android发邮件

启动一个Intent发邮件，指定receiver email， subject， body：

/**
     * Start an activity to send an email to the given receiver, with the given subject and text body.
     * @param receiver The receiver's email address
     * @param subject Email subject.
     * @param text Email body.
     */
    private void sendEmail(String receiver, String subject, String text) {
        Intent i = new Intent(Intent.ACTION_SEND);
        i.setType("message/rfc822"); // use from live device
        i.putExtra(Intent.EXTRA_EMAIL, new String[] {receiver});
        i.putExtra(Intent.EXTRA_SUBJECT, subject);
        i.putExtra(Intent.EXTRA_TEXT, text);
        
        startActivity(Intent.createChooser(i, getString(R.string.dialog_title_Choose_email_app)));
    }