Code a Settings Activity for my camera application

I have coded a camera application that works on my phone with hard-coded values for image size, focus mode, etc. I want to have a Settings activity application created that can be used to save/update camera related settings. On changing settings, they should be persisted using Shared Preferences. A full guide is present here: [login to view URL] This is how it should work: 1. Person opens Camera Settings app. 2. App gets handle to the camera and fetches all properties and supported values like image sizes, focus modes, etc using the Android Camera API. 3. App uses these values to populate the Settings activity. For example the drop down for selecting Image Size gets populated with the supported image sizes. 4. When user changes any value, the setting gets persisted using Shared Preferences. 5. When the app is opened, the persisted values should be fetched and used to select/populate the Settings Activity. Attached is the Settings Activity Example. Things that should be configurable through this settings activity: 1. Image Size. 2. Focus Mode.