Failure on build with Gradle on command line with an android studio project : Xlint error

It’s a nice warning, not an error. To see the complete lint report you can add these lines to build.gradle:

allprojects {
    tasks.withType(JavaCompile) {
        options.compilerArgs << "-Xlint:deprecation"
    }
}

If you really want to get rid of those warnings:

1. Don’t use deprecated API
2. Use @SuppressWarnings(“deprecation”)