![]() What’s the difference between optional and standard callbacks?Īs an Android developer, I use callbacks on a daily basis, starting from the onCreate() method, which creates an activity when an application is launched. A freezing UI can lead to many people uninstalling your app. Optional callbacks are important, because they make sure that users can enjoy your app without interruption by preventing the application from freezing and blocking. Optional callbacks also allow functions that rely on a callback to continue even if the callback returns an error, which supports high level maintenance and reliability. ![]() An optional callback explicitly states what will happen when different results are fetched from another method or function. They help in completing the task of a function by providing results, either negative or positive. Callbacks act as messengers they are the center of communication in a program, and get passed into functions as arguments.
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