Not able to run my app using Appium Version 1.7.1

m not able to run my native app using this appium version because im not getting how to launch app using this can u please help me out in this that how can i give apk path and sdk . At present when i start server . it runs Appium settings on my device but app does not run.Im missing something major please help me

Could you please specify the OS version of your device ?

me using android 4.4 .Im now able to run appium. i changed the remote host address and it works for me.