Flutter my app stuck at white screen after downloading from play store in some devices

Question

I released an app for android. I wanted to make some updates and after update, it started to freeze in starting as white screen. When I debug, it works perfectly in the same device which freezes after downloading from store. In emulator, I download the app from store and it works. What can be the problem causing that?

I use command flutter build appbundle --obfuscate --split-debug-info=somepath

build.gradle:

buildscript {
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath 'com.google.gms:google-services:4.3.5'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

pubspec.yaml:

environment:
  sdk: ">=2.10.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  http: ^0.13.1
  url_launcher: ^6.0.2
  flutter_secure_storage: ^3.3.5
  shared_preferences: ^2.0.5
  provider: ^5.0.0
  toast: ^0.1.5
  onesignal_flutter: ^2.6.2
  fl_chart: ^0.20.1
  intl: ^0.17.0
  device_info: ^2.0.0
  synchronized: ^3.0.0
  firebase_core: ^1.0.3
  firebase_performance: ^0.6.0+2
  flutter_localizations:
    sdk: flutter
  workmanager: ^0.4.0
  get_it: ^7.1.3
  image_picker: ^0.8.0+3


  

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  google_fonts: ^2.0.0



dev_dependencies:
  flutter_test:
    sdk: flutter


# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec

# The following section is specific to Flutter.
flutter:
  generate: true
  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  assets:
    - assets/
  #  - images/a_dot_ham.jpeg
  fonts:
    - family: Roboto
      fonts:
        - asset: fonts/Roboto-Medium.ttf
        - asset: fonts/Roboto-Regular.ttf
  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.dev/assets-and-images/#resolution-aware.

  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/assets-and-images/#from-packages

  # To add custom fonts to your application, add a fonts section here,
  # in this "flutter" section. Each entry in this list should have a
  # "family" key with the font family name, and a "fonts" key with a
  # list giving the asset and other descriptors for the font. For
  # example:
  # fonts:
  #   - family: Schyler
  #     fonts:
  #       - asset: fonts/Schyler-Regular.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/custom-fonts/#from-packages

I tried to make my gradle version 3.5.1 I also tried to delete the packages I added but it still freezes when downloading from store.

Edit: I see that error in logcat when app is starting:

[ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: PlatformException(Exception encountered, read, javax.crypto.BadPaddingException: error:1e000065:Cipher functions:OPENSSL_internal:BAD_DECRYPT
        at com.android.org.conscrypt.NativeCrypto.EVP_CipherFinal_ex(Native Method)
        at com.android.org.conscrypt.OpenSSLCipher$EVP_CIPHER.doFinalInternal(OpenSSLCipher.java:602)
        at com.android.org.conscrypt.OpenSSLCipher.engineDoFinal(OpenSSLCipher.java:365)
        at javax.crypto.Cipher.doFinal(Cipher.java:2055)
        at c.b.a.b.b.b(Unknown Source:32)
        at c.b.a.a.b(Unknown Source:11)
        at c.b.a.a.d(Unknown Source:7)
        at c.b.a.a.a(Unknown Source:0)
        at c.b.a.a$b.run(Unknown Source:134)
        at android.os.Handler.handleCallback(Handler.java:883)
        at android.os.Handler.dispatchMessage(Handler.java:100)
        at android.os.Looper.loop(Looper.java:237)
        at android.os.HandlerThread.run(HandlerThread.java:67)
    , null)

Edit 2: As I look-up, this may cause because of flutter_secure_storage package. I am doing a .read in my main and many people faced this issue as I see. What I do now is, I will try to change flutter_secure_storage version as long as I find the working version.

Answer 1

You need to allow HTTP traffic.network access permissions in your AndroidManifest.xml .

Check this answer.

Answer 2

The most common cause of this error is the device's android API version.

steps to solve this issue:

• Upgrade both targetSdkVersion and compileSdkVersion to the latest version(be the answer posted 30 is the last version).

• Run the app in release mode using the devices that show the error by terminal

flutter run --release

.

• May use firebase Crashlytics . to track issues/errors like this.