How to ask user to unlock device on clicking notification action in android?

Question

      I am displaying a notification from my application and this notification has an action in it, when user clicks on the action, the c

Answer 1

In the Activity you are opening (that is behind the lock screen) you should tell system to lift the keyguard (e.g. in onCreate())

For API >= 26

KeyguardManager km = (KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
km.requestDismissKeyguard(this, null); // you may add callback listener here

For API < 26:

getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);

If device is not locked securely it would unlock it immediately, and if it is locked, it will ask user to do it.