如何知道用户正在使用的应用程序名称？

Question

I am a beginner in the field of android development. I am trying to build a keyboard app in the android studio so that the user can use it for typing in applications like Whatsapp, Facebook...etc My query is if the user is using this app for typing some text, is it possible to know in which application he is typing? If it is not possible is there any other way to know about the application which was being used by the user?

Answer 1

It looks like this is possible using the ActivityManager.

import android.app.ActivityManager;

...

final ActivityManager activityManager = (ActivityManager)
final List<ActivityManager.RunningTaskInfo> recentTasks = Objects.requireNonNull(activityManager).getRunningTasks(Integer.MAX_VALUE);

https://www.tutorialspoint.com/how-to-find-the-currently-running-applications-programmatically-in-android