CODEWITHSUNDEEP
android
Adam Harte
Adam Harte

Reputation: 10510

Should I use a callback or some kind of event in Android?

I am just starting to learn Android Development. I have a method that loads an external XML file, and parses the data. How do I tell the caller that the data is parsed and ready? Should I and a callback argument to the method? Or should the caller register to listen to some kind of event, that I can fire when the data is ready?

A code example or links would be great.

Upvotes: 1

Views: 244

Answers (3)

amiekuser
amiekuser

Reputation: 1630

You can always start your activity when the previous work... here parsing the data is done. Alternatively use a broadcast and let your application have a broadcast receiver and notify your application.

Upvotes: 0

saxos
saxos

Reputation: 2477

If the task is not very complex, you could also use the usual threading approach.

Upvotes: 2

Axarydax
Axarydax

Reputation: 16603

You can use ASyncTask class for this kind of problem. It has several methods that you can override that will suit you for most of the tasks you need - for example it has pre-execution method and progress update method.

Here is a tutorial for using ASyncTask in an app.

Upvotes: 4

Related Questions