Sometimes when working with UI objects the connection between the object and your code will be wrong, or it will break. This video shows how to troubleshoot broken connections to get your apps working again.
- [Instructor] Sometimes when you test your application…you feel like you did everything right…and it just doesn't work.…For example, if I click Click me right here,…the label doesn't change.…If I close the application and return to Xcode…and I look at my code everything is actually…right in my code it's just like it was…in the previous movie.…So how do we troubleshoot when something is wrong…with our user interface objects?…One of the first ways that we can check that…is by looking at these circles…to the left of our line numbers.…
Notice that the label and window circles are filled in,…but the button clicked action is not filled in.…These circles appear…when you have the @IBOutlet…or IBAction call outs in your code.…These of course mean this variable…or property is an interface builder outlet…and the same for actions.…When we declare a method as an IBAction…with this call out it's saying this is an action…that's available to interface builder…to connect to a user interface object.…
So by having those call outs…we automatically get this outer circle.…
Author
Todd Perkins
Released
11/18/2016These Xcode tutorials help new developers install Xcode and start writing and editing code. Instructor Todd Perkins shows how to build a brand-new user interface (UI) with buttons and menus in Interface Builder, Xcode's intuitive UI design tool, as well as advanced designs that adapt to screen size, aspect ratio, and orientation changes. He reviews the version control and storyboard features, as well as the basics of schemes and behaviors. Plus, learn how to compile and debug apps, test apps in the iOS Simulator, and send your app to Apple for distribution in the App Store.
- What is Xcode?
- Installing Xcode 8
- Creating your first Xcode project
- Editing code
- Creating snippets
- Adding Git version control
- Making interface connections to the code
- Using Interface Builder
- Creating storyboards
- Pinning objects
- Compiling code with the LLVM compiler
- Working with schemes and behaviors
- Sharing resources in a workspace
- Catching common errors with Analyze and Fix-It
- Using the iOS Simulator
- Preparing an app to be published
Skill Level Beginner
Duration
Views
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Introduction
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Welcome47s
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1. Getting Started
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What is Xcode?1m 57s
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Install Xcode 840s
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Explore the user interface4m 59s
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Use tabs2m 2s
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Open files quickly1m 9s
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View the Xcode documentation2m 14s
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Use the Quick Help inspector1m 52s
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Import assets4m 57s
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2. Edit Code
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Create snippets4m 6s
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Use the Symbol Navigator2m 48s
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Prototype in a playground3m 44s
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3. Version Control
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Commit changes2m 34s
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4. Interface Builder Basics
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Explore Interface Builder5m 58s
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Use the Identity Inspector5m 33s
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Use the Attributes Inspector3m 55s
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Use the Size Inspector2m 45s
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5. Storyboards
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Understanding pinning7m 16s
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Modify pins3m 26s
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6. Compiling
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Work with schemes3m 1s
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Use behaviors1m 51s
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7. Debugging
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Use the debugger3m 42s
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Work with breakpoints3m 15s
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8. Workspaces
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Create a workspace4m 18s
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9. Static Analysis Tools
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Correct errors with Fix-it1m 54s
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Use the Analyze tool1m 48s
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10. The iOS Simulator
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11. Publishing Apps
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Send an app to Apple2m 40s
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Conclusion
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Next steps1m
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Video: Troubleshoot broken connections