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Making Data Matrix in Objective-C Figure 14 9. VoiceOver HUD window

Figure 14 9. VoiceOver HUD window
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Once you have finished, turn off VoiceOver and then run Accessibility Verifier against the DailyJournal application again. This time you should see a more healthy report (see Figure 14 10). The figure shows the section of the report dealing with the controls where you have added Help and Description tags. Notice that the report has picked up these tags rather than the content of the control (see, for example, the AXDateTimeArea and compare this with Figure 14 5).
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CHAPTER 14: Usability and Accessibility
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Figure 14 10. An improved report from Accessibility Verifier
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So you can enhance the basic behavior of your controls for VoiceOver simply by adding these two tags to the Identity information for the control. It's a good accessibility practice to add Description and Help tags to all of the controls that your user is going to interact with, but particularly where controls could be confused. A similar situation exists for image buttons. If there is not even a title on the button, VoiceOver has nothing much to go on in helping the user. Adding those Description and Help tags will make all the difference between an accessible application and a frustrating one. Having said all that, your user may find it annoying to have VoiceOver droning on interminably on every control, so keep the messages crisp and to the point.
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Summary
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There is a lot of competition in the software market. If you are writing software for the Mac or iPhone, you are targeting a very sophisticated audience and one that is frequently looking for high quality before low cost. Pile it high and sell it cheap won t work here you will know from your own user experience that an application that delights you as well as doing the job you bought it for will be a more satisfying piece of software to use. You can make your product stand out from the crowd by taking care of the human factors in your system design. Mac OS X provides probably the best support of any consumer computer operating system for users with sensory impairments. As a developer you can capitalize on and build on this support through a few simple steps to make your application work better for these users. The effort is minor, and the benefit is major: what s not to like In the final chapter you will be addressing an issue all developers face at some point: your product release. As always, Apple has provided some great support for helping you to create slick, efficient installation kits. You ll also be looking at options for delivering your iPhone applications.
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There comes a point where you have done all of the testing you can do. All of the bugs you know about are squashed, the icon has been polished to perfection, the help files written. It s time to share your product with an eager and soon-to-be grateful public. In this final chapter, you ll be covering that last step. You will take the working application running in Xcode and turn it into the package you need to deliver to your end users. We re going to deal with simple and more advanced tools for doing this. We ll also be looking at iPhone distribution and what you need to get started on the road to getting your iPhone application to market.
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Build Configurations From Debug to Release
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The first thing to be aware of is the Active Build Configuration. We haven t really come back to this since the early days back in 2, where you learned about the Xcode Workspace. All through the book your project has been in a Debug Build Configuration, as you can see if you take a look at the Overview popup in the Xcode Workspace toolbar (see Figure 15 1). The Debug configuration causes your application to be compiled along with the debug symbols. The Release configuration removes the debug symbols and also carries out some optimization of the code during compilation. In the unlikely circumstance that you want to create a custom build configuration, you can do this via the Project Info window. The fact is that the most likely thing you will do as a developer, at least to begin with, is to change your project from the Debug to the Release Build Configuration. The most visible consequence of this is that when you build the application, your application file (strictly speaking it s not a file, but a package folder, but you knew that, didn t you ) will appear in a different location. Go into Finder, open up the project file for a project such as Text Pal, and look in the build folder. If you have used only the Debug configuration then you will see two folders, called Text Pal.build and Debug. The first is used just for
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