Kai questions

• A question on CSS selector syntax
• Object serialization and deserialization when class field changed
• When Service is killed, can the process be still alive?
• In which thread FutureCallback will be called for a ListenableFuture in Guava?
• How to find out the size of a directory in adb shell?
• return statement in a function as class
• There is normally no need to subclass application?
• How to reduce the memory usage of background images?
• Multiple activity instances and FLAG_ACTIVITY_REORDER_TO_FRONT
• What's the default timeout of using HttpGet and DefaultHttpClient?

Kai answers