Why are we forced to call super.method()?
The classes that make up the Android SDK can be incredibly complex. For instance, both activities and fragments must perform a number of operations in order to function properly (i.e. managing life cycle, optimizing memory usage, drawing the layout to the screen, etc.). Requiring the client to make a call to the base class (often at the beginning of the method) ensures that these operations are still performed, while still providing a reasonable level of abstraction for the developer.
How do we know that a
functionmethod requires super to be called?
The documentation should tell you whether or not this is required. If it doesn’t I’d Google-search for some sample code (or check the API demos… or better yet, look at the source code!). It shouldn’t be too difficult to figure out.