How to make your app accessible to users with vision impairment or other physical disabilities.
Your customer base probably includes many people with disabilities, whether you are aware of it or not. According to government figures, one person in five has some functional limitation, and eight percent of all users on the Web have disabilities. In the United States alone there are more than 30 million people with disabilities who can be affected by the design of computer software, and worldwide the number is much higher. Many countries/regions, including the United States, have laws that mandate accessibility at some level.
When it comes to reaching as wide a user base as possible, it's important to pay attention to accessibility in your Android application. Cues in your user interface that may work for a majority of users, such as a visible change in state when a button is pressed, can be less optimal if the user is visually impaired.
This post shows you how to make the most of the accessibility features built into the Android framework. It covers how to optimize your app for accessibility, leveraging platform features like focus navigation and content descriptions. It also covers how to build accessibility services, that can facilitate user interaction with any Android application, not just your own.
Techniques should be applied to solve them:
1. Developing Accessible Applications
Learn to make your Android application accessible. Allow for easy navigation with a keyboard or directional pad, set labels and fire events that can be interpreted by an accessibility service to facilitate a smooth user experience.
2. Developing Accessibility Services
Develop an accessibility service that listens for accessibility events, mines those events for information like event type and content descriptions, and uses that information to communicate with the user. The example will use a text-to-speech engine to speak to the user.
3. Accessibility Checklist
Learn how to test your app for accessibility.
Your customer base probably includes many people with disabilities, whether you are aware of it or not. According to government figures, one person in five has some functional limitation, and eight percent of all users on the Web have disabilities. In the United States alone there are more than 30 million people with disabilities who can be affected by the design of computer software, and worldwide the number is much higher. Many countries/regions, including the United States, have laws that mandate accessibility at some level.
When it comes to reaching as wide a user base as possible, it's important to pay attention to accessibility in your Android application. Cues in your user interface that may work for a majority of users, such as a visible change in state when a button is pressed, can be less optimal if the user is visually impaired.
This post shows you how to make the most of the accessibility features built into the Android framework. It covers how to optimize your app for accessibility, leveraging platform features like focus navigation and content descriptions. It also covers how to build accessibility services, that can facilitate user interaction with any Android application, not just your own.
Techniques should be applied to solve them:
1. Developing Accessible Applications
Learn to make your Android application accessible. Allow for easy navigation with a keyboard or directional pad, set labels and fire events that can be interpreted by an accessibility service to facilitate a smooth user experience.
2. Developing Accessibility Services
Develop an accessibility service that listens for accessibility events, mines those events for information like event type and content descriptions, and uses that information to communicate with the user. The example will use a text-to-speech engine to speak to the user.
3. Accessibility Checklist
Learn how to test your app for accessibility.
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