错误信息

Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...
/Users/LinkinStar/flutterProject/xxxxxxxxx/android/app/src/debug/AndroidManifest.xml:22:18-91 Error:
Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to element at AndroidManifest.xml:11:5-34:19 to override.

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:processDebugManifest'.
  > Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
  is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
  Suggestion: add 'tools:replace="android:appComponentFactory"' to element at AndroidManifest.xml:11:5-34:19 to override.

我判断问题是由于AndroidX和Android support 共存导致

在更新一些依赖之后出现

Android dependency 'androidx.core:core' has different version for the compile (1.0.0) and runtime (1.0.1) classpath. You should manually set the same version via DependencyResolution

最终解决

在build.gradle文件中添加

中间subprojects这一段

buildscript {

    repositories {

        google()

        jcenter()

    }

    dependencies {

        classpath 'com.android.tools.build:gradle:3.2.1'

    }

    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"

                }

            }

        }

    }

}

参考：https://github.com/flutter/flutter/issues/27254

作者：LinkinStar
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