플머의 개발 연구소

firebase_admob: ^0.9.0+9

image_picker : ^0.6.2+1

위 두개의 패키지를 사용하고, 빌드하는데 다음과 같은 오류가 발생하였다.

WARNING: Conflict with dependency 'androidx.core:core' in project ':app'. Resolved versions for runtime
classpath (1.0.2) and compile classpath (1.0.0) differ. This can lead to runtime crashes. To resolve this issue follow
advice at https://developer.android.com/studio/build/gradle-tips#configure-project-wide-properties. Alternatively, you
can try to fix the problem by adding this snippet to
C:\temp\android\app\build.gradle:
[ +4 ms] dependencies {
[ +3 ms] implementation("androidx.core:core:1.0.2")
[ +1 ms] }
[ +2 ms] WARNING: Conflict with dependency 'androidx.annotation:annotation' in project ':app'. Resolved versions for
runtime classpath (1.0.2) and compile classpath (1.0.0) differ. This can lead to runtime crashes. To resolve this issue
follow advice at https://developer.android.com/studio/build/gradle-tips#configure-project-wide-properties.
Alternatively, you can try to fix the problem by adding this snippet to
C:\temp\android\app\build.gradle:
[ +1 ms] dependencies {
[ +2 ms] implementation("androidx.annotation:annotation:1.0.2")

[ +5 ms] *******************************************************************************************
[ +3 ms] The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
[ +2 ms] See https://goo.gl/CP92wY for more information on the problem and how to fix it.
[ +1 ms] *******************************************************************************************
[ +5 ms] "flutter appbundle" took 40,539ms.
Gradle task bundleRelease failed with exit code 1

#0 throwToolExit (package:flutter_tools/src/base/common.dart:28:3)
#1 _buildGradleProjectV2 (package:flutter_tools/src/android/gradle.dart:751:5)
#2 _asyncThenWrapperHelper. (dart:async-patch/async_patch.dart:71:64)
#3 _rootRunUnary (dart:async/zone.dart:1132:38)
#4 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#5 _FutureListener.handleValue (dart:async/future_impl.dart:137:18)
#6 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:678:45)
#7 Future._propagateToListeners (dart:async/future_impl.dart:707:32)
#8 Future._completeWithValue (dart:async/future_impl.dart:522:5)
#9 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:30:15)
#10 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:288:13)
#11 runCommandAndStreamOutput (package:flutter_tools/src/base/process.dart)
#12 _asyncThenWrapperHelper. (dart:async-patch/async_patch.dart:71:64)
#13 _rootRunUnary (dart:async/zone.dart:1132:38)
#14 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#15 _FutureListener.handleValue (dart:async/future_impl.dart:137:18)
#16 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:678:45)
#17 Future._propagateToListeners (dart:async/future_impl.dart:707:32)
#18 Future._completeWithValue (dart:async/future_impl.dart:522:5)
#19 Future._asyncComplete. (dart:async/future_impl.dart:552:7)
#20 _rootRun (dart:async/zone.dart:1124:13)
#21 _CustomZone.run (dart:async/zone.dart:1021:19)
#22 _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#23 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:963:23)
#24 _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#25 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#26 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:116:13)
#27 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:173:5)

위 문제를 해결하기 위해서 프로젝트 폴더의 android/build.gradle 파일을 열고 

아래 추가 부분에 해당하는 코드를 추가해주고 다시 빌드해본다.

buildscript {
  ext.kotlin_version = '1.3.0'
  repositories {
    google()
    jcenter()
  }

  dependencies {
    classpath 'com.android.tools.build:gradle:3.3.2'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
  }

  //--------------추가 부분-----------
  subprojects {
    project.configurations.all {
      resolutionStrategy.eachDependency { details ->
        if (details.requested.group == 'com.android.support'
            && !details.requested.name.contains('multidex') ) {
          details.useVersion "27.1.1"
        }

        if (details.requested.group == 'androidx.core'
            && !details.requested.name.contains('androidx') ) {
          details.useVersion "1.0.1"
        }
      }
    }
  }
  //----------------여기까지------------
}