Topics

• AsyncTask
• Singleton Implementation
• Memory Leaks
• MediaSession
• Code Contracts

Examples

• Lazy, thread-safe Singleton (using Lazy<T>)
• Anonymous callback in activities
• Pass Activity as WeakReference to avoid memory leaks
• Receiving and handling button events
• Standard precondition
• Precondition that throws a specific Exception
• Pre and postconditions
• Disposing of the Singleton instance when it is no longer needed