In which situations is it advisable to apply the Singleton pattern?

The Singleton pattern is used when it is necessary to guarantee that only one instance of a class exists in the application and to provide a global access point to this instance. In Android, this is useful, for example, for managing resources that should be unique, such as:

• Database manager (e.g., SQLiteOpenHelper)
• Data cache
• Application settings
• Logging

It is important to remember that Singleton should be implemented with thread safety in mind, especially in multi-threaded Android environments. Also, excessive use of Singleton should be avoided to prevent creating tight dependencies and complicating testing.