【gradle】コンパイル完了直接インストールと開いた指定ページのtask

/**
 *      apk   
 */
void installAndOpen() {
    println "InstallAndOpen"
    def isWindows = System.properties['os.name'].contains('windows') || System.properties['os.name'].contains('Windows')
    println("System is " + System.properties['os.name'] + "  is Windows =" + isWindows)
    def defaultApkPath = ""
    if (isWindows) {//Windows  
        defaultApkPath = rootDir.getAbsolutePath() + "\xx\xx\xx\xx\windows apk   "
    } else {//Linux  
        defaultApkPath = rootDir.getAbsolutePath() + "/xxp/xx/xx/xx/Linux apk   "
    }
    println defaultApkPath
    def apkFiles = new File(defaultApkPath)
    println apkFiles.getClass()
    //           
    Long lastModifiedTime = Long.MIN_VALUE
    def apkPath = ""
    if (apkFiles.isDirectory()) {
        apkFiles.listFiles().toList().forEach { file ->
            if (file.isFile() && file.name.endsWith("apk")) {
                if (file.lastModified() > lastModifiedTime) {
                    lastModifiedTime = file.lastModified()
                    apkPath = file.path
                }
            }
        }
    }
    if (apkPath.length() == 0) {
        return
    }
    //  apk adb install   
    def command = "adb install -r -d ${apkPath}"
    println command
    def result = command.execute()
    def resultText = result.text
    println resultText
    if (resultText.contains("Success")) {
        //  apk       Activity 
        def startCommand = "adb shell am start   /  "
        println startCommand
        def startResult = startCommand.execute()
        println startResult.text
    }
}