I want to create a simple android app to promote my apps

I would like to create a simple code as shown in the image below without a .xml layout and write the code in one .java file to make it easy for me to add it to my project.
The image link and the link that users will go to are fetched from a file in a .json file
When you click on the image, the link will open

The final budget is $100

For example file JSON
"test":{
"banner_ads":[
{
"game1":{
"image_url":"",
"website_url":""
},
"game2":{
"image_url":"",
"website_url":""
}
}
],
"full_ads":[
{
"game1":{
"image_url":"",
"website_url":""
},
"game2":{
"image_url":"",
"website_url":""
},
}
]
}