在android中以编程方式删除特定号码的whatsapp消息

I am creating an app where user can delete all history of a particular number or group of numbers. I am able to delete calls and sms was just thinking if there a way to delete message/chats related to a particular number from whatsapp pragmatically in android. As whatsapp is also a popular source now. Any views/directions would be helpful. Thanks in advance. I am creating an app where user can delete all