Apps active app flag

[application_developer]

hi. i am new in android development.
i am using Android studio for development of apps.
can anyone tell me is there any way so i can know my APP IS IN USE or Not?

 

[wseng92]

Can you elaborate more? You want to know how many user using your app?

 

[application_developer]

no. i mean that..... can i know user is using my app or using some other app or has locked the phone in android studio