Clear collection after we used

Change-Id: Idbec734a2227cb333ed1cc47d64647a9da460e76
Signed-off-by: Roger Chen <cxr514033970@gmail.com>
Correct attachment type for Mms only has subject

Mark the attachment type of Mms only has subject as TEXT
avoid to show Mms View as untimely

Change-Id: Ia018cac0910db7fc3be139ebdd65520d86742ba5
Signed-off-by: Roger Chen <cxr514033970@gmail.com>