Sample Quiz Quiz

Explore core concepts of building Android mobile apps with React Native in this beginner-friendly quiz. Solidify your understanding of components, navigation, styles, debugging, and platform integration.

1. React Native Components

   Which built-in component would you use in React Native to display a block of text on an Android app screen?

   1. Div
   2. Text
   3. Span
   4. Block

   Explanation: The 'Text' component is used to display text in React Native apps and is supported across platforms, including Android. 'Div', 'Span', and 'Block' are HTML elements and are not recognized components in React Native, so they would not render properly in a React Native Android project.

2. Navigation in React Native

   Which approach is commonly used to navigate between different screens in a React Native Android app?

   1. Stack navigation
   2. Window.open
   3. Hyperlink tags
   4. Router module

   Explanation: Stack navigation is widely used in React Native for moving between screens, especially in Android apps. 'Hyperlink tags' and 'Window.open' are web-specific methods not suitable for mobile navigation, while 'Router module' is not a standard solution in React Native for screen transitions.

3. Styling Elements

   How are styles typically applied to components in React Native for Android apps?

   1. Using StyleSheet.create
   2. Writing inline CSS
   3. Using class selectors
   4. Adding external CSS files

   Explanation: 'StyleSheet.create' is the standard way to define and apply styles in React Native. Inline CSS, class selectors, and external CSS files are techniques used in web development but are not directly supported in React Native applications.

4. Debugging React Native Apps

   Which method enables developers to debug a React Native app running on an Android device?

   1. Direct editing manifest
   2. Remote JS Debugging
   3. Terminal only
   4. View Page Source

   Explanation: Remote JS Debugging allows inspection and debugging of React Native apps on Android by connecting to a browser-based debugger. 'View Page Source' is for web pages, 'Direct editing manifest' does not debug code, and 'Terminal only' limits observation to logs without step debugging.

5. Platform-Specific Code

   Which file naming convention allows React Native to load Android-specific code automatically?

   1. Component.android.js
   2. Component_OS.js
   3. ComponentPlatform.js
   4. Component.droid.jsx

   Explanation: Files named with the '.android.js' suffix are recognized by React Native as Android-specific implementations. '.droid.jsx', '.Component_OS.js', and '.ComponentPlatform.js' are not recognized naming patterns and will not be picked up automatically for platform targeting.