Kai questions

• 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?
• Will it save a lot of memory by using 9-patch images?
• Will cursor be still alive after database is closed?
• how to figure out which inner anonymous class indicated by a class name?
• UUID.randomUUID().getLeastSignificantBits() always returns negative values?
• How to combine a list of exceptions?
• Handler.removeCallbacksAndMessages(null) and main looper

Kai answers