Best Answer: How Does Android Application Open and Close Background and Foreground Events?

How do you detect when an Android app goes to the background and come back to the foreground?

Using the following code you can detect if the App comes foreground. This is how to detect if the App goes background.
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The callback sequqnce will be,

1. onPause()
2. onStop() (–activityReferences == 0) (App enters Background??)
3. onDestroy()
4. onCreate()
5. onStart() (++activityReferences == 1) (App enters Foreground??)
6. onResume()

What is foreground and background in Android?

Foreground refers to the active apps which consume data and are currently running on the mobile. Background refers to the data used when the app is doing some activity in the background, which is not active right now.