android.content.Context vs android.app.Activity

I want to pass a reference of the current activity to a method of a class not extending Activity. I need to use this reference to the active activity so that I can use `getWindow().addFlags(LayoutParams.FLAG_KEEP_SCREEN_ON);` I pass both the current context and activity to the class object using these setter methods in the class: ``` public class VersionCheck { public Context context; public Activity activity; //--------------------------------------------------------------------------------------------------------- //set the current context //--------------------------------------------------------------------------------------------------------- public void setContext(Context context) { this.context = context; } //--------------------------------------------------------------------------------------------------------- //set the current activity //--------------------------------------------------------------------------------------------------------- public void setActivity(Activity activity) { this.activity = activity; } ``` The reference to the activity is used in an AsyncTask in the class (extract below): ``` //--------------------------------------------------------------------------------------------------------- //asynchronous task to check if there is a newer version of the app available //--------------------------------------------------------------------------------------------------------- private class UpdateCheckTask extends AsyncTask<String, Void, String> { HttpClient httpclient; HttpPost httppost; HttpResponse response; InputStream inputStream; byte[] data; StringBuffer buffer; protected void onPreExecute () { VersionCheck vc = new VersionCheck(); //do not lock screen or drop connection to server on login activity.getWindow().addFlags(LayoutParams.FLAG_KEEP_SCREEN_ON); //initiate progress dialogue to block user input during initial data retrieval ProcessingDialog = ProgressDialog.show(context, "Please Wait", "Checking for Updates", true,false); } @Override protected String doInBackground(String... currentVersion) { ``` How do I get a reference to the Activity so that I can pass it to the setActivity(Activity) method? I use myActivity.this as reference for the context. Is it the same for Activity?