How to define common android properties for all modules using gradle

Question

I create a simple project in AndroidStudio with a few modules. Each module's gradle script contains the following code:

android {     compileSdkVersion 18     buildToolsVersion "18.1.1"      defaultConfig {         minSdkVersion 7         targetSdkVersion 18     } } 

How can I move this code to the main build.gradle script (project's script)? This code is common for all the submodules.

Answer 1

You could create a build.gradle at the root of your project (i.e. the folder that contains all your modules), and use it to configure your rootProject.

For instance, if you have:

MyApp   - Module1/       - build.gradle   - Module2/       - build.gradle   - settings.gradle 

You can add a build.gradle next to settings.gradle.

In the example above you actually have 3 Gradle projects: Module1, Module2 and the rootProject.

So inside this build.gradle, you could do:

// use the ext object to add any properties to the project project.ext {    compileSdkVersion = 18 } 

Then in your modules, you can do:

android {     // here we reference the root project with the "rootProject" object.     compileSdkVersion rootProject.ext.compileSdkVersion }