Gradle task to piggyback off install task allowing CLI opening of the app.

monkey.gradle

android.applicationVariants.all { variant ->
    task "open${variant.name.capitalize()}" {
        dependsOn "install${variant.name.capitalize()}"

        doLast {
            exec {
                commandLine "adb shell monkey -p ${variant.applicationId} -c android.intent.category.LAUNCHER 1".split(" ")
            }
        }
    }
}