Creating your custom event listeners in android

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In this tutorial I will show you how to create your own custom event listeners in android to communicate between classes. To do this, we will be creating an event dispatcher framework in android.

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Thanks... Nice video. Some tips for your videos. #1. Slow down a little. #2. Slow down a little.

FYI:
The .remove logic in the removeEventListener function in EventDispatcher.java will not work properly if the listenerList has more than 1 item of the same type. You can't use .remove in the loop the way you are doing it. If you remove them starting from the end of the array to the beginning of the array you will be ok. You have to do it this way for it to work correctly.

// A Correct Way Of Removing Items
public void removeEventListener(String type)
{
for (int x = listenerList.size() - 1; x >= 0; x--)
{
Listener listener = listenerList.get(x);

if(listener.getType() == type)
{
listenerList.remove(x);
}
}
}

For those people that noticed that the removeAllEventListeners() function was not finished in the video and wanted to see some code. Here ya go...

public void removeAllEventListeners()
{

}

michaelsarver

Thank you sir! very comprehensive and going for a well designed solution! Please do continue to make such videos, it is very helpful!

DineshkumarPuli