How do I read properties defined in local.properties in build.gradle

Question

I have set `sdk.dir` and `ndk.dir` in local.properties. How do I read the values of `sdk.dir` and `ndk.dir` in the build.gradle file?

Accepted Answer

You can do that in this way:

```
Properties properties = new Properties()
properties.load(project.rootProject.file('local.properties').newDataInputStream())
def sdkDir = properties.getProperty('sdk.dir')
def ndkDir = properties.getProperty('ndk.dir')
```

Use `project.rootProject` if you are reading the properties file in a sub-project `build.gradle`:

```
.
├── app
│   ├── build.gradle <-- You are reading the local.properties in this gradle build file
│   └── src
├── build.gradle
├── gradle
├── gradlew
├── gradlew.bat
├── settings.gradle
└── local.properties
```

In case the properties file is in the same sub-project directory you can use just `project`.

How do I read properties defined in local.properties in build.gradle

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