I need help for my android mobile app development

Exercise A.1
Create the app shown below. Users are initially presented with an "unhappy" character
with the corresponding text "I'm so hungry". After hitting the button "EAT COOKIE",
the character becomes "happy" with corresponding text "I'm so full".
You must use linear layout or relative layout for this apps.
Note: You may use any picture to show the hungry or happy face.
Version 1.2
Exercise A.2
1. Reference to the following video:
https://www.youtube.com/watch?v=BLfqZlUI_MMrequired
Design the following UI using constratint layout (UI only)
Note : You may use the different background or coour for this project.
2. )
Version 1.2
Exercise A.3
Complete each of the following task :
1. Create a new project named “Lab2_studentName” with an empty activity:
Note: Replace studentName to your name
2. Change your apps name (String) to Mathmatic Quiz at apps\res\values\string.xml
as below:
<string name="app_name">Mathematic Quiz</string>
3. Use any layout of your choice such as constraint layout and etc, design an UI
consists of 1 TextView (question), 1 EditText (answer) and 2 buttons (submit,
new question). Arrange your layout appropriately in your app.
4. Execute your application and verify the layout of the activity.
5. Create another empty activity. Use any layout of your choice, design the UI with
two TextViews(message,answer), and 2 buttons (Send, Close). Assign
appropriate id for each UI components. Arrange your layout as the example
below: