Flavor 'xxxx' has unknown dimension 'app'.和Unable to load class 'org.gradle.api.internal.compo

╰半夏微凉° 2022-05-13 22:42 236阅读 0赞

## Flavor ‘xxxx’ has unknown dimension ‘app’. ##

android studio 3.0,更新

classpath ‘com.android.tools.build:gradle:3.0.0’以后，出现报错

Error:All flavors must now belong to a named flavor dimension.  
The flavor ‘flavor\_name’ is not assigned to a flavor dimension.

报错的原因：查看给出的链接地址：[https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration.html\#apply\_plugin][https_developer.android.com_studio_build_gradle-plugin-3-0-0-migration.html_apply_plugin]

The plugin now requires that all flavors belong to a named flavor dimension—even if you intend to use only a single dimension. Otherwise, you will get the following build error:  
意思大致说，这个3.0的插件要求flavor dimension必须要有，哪怕只有一个维度也要声明， flavorDimensions 是在android\{\}中的字段：可以理解成维度，比如下面只声明了一个渠道的维度，

flavorDimensions “channel”  
//渠道  
productFlavors \{

qh360 {
            manifestPlaceholders = [UMENG_CHANNEL_VALUE: "qh360"]
            dimension "channel"
        }
        baidu {
            manifestPlaceholders = [UMENG_CHANNEL_VALUE: "baidu"]
            dimension "channel"
        }
    
    }

关于flavorDimensions 可以生成多维度，比如下面的代码

// 两个维度  
flavorDimensions “isFree”, “channel”

productFlavors \{  
free \{  
// 免费和付费用isFree做标识，小米和htc为发布到的平台用channel做标识，因而最后生成4  
//种flavor，加上buildtype就是4\*2=8种  
dimension “isFree”  
…  
\}

paid {
      dimension "isFree"
      ...
    }
    
    xiaomi{
        dimension "channel"
        ...
    }
    
    htc{
        dimension "channel"
        ...
    }

其实就是在3.0插件以后，google要求必须添加这个flavorDimensions 这个字段哪怕是只有一个维度也要写上才不报错,  
然后看到stackoverflow上的回答更简单的使用如下:

android \{

defaultConfig {
    
        flavorDimensions 'default'
    }

或是:

android \{

defaultConfig {
    
        flavorDimensions 'versionCode'
    }

## 针对Unable to load class ‘org.gradle.api.internal.compo ##

classpath ‘com.novoda:bintray-release:0.4.0’改成最新(当前是0.8)，  
然后还有就是依赖其他项目版本的问题，统一管理。  
//统一管理  
ext \{  
var = \[  
minSdkVersion : 19,  
targetSdkVersion : 27,

compileSdkVersion   : 27,
            buildToolsVersion   : "27.0.2",
    
            versionName         : "2.9.2",
            versionCode         : 292,
    
            supportVersion      : "27.1.1",
    
            okhttploggingVersion: '3.8.1',
            okhttpVersion       : '3.8.1',
            retrofitVersion     : '2.4.0',
    
            rxjavaVersion       : '2.1.12',
            rxandroidVersion    : '2.0.2',
    
    ]

\}  
这种多渠道，以及依赖项目。Android studio建议用正式版，别急着尝鲜我的版本是3.14.  
希望对你有所帮助，纸上得来终觉浅，书到用时方恨少。

[https_developer.android.com_studio_build_gradle-plugin-3-0-0-migration.html_apply_plugin]: https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration.html#apply_plugin