If you want to use a Toast notification in an Activity that is the main Activity, you should use the Main.this reference as the correct Context.

Name: If you want to use a Toast notification in an Activity that is the main Activity, you should use the Main.this reference as the correct Context.
Brand: Quizplus
Rating: 4.8 (35 reviews)

Question

Quizplus · Accepted Answer

In an Activity, you can use 'this' as the context for a Toast notification, not necessarily 'Main.this'. 'Main.this' is used when referring to the outer class from an inner class.

If You Want to Use a Toast Notification in an Activity