Find Foreground Activity

Finding the Foreground Activity
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if you want to which activity is running in the foreground
write this code

ActivityManager am = (ActivityManager)getSystemService(ACTIVITY_SERVICE);
 List< ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(1);               
           
taskInfo.get(0).topActivity.getClassName();   

and add below permission in your manifest file

  <uses-permission android:name="android.permission.GET_TASKS" />