Android ACTION_SEND意图不填充主题或正文

I have code in my app which lets the user send an email to the developer. It is supposed to prepopulate the To field, the Subject field, and the body field. HOwever, when I run, it populates To but ignores the other EXTRAs like Subject, Body, and Chooser text. I'm seeing this behavior on two test devices: one running Lollipop (Verizon Samsung Galaxy Note 4) and one running Jelly Bean 4.2.2 (Samsung Fascinate on CM10.1, although I don't know if this has bearing on the issue.I have code in my app which lets the user send