Android 當Module多又要設定多Flavor該怎麼辦?

每次在 Android 項目裡加新的 flavor，都得在每個模組的 build.gradle 文件裡配置一遍，真的很麻煩。這樣一來，工作量大增，還容易出錯。譬如我的submodule可能就有20個，這樣當我想要增加一個flavor或者在裡面增加一個 BuildConfigField，可能頭就開始暈了，這時候該怎麼辦呢?

增加SharedFlavors

這時候你應該希望可以只在一處寫flavor就可以在所有module通用對吧，但又不知道怎麼做，其實你可以在 project層的build.gradle的

buildscript {
    ext {
      // here
    }
}

譬如你的flavor可能這麼複雜

  productFlavors = {
      standardPark {
          dimension FLAVOR_DIMENSION
      }

      seasonalThemePark {
          dimension FLAVOR_DIMENSION
          buildConfigField BOOLEAN, IS_SEASONAL_THEME, TRUE
          buildConfigField BOOLEAN, IS_IGNORE_CAPACITY_LIMITS, FALSE
      }

      miniPark {
          dimension FLAVOR_DIMENSION
          buildConfigField BOOLEAN, IS_MINI_PARK, TRUE
      }

      betaPark {
          dimension FLAVOR_DIMENSION
          buildConfigField BOOLEAN, IS_BETA_FEATURE, TRUE
      }

      nightPark {
          dimension FLAVOR_DIMENSION
          buildConfigField BOOLEAN, IS_NIGHT_MODE, TRUE
      }
  }

於是乎在之前如果你要在每個地方都撰寫，或者之後增加屬性，有20個module就會需要改20次，非常的麻煩，於是乎其實你可以透過在上面所說觸增加一個sharedFlavors的定義

於是就會變成這樣

buildscript {
    ext {
        FLAVOR_DIMENSION = "parkExperience"

        BOOLEAN = "boolean"
        TRUE = "true"
        FALSE = "false"

        IS_SEASONAL_THEME = "IS_SEASONAL_THEME"
        IS_MINI_PARK = "IS_MINI_PARK"
        IS_VIRTUAL_QUEUE = "IS_VIRTUAL_QUEUE"
        IS_NIGHT_MODE = "IS_NIGHT_MODE"

        ENABLE_AR_ATTRACTIONS = "ENABLE_AR_ATTRACTIONS"
        IS_WATER_PARK = "IS_WATER_PARK"
        IS_FAST_PASS_ENABLED = "IS_FAST_PASS_ENABLED"
        IS_FOOD_ORDERING_ENABLED = "IS_FOOD_ORDERING_ENABLED"
        ENABLE_RIDE_PHOTOS = "ENABLE_RIDE_PHOTOS"
        ENABLE_LIVE_SHOW_BOOKING = "ENABLE_LIVE_SHOW_BOOKING"
        IS_BETA_FEATURE = "IS_BETA_FEATURE"
        IS_ENABLE_VR_PREVIEW = "IS_ENABLE_VR_PREVIEW"
        IS_IGNORE_CAPACITY_LIMITS = "IS_IGNORE_CAPACITY_LIMITS"

        sharedFlavors = {
            standardPark {
                dimension FLAVOR_DIMENSION
            }

            seasonalThemePark {
                dimension FLAVOR_DIMENSION
                buildConfigField BOOLEAN, IS_SEASONAL_THEME, TRUE
                buildConfigField BOOLEAN, IS_IGNORE_CAPACITY_LIMITS, FALSE
            }

            miniPark {
                dimension FLAVOR_DIMENSION
                buildConfigField BOOLEAN, IS_MINI_PARK, TRUE
            }

            betaPark {
                dimension FLAVOR_DIMENSION
                buildConfigField BOOLEAN, IS_BETA_FEATURE, TRUE
            }

            nightPark {
                dimension FLAVOR_DIMENSION
                buildConfigField BOOLEAN, IS_NIGHT_MODE, TRUE
            }
        }
    }
}

然後在你各自的moduel中原本productFlavors處就會變成寫這樣就好了

android {
    ...
    productFlavors sharedFlavors
    ....
}

就不需要一有異動，要在20處一起修改。