A splash screen is useful to avoid any visual
gap between the end of Android's launch screen and the painting of
Flutter's first frame. -->
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<service android:name="com.backendless.push.BackendlessFCMService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
<!-- 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>
</manifest>
