Build, install and run release build

README.md

Grab code then

apply from: 'lazy.gradle'

lazy.gradle

apply plugin: 'com.android.application'

android.applicationVariants.all { variant ->
    def name = variant.name.capitalize()
    def outputFile = variant.outputs.get(0).outputFile
    def applicationId = variant.applicationId

    task("clear$name") {
        doLast{
            def proc = "adb shell pm clear $applicationId".execute()
            proc.waitFor()
        }
    }

    task("remove$name") {
        doLast{
            def proc = "adb shell am start -a android.intent.action.DELETE -d package:$applicationId".execute()
            proc.waitFor()
        }
    }

    task("free$name") {
        doLast {
            def proc = "adb install -r ${outputFile.canonicalPath}".execute()
            def sout = new StringBuilder(), serr = new StringBuilder()
            proc.consumeProcessOutput(sout, serr)
            proc.waitFor()
            if (sout.toString().indexOf("INSTALL_FAILED_UPDATE_INCOMPATIBLE") >= 0) {
                println("> Error: INSTALL_FAILED_UPDATE_INCOMPATIBLE")
                println("> Remove old")
                tasks.getByPath("remove$name").execute()
            }

            proc = "adb shell monkey -p $applicationId -c android.intent.category.LAUNCHER 1".execute()
            proc.waitFor()
        }
    }
    task("lazy$name") {
        dependsOn "assemble$name"
        dependsOn "free$name"
    }

    task("freshLazy$name"){
        dependsOn "clear$name"
        dependsOn "assemble$name"
        dependsOn "free$name"
    }
}