Android studio 3.0上进行多渠道打包遇到的问题

flavorDimensions "default"
productFlavors {
kuan {
dimension "default"
manifestPlaceholders = [UMENG_CHANNEL_VALUE: "kuan"]
}
xiaomi {
dimension "default"
manifestPlaceholders = [UMENG_CHANNEL_VALUE: "xiaomi"]
}
qh360 {
dimension "default"
manifestPlaceholders = [UMENG_CHANNEL_VALUE: "qh360"]
}
baidu {
dimension "default"
manifestPlaceholders = [UMENG_CHANNEL_VALUE: "baidu"]
}
wandoujia {
dimension "default"
manifestPlaceholders = [UMENG_CHANNEL_VALUE: "wandoujia"]
}
}

或者：

flavorDimensions "default"
productFlavors {
kuan {dimension "default"}
xiaomi {dimension "default"}
qh360 {dimension "default"}
baidu {dimension "default"}
wandoujia {dimension "default"}
}

productFlavors.all {
flavor -> flavor.manifestPlaceholders = [UMENG_CHANNEL_VALUE: name]
}

You must assign each product flavor you configure to one of the flavor dimensions.

void flavorDimensions(String... dimensions)

flavorDimensions "api", "mode"

productFlavors {
demo {
// Assigns this product flavor to the "mode" flavor dimension.
dimension "mode"
...
}

full {
dimension "mode"
...
}

// Configurations in the "api" product flavors override those in "mode"
// flavors and the defaultConfig {} block. Gradle determines the priority
// between flavor dimensions based on the order in which they appear next
// to the flavorDimensions property above--the first dimension has a higher
// priority than the second, and so on.
minApi24 {
dimension "api"
minSdkVersion '24'
// To ensure the target device receives the version of the app with
// the highest compatible API level, assign version codes in increasing
// value with API level. To learn more about assigning version codes to
// support app updates and uploading to Google Play, read Multiple APK Support
versionCode 30000 + android.defaultConfig.versionCode
versionNameSuffix "-minApi24"
...
}

minApi23 {
dimension "api"
minSdkVersion '23'
versionCode 20000  + android.defaultConfig.versionCode
versionNameSuffix "-minApi23"
...
}

minApi21 {
dimension "api"
minSdkVersion '21'
versionCode 10000  + android.defaultConfig.versionCode
versionNameSuffix "-minApi21"
...
}
}