AndroidStuido中多渠道打包时，当module作为li

1. module lib的build.gradle

apply plugin: 'com.android.library'
android {
    compileSdkVersion 28
    defaultConfig {
        ...
        //只有在这里声明维度，才能识别Variant，同时声明两个，则同时编译两个
        flavorDimensions 'channel'
    }
    publishNonDefault true
    productFlavors {
        vivo {
            dimension 'channel'
        }
        huawei {
            dimension 'channel'
        }
    }
}

2. app的bulid.gradle

apply plugin: 'com.android.application'

android {
    useLibrary 'org.apache.http.legacy'
    compileSdkVersion 28
    defaultConfig {
        ...
        missingDimensionStrategy 'channel','huawei'
    }
}

dependencies {
  ...
    implementation project(':module-lib')
}

选中huaweiDebug是编译成功的，但当选中vivoDebug时则出报错
WARNING: Module 'module-lib' has variant 'vivoDebug' selected, but the module ''app'' depends on variant 'huaweiDebug'

4.解决办法：在app的build.gradle中将missingDimensionStrategy 'channel','huawei'更改为missingDimensionStrategy 'channel','vivo'
因此每次切换build variant时都手动更改missingDimensionStrategy即可

5.这方法虽然有点点麻烦，但代码简洁明了，若有更好的办法，还请告知