CODEWITHSUNDEEP
androidflutter
Lucas Moreira
Lucas Moreira

Reputation: 506

Flutter local notification causing crash, only in the APK version

I had this app working before the 1.9 update, then a failure to build had to be worked around by switching the gradle version from 3.2.1 to 3.3.1

Ever since, any non-configuration calls to the local notification pluggin are met with this stacktrace:

E/flutter (22738): [ERROR:flutter/shell/platform/android/platform_view_android_jni.cc(39)] java.lang.AssertionError: java.lang.NoSuchFieldException: Drawable
E/flutter (22738):      at c.a.a.b.a.ja$a.<init>(:12)
E/flutter (22738):      at c.a.a.b.a.V.a(:5)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.b.a.p.a(:21)
E/flutter (22738):      at c.a.a.b.a.p.a(:37)
E/flutter (22738):      at c.a.a.b.a.p.a(:17)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.b.a.c.a(:5)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.p.a(:96)
E/flutter (22738):      at c.a.a.p.a(:86)
E/flutter (22738):      at c.a.a.p.a(:84)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.e(:7)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:49)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:157)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.b(:40)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:132)
E/flutter (22738):      at d.a.b.a.m$a.a(:2)
E/flutter (22738):      at io.flutter.embedding.engine.a.c.a(:14)
E/flutter (22738):      at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(:2)
E/flutter (22738):      at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (22738):      at android.os.MessageQueue.next(MessageQueue.java:326)
E/flutter (22738):      at android.os.Looper.loop(Looper.java:160)
E/flutter (22738):      at android.app.ActivityThread.main(ActivityThread.java:6762)
E/flutter (22738):      at java.lang.reflect.Method.invoke(Native Method)
E/flutter (22738):      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/flutter (22738):      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/flutter (22738): Caused by: java.lang.NoSuchFieldException: Drawable
E/flutter (22738):      at java.lang.Class.getField(Class.java:1601)
E/flutter (22738):      at c.a.a.b.a.ja$a.<init>(:6)
E/flutter (22738):      ... 26 more
E/flutter (22738): 
F/flutter (22738): [FATAL:flutter/shell/platform/android/platform_view_android_jni.cc(76)] Check failed: CheckException(env).

I made no changes to the code from the version that was working. The code used to configure the plugin is ran on init as follows

  void inicializarPluginNotificacoes() {
    flutterLocalNotificationsPlugin = new FlutterLocalNotificationsPlugin();
    var initializationSettingsAndroid = new AndroidInitializationSettings('@drawable/app_icon24');
    var initializationSettings = new InitializationSettings(initializationSettingsAndroid, null);
    flutterLocalNotificationsPlugin.initialize(initializationSettings, onSelectNotification: onSelectNotification);
  }

and the call to the plugin is made like this:

  Future marcarNotificacao(int id, int hora, int minuto, String texto, String titulo) async {
    var scheduledNotificationDateTime = new DateTime.now().add(new Duration(hours: hora, minutes: minuto));
    var androidPlatformChannelSpecifics = new AndroidNotificationDetails('ponto_unb', 'Ponto', 'Notificações para o ponto eletrônico');
    NotificationDetails platformChannelSpecifics = new NotificationDetails(androidPlatformChannelSpecifics, null);
    await flutterLocalNotificationsPlugin.cancel(id); // crashes
    await flutterLocalNotificationsPlugin.schedule(id, titulo, texto, scheduledNotificationDateTime, platformChannelSpecifics); // also crashes if the other one is not called first
  }

Now, the intresting thing is, the crash only takes place after installing the apk. On a development build with flutter run or a debug run the crash doesn't happen.

Things i've tried: - Checking the icon since the message mentions drawable. The configuration doesn't even run if the icon is not found.

I feel like there is some resource i'm missing, is there a way to obtain a more comprehensive look into the crash?

Upvotes: 12

Views: 6729

Answers (8)

miso01
miso01

Reputation: 462

I have faced the same problem. I added the following line to the proguard-rules.pro -keep class com.dexterous.** { *; } but nothing worked. Problem was that proguard-rules.pro file was located in the local notifications plugin library.

So I created a copy of this file in android/app directory and finally it works. I have spent almost 2 days on this issue.

Do not forget to add the following code in res/raw/keep.xml file to keep your icon resource for your notification file as shown here

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools"
    tools:keep="@drawable/*,@raw/slow_spring_board" />

Upvotes: 4

user2532428
user2532428

Reputation: 51

If you export release apk format so after installed crash the app. You have to make these steps:

  1. Added proguard-files.pro file Than you have to added bottom of the file this code
## flutter_local_notification plugin rules
-keep class com.dexterous.** { *; }
  1. Your build.gradle file have to be
buildTypes {

    release {
        signingConfig signingConfigs.release
        // Enables code shrinking, obfuscation, and optimization for only
        // your project's release build type.
        minifyEnabled false

        // Enables resource shrinking, which is performed by the
        // Android Gradle plugin.
        shrinkResources false

        // Includes the default ProGuard rules files that are packaged with
        // the Android Gradle plugin. To learn more, go to the section about
        // R8 configuration files.
        proguardFiles getDefaultProguardFile(
                'proguard-android-optimize.txt'),
                'proguard-rules.pro'
    }
}

Upvotes: 5

luisredondo
luisredondo

Reputation: 53

Basically what you should do is:

  1. Create a file called proguard-rules.pro
  2. Copy this and paste in the created file (proguard-rules.pro).
-keep class com.dexterous.** { *; }
  1. Build.

You can read more details about why to do this in the package documentation.

Upvotes: 1

tegar nugroho
tegar nugroho

Reputation: 41

i try to add:

-keep class com.dexterous.** { *; }

in proguard-rules.pro, but still got crash in APK version, and then i try to set false in

build.gradle
  buildTypes {
    release {
       minifyEnabled false
       shrinkResources false
       }
      }

and it works for me

Upvotes: 3

Leandro Carvalho
Leandro Carvalho

Reputation: 350

I had the same problem and these 2 changes works for me: (I'm building an appbundle)

1)

If you build an App Bundle Edit android/gradle.properties and add the flag: 

android.bundle.enableUncompressedNativeLibs=false

If you build an APK Make sure android/app/src/AndroidManifest.xml doesn’t set android:extractNativeLibs=false in the <application> tag.

2)

flutter build appbundle --no-shrink

https://flutter.dev/docs/deployment/android#r8

Upvotes: 2

Tayseer Dalati
Tayseer Dalati

Reputation: 308

Setting minifyEnabled false will disable your proguard!

you can add this rule -keepclassmembers enum * {*;} to your /android/app/proguard-rules.pro to fix this problem.

Upvotes: 2

Joao
Joao

Reputation: 616

I had the same problem and it was driving me nuts. It only happens on a release build and appears to be related to AndroidInitializationSettings('app_icon')

The flutter_local_notifications docs section on Android Integration says to add

-keep class com.dexterous.** { *; }

to /android/app/proguard-rules.pro

Upvotes: 39

Jos&#233; Dias
Jos&#233; Dias

Reputation: 86

I have the exact same issue.

I used the following:

buildTypes {
        release {
           minifyEnabled false
}
    }

Please note that this disables your proguard.

Upvotes: 3

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