Dispatcher is a simple and flexible work scheduler that schedulers work on a background or UI thread correctly in the form of Dispatch using the android.os.Handler class.
Dispatch queue is an ultra-high performance queue extending Android message queue. Similar to the coroutine, it supports synchronous return and asynchronous execution. It can wrap the main thread and schedule flexibly
This is repository of http://androidcode.pl blog Background processing / threading section. It shows usage of chosen Android API classes in purpose to achieve background task processing.
An android application that provides group communication and one to one communication with end to end encryption and decryption on both users ends hence provides secure commincation.