Android Programming: The Big Nerd Ranch Guide (2nd   24. Loopers, Handlers, and HandlerThread

About the 24. Loopers, Handlers, and HandlerThread category (1)
I got the error,but i don't know the reason.can someone tell me where is my error code? (1)
"This Handler class should be static or leaks might occur" error (1)
Why do we need the responseHandler to communicate back to the main thread? Can we just call the DownloadListener from the background thread? (4)
Preloading Challenge - Question and Solution (8)
There are some bugs! (5)
Challenge Using LruCache (1)
Press Back button, PhotoGallery crash (3)
Messages in the message pool question (3)
This chapter is very confusing (1)
Page 436: Possible typo (3)
Using of ConcurrentHashMap to store URL (5)
Is there a race condition in code? (5)
getResources().getDrawable() is deprecated (3)
ERRATA, check please (1)
getLayoutInflater, vs. LayoutInflater.from? (2)
Scope of variables - a bit confused, here (1)
ERRATA(?), check please (2)
When we clearqueue at fragment ondestroy (3)
Using Lrucache (4)
className<Token> (2)