CEC 417 Mobile Application Development Exam 2026

About this paper

CEC 417: Examination for CEC417, Development of Mobile App (4 credits), College of Technology, University of Buea, instructor Megoze Hilaire (31 January 2026). The paper presents a Kotlin/Jetpack Compose Android case study: a temperature converter app with a MainActivity, composable functions (ImageHeader showing an image, EnterTemperature for a text field, ConvertButton for a button, TemperatureText showing the converted result) and state management via remember/mutableStateOf. Students must complete the missing lines (the package declaration, the android.os import, and the preview annotation line), describe the problem the code solves (converting a Celsius input into Fahrenheit through a simple UI), list all the composable functions present, define the concept of a Modifier in Jetpack Compose, and identify the functions related to Modifier used in the code (e.g. padding, fillMaxWidth, height).