flutter upgrade之后出现Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from

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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