发送短信

public static void sendSms(Context context, String phoneNumber,String content) {
    Uri uri = Uri.parse( "smsto:" + (TextUtils.isEmpty(phoneNumber) ? "" :phoneNumber));

    Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
    intent.putExtra( "sms_body" , TextUtils.isEmpty(content) ? "" : content);
    context.startActivity(intent); 
}