I have 2 classes, FirstActivity and SecondActivity.
First Activity
Intent intent=new Intent(getApplicationContext(),SecondActivity.class);
startActivity(intent);
Is it possible for SecondActivity to overlay on FirstActivity? ie. FirstActivity gets dimmed, SecondActivity gets displayed on top of FirstActivity.
If it is not possible for 2 different activities, is it possible to do an overlay for 2 views in the same activity? I hope using dialog is not the only option.
I suggest you set your second activity up as a dialog -- which will dim the background. Here is a tutorial that could be helpful:
http://developer.android.com/guide/topics/ui/dialogs.html
http://www.helloandroid.com/tutorials/how-display-custom-dialog-your-android-application
Or you can simply set the theme in the manifest as a dialog for your SecondActivity.