NullPointerException error when polling down the preset url list spinner

There was a bug in RTSPPlayer, that is when you poll down the preset RTSP stream source  list spinner, the APP will crash with an NullPointerException. Today, I finally have it fixed. Error message detail: [code] 04-29 14:47:07.610: W/dalvikvm(8068): threadid=1: thread exiting with uncaught exception (group=0x4001d560) 04-29 14:47:07.690: E/AndroidRuntime(8068): FATAL EXCEPTION: main 04-29 14:47:07.690: E/AndroidRuntime(8068): […]