How can email add all types attachment？

1)Bydefault,Emailcanaddimagesasattachmentonly.
2)Solution
File:MessageCompose.java
FunctionnAddAttachment
privatevoidonAddAttachment(){
Intenti=newIntent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
//i.setType(Email.ACCEPTABLE_ATTACHMENT_SEND_UI_TYPES[0]);//Commentthisline
i.setType(Email.ACCEPTABLE_ATTACHMENT_VIEW_TYPES[0]);//Addthisline
startActivityForResult(
Intent.createChooser(i,getString(R.string.choose_attachment_dialog_title)),
ACTIVITY_REQUEST_PICK_ATTACHMENT);
}