How to determine the currently running activity name in Android

The example in this article describes how Android obtains the currently running activity name, which prevents instant chat from being notified. Share to everyone for your reference. Here's how:

You need to know what activity is currently active when you are chatting. Two ways are sorted out:

First: Make it easy (not available in service)

private String Getrunningactivityname () {          string contextstring = Context.tostring ();          Return contextstring.substring (Contextstring.lastindexof (".") + 1, Contextstring.indexof ("@"));  }

the second kind: to be a little bit troublesome, need a permission (recommended)

<uses-permission android:name= "Android.permission.GET_TASKS"/>    private String getrunningactivityname () {                  Activitymanager activitymanager= (Activitymanager) Getsystemservice (context.activity_service);          String runningactivity=activitymanager.getrunningtasks (1). Get (0). Topactivity.getclassname ();          return runningactivity;                 

How to determine the currently running activity name in Android