Software Engineering
4. Software Accessibility and Digital Inclusion
Lesson 3 Accessibility Features in an Application
Lesson Accessibility Features in an Application - Software Engineering - ثالث ثانوي
1. Software Engineering
2. Prototyping
3. Developing Applications with App Inventor
4. Software Accessibility and Digital Inclusion
The Suitability of the Application for People with Special Needs
Adjusting the Prototype to Improve the Accessibility of the App
Enhancing the UI with Accessibility Features
Adding a Zoom In Button to the Application
Programming the Zoom In Button
To program the zoom in button:
Figure 4.7: Programming the zoom-in button
Adding a Zoom Out Button to the Application
Programming the Zoom Out Button
Adding a Text-To-Speech Button to the Application
To add a TextToSpeech component: > From the Media group, add a TextToSpeech component
Programming the Text-To-Speech Button
Figure 4.12: Programming the text-to-speech functionality
Adding a Button to Change the Color Theme of the Application
Programming the Color Theme Button
To program the color theme button:
Figure 4.14: Programming the color theme button
The software is ready and you have to test it.
Describe how each accessibility feature added will help people with various disabilities use the application.
Add the zoom in and zoom out buttons on the remaining screens of the application.
Extend the zoom in and zoom out button functionality to enlarge the Button and ListPicker components of each screen.
Add the color theme button on the remaining screens of the application.
Add the text-to-speech button on the remaining screens of the application.
Extend the speaker button functionality to add predefined messages on every screen to introduce each component before speaking the content of each component.
