Flutter - work in debug mode but crash in release apk

Question

I tried to use release apk on Android phone but the app crashed on startup

I've tried follow solutions, but it didn't work

1. set minifyEnabled and shrinkResources as false
2. change applicationId name
3. flutter build apk --release --split-per-abi --no-shrink

Here is the plugin list that I used

cupertino_icons: ^1.0.2
flutter_barcode_scanner: ^2.0.0
intl: ^0.17.0
http: ^0.13.4
shared_preferences: ^2.0.13
device_info: ^2.0.3

The Android phone version ⇒ 5

My flutter build apk message

Warning: Mapping new ns http://schemas.android.com/repository/android/common/02 to old ns http://schemas.android.com/repository/android/common/01
Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01

build.gradle

android {
    compileSdkVersion flutter.compileSdkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    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.example.transport"
        minSdkVersion flutter.minSdkVersion
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName

    }

    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
            minifyEnabled false
            shrinkResources false
        }
    }
}

Answer 1

Add buildToolsVersion "29.0.3" to your build.gradle

build.gradle

android{
  compileSdkVersion flutter.compileSdkVersion
  buildToolsVersion "29.0.3"
}