Get Activity name dynamically - android

Question

I'd like to get the name of the current Activity to be sent along in the URI of an HttpRequest. Is there a way to do this without referring specifically to the Activity?

I know I can do myActivity.class.toString() but this is just a less efficient way of hard coding "myActivity" since I'm making a static reference to my Activity. Is there a more general way to do this using something like 'this' (which btw doesn't actually work here because it returns more information than what's desired).

I don't know that this works, but can't you just use `this.getClass().getSimpleName()` instead? — Kevin Coppock, May 16 '12 at 23:38

Kevin Coppock · Accepted Answer · 2014-07-01T22:27:19.707

209

Use this.getClass().getSimpleName() to get the name of the Activity.

From the comments, if you're in the context of an OnClickListener (or other inner class), specify the class manually:

MainActivity.class.getSimpleName()

edited Jul 01 '14 at 22:27

answered May 16 '12 at 23:40

Kevin Coppock

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That's a good suggestion but not what I'm looking for. It works within onCreate(), but not from within my onClickListener which is where I would like to get the Activity name. If I can't no solution is better than using a constant string. – evanmcdonnal May 17 '12 at 00:04
7

To do this within an onClickListener, you would do "MyActivityName.this.getClass().getSimpleName()" – Oct 04 '12 at 19:48
3

You should note that if you are going to use ProGuard, your class name will get obfuscated and the obfuscated name is what you'll receive on the backend. – zundi Nov 22 '14 at 15:21
Thank you. I was looking it. – shariful islam Jul 19 '18 at 16:02
2

And you can use `MainActivity::class.java.name` in kotlin. – NullByte08 Apr 10 '20 at 12:42

score 23 · Answer 2 · answered Sep 10 '13 at 09:49

For purists out there who may not want to use reflection, an alternative way is to use the PackageManager as follows:

PackageManager packageManager = activity.getPackageManager();
try {
  ActivityInfo info = packageManager.getActivityInfo(activity.getComponentName(), 0);
  Log.e("app", "Activity name:" + info.name);
} catch (NameNotFoundException e) {
  e.printStackTrace();
}

However this seems like a lot of work just to do the same as getClass().getName() (and not even getSimpleName()). But I guess it may be useful for someone who wants more information about the activity than just the class name.

score 7 · Answer 3 · edited Oct 13 '16 at 07:14

7

ActivityManager am = (ActivityManager)context.getSystemService(ACTIVITY_SERVICE);
List< ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(1);
this.currentActivity = taskInfo.get(0).topActivity.getClassName();
Log.i( "CURRENT Activity ",  currentActivity);

edited Oct 13 '16 at 07:14

Al Foиce ѫ

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answered Oct 13 '16 at 06:53

RJ CR

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getRunningTasks is deprecated. – Julia Williams Dec 01 '21 at 04:56
This Code crashed Android 12, Android 13 devices. – Halil Ozel May 02 '23 at 06:53

score 4 · Answer 4 · answered Jun 25 '18 at 12:47

First: open your manifest.xml file

you will find your package name i.e. "com.company.projectname"

Then: lets say your activity name is MainActivity

MainActivity.class.getCanonicalName() >output> "com.company.projectname.MainActivity"

OR

MainActivity.class.getSimpleName() >output> "MainActivity"

OR

MainActivity.class.getName() >output> "com.company.projectname.MainActivity"

score 1 · Answer 5 · answered Mar 20 '19 at 08:07

For Xamarin

string GetActivityClassName(Activity activity) //Receiving LoginActivity
{
    //ComponentName
    activity.ComponentName; //Output: "md5101a0260d0a0e5d40a0a9009be09b0c2.LoginActivity"

    //LocalClassName
    activity.LocalClassName; //Output: "md5101a0260d0a0e5d40a0a9009be09b0c2.LoginActivity"

    //Java.Lang.Class.FromType.SimpleName
    Java.Lang.Class.FromType(activity.GetType()).SimpleName; //Output "LoginActivity"

    //Type.Name
    activity.GetType().Name; //Output "LoginActivity"
}

Get Activity name dynamically - android

5 Answers5

For Xamarin

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