問題描述

我有一個基于 gradle 的 Android 項目，其中包含 4 個子模塊 - 兩個庫和兩個應用程序.我試圖通過將一些共享代碼/配置移動到頂級 build.gradle 文件并使用 subprojects {} 使該代碼可供每個子模塊使用，從而簡化每個子模塊的 build.gradle 文件子模塊.

I have an gradle-based Android project with 4 submodules - two libraries and two applications. I was trying to simplify the build.gradle files of each submodule by moving some of of the shared code/configurations to the top level build.gradle file and use subprojects {} to make that code available to each submodule.

文件系統結構如下:

Root
 |- App1/
 |- App2/
 |- Lib1/
 |- Lib2/
 |- build.gradle
 |- settings.gradle

問題是，如果我將 android {} 部分添加到子項目中，那么 gradle 任務就會失敗.例如，這是我的頂級 build.gradle 文件:

The problem is that if I add an android {} section to the subprojects then gradle tasks fail. For example, this is my top-level build.gradle file:

subprojects { project ->
  android {
    buildToolsVersion "20.0.0"
  }
}

運行 gradle 會返回:

Running gradle returns this:

出了什么問題:評估根項目android"時出現問題.在根項目android"上找不到參數 [build_7dngpra6ldok366maq0on77r7e$_run_closure3_closure5@43d95624] 的方法 android().

What went wrong: A problem occurred evaluating root project 'android'. Could not find method android() for arguments [build_7dngpra6ldok366maq0on77r7e$_run_closure3_closure5@43d95624] on root project 'android'.

我搜索了類似的帖子，有些人建議將 apply plugin: 'android' 行添加到每個子項目中，以公開 gradle 缺少的 android() 方法正在抱怨.但是，該解決方案對我不起作用，因為它會有效地將該行添加到庫項目中，這需要 apply plugin: 'android-library' 代替.

I searched for similar posts and some people suggest adding the line apply plugin: 'android' to each subproject in order to expose the missing android() method that gradle is complaining about. However, that solution doesn't work for me because it would effectively add that line to library project, which require apply plugin: 'android-library' instead.

當您在同一個項目中有應用程序和庫時，有沒有辦法在 subprojects {} 中使用 android {}?

Is there a way to use android {} inside of subprojects {} when you have apps and libraries in the same project?

推薦答案

這實際上是對 android-gradle 插件結構方式的限制，android 工具網站.

This is actually a limitation on the way that the android-gradle plugin is structured and there is a workaround documented at the android tools website.

如果您有很多 Android 模塊，您可能希望避免在所有模塊中手動設置相同的值.因為您可能混合了 android 和 android-library 項目，所以您不能通過子項目閉包應用這些插件.

If you have a lot of Android modules, you may want to avoid manually setting the same values in all of them. Because you probably have a mix of android and android-library project you can't apply these plugins through a subprojects closure.

建議的解決方案是:

...在根項目的 build.gradle 中:

...in the root project's build.gradle:

ext {
  compileSdkVersion = 19
  buildToolsVersion = "19.0.1"
}

在所有安卓模塊中:

android {
  compileSdkVersion rootProject.ext.compileSdkVersion
  buildToolsVersion rootProject.ext.buildToolsVersion
}

...

我注意到的一個想法是，這不適用于舊版本的 gradle(我嘗試使用 1.10 并遇到錯誤).不過，對于 Gradle 2.1，這似乎可以正常工作.

One think I noticed was that this doesn't work on older versions of gradle (I was trying with 1.10 and got an error). With Gradle 2.1 this seems to work correctly though.

這篇關于從 gradle 構建 Android 項目時找不到參數的方法 android()的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！