Interface world (Java + Android), Level 1: Callback method

Interface world Java + Android, Level 1: Callback method !

* Callback method:
- "Don't call me, I'll call you".
- Main thread starts another thread to do something, when the
worker thread finishes, it calls the result back to the main thread.

* Java implement:
Step 1. Create a class as a worker.
Step 2. Create a callback interface.
Step 3. Worker class do something and call result back.
Step 4. Make callback deeper.
- Main thread doesn't know + doesn't care how and what thread is actually
did the work, it just handles the result, that's all.

* Android implement:
Step 1. Create MainActivity + a button to show custom dialog with 3 options.
Step 2. Create a custom dialog.
Step 3. Create a callback interface.
Step 4. Integrate callback and handle result.
Step 5. Make callback deeper.
- Main activity doesn't know + doesn't care how many dialogs is opened
to let user select, it just handle the final result.

Please like, share and subscribe !

[thepowercareers]

Nice one
.. But, it would be great if you would have explained vocally instead of music.

[vishnuv]

I got the answer, which I searched a lot.

[xiaoqin]

This is exactly what I want. Thank you so much!

[arunkumar-icrj]

Good Illustration... NICE explanation as well.

[weptechelektronikgmbh]

In your example main Thread doesn't starting another thread, you are using the same thread all the time.

[МаленкоДмитрий]

Thank You very much for your lesson!!!! It help me too much)

[wahidvi]

Awesome, hey is it possible to provide a custom asynchronous function example using interfaces like retrofit, volley.
Means working of a retrofit library, when i call an URL that not wait for its response and it handle with trigger like function onSuccess and onFailed .

[sharifyy]

Nice explanation but I have a question here! Is it necessary to use an Interface? Can't we make onFound a member of InterfaceWorld and then call the on onFound from ClassA using an instance of InterfaceWorld? Would you please explain that?

[다음만조]

What a good tutorial, but how about lv2 & lv3? I'm looking forward to it !!!

[xkjbsiw]

can i get a android callback code? i typed like your code but problem happened //optionaldialog.show() at this, show can't use in my androidstudio

[shrajan]

bro thank you, but can you make video on level2, I saw in the project library but didnt found it on your channel, I am talking about the observable one

[altinshima]

The music is boring and distracts alot