To design our application, we have to keep in mind what the project is about and how the backend was designed. As we know, this is a mini-social-network-type app. So we have to create some model objects that are exactly the same as the server's model objects. In the application's workflow, we will have some layouts that will represent our applications.

The workflow is shown in the following diagram:

Here are the brief of the workflow according to this diagram:

• Login page: If you have a registered account, you can input the username and password to enter the application's main page. Or, if you are new, you need to go to the registration page and register an account.
• Registration page: This is for registering an account.
• Home activity: This is the main part of your application. 

• Profile: You can see your details here.
• Status details: You can see the details of any post that you click on.

So far, this project is based on these layouts. Now we need to create an Android application.