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There are many keyboard shortcuts in Xcode 7 that can make yourself a more efficient programmer. They can help you quickly navigate around your code files to find and fix bugs, or to add new features to your apps.
When you’re in the zone, you want to be able to access the code files quickly, or the adjust Xcode’s panels to fit your small laptop screen.
The following keyboard shortcuts for Xcode 7 are the best ones to learn first. You will probably use them every day after you learn them.
Xcode Navigation Keyboard Shortcuts
1. Project Navigator: Command + 1
Quickly view all your code, images, and user interface files.
2. Show/Hide Navigator Panel: Command + 0
When you’re short on screen space, you’ll want to close anything that gets in the way. The happens a lot if you use the Assistant Editor (tuxedo) or when you design the user interface and connect it to code.
3. Show/Hide Utilities Panel: Command + Option + 0
The Utilities Panel is primarily used when you’re editing your user interface files. If you are only writing code, you can hide it.
4. Open file in Assistant Editor: Option + Left-click on file in Project Navigator
A quick way to open the Assistant Editor (Tuxedo button top right) is to Option click on a file you want to open side by side with the currently opened file.
Xcode Search Keyboard Shortcuts
When you are editing code, adding new code, or trying to fix a bug, searching is the fastest way to find something. Instead of scrolling through hundreds of lines of code you can find all occurrences of a variable, or jump to a specific line of text.
5. Find Navigator (ie. Search): Command + Shift + F
Find all the times you mentioned a variable or method name with the project search. You can match based on case, or ignore upper and lower case letters.
You can also replace all occurrences of a variable name with a new variable name.
6. File Jump Bar: Control + 6 (Type the method/variable name + enter to jump)
Jump to a line of code within your current code file. If you have hundreds or thousands of lines of code, you can quickly narrow down where you need to insert code to support a new app feature.
7. Open Quickly: Command + Shift + O
If you prefer to only use the keyboard and not the mouse, you’re going to enjoy Open Quickly. It let’s you just type and jump to a method definition or a specific code file.
8. Jump Bar and Open Quickly Search Typing Shortcut
You can type the first letter of each word, which allows you to quickly switch to a file or find a particular line of code.
Example, in ViewController.Swift press Command + Shift + O and then type vDL. The first result will be the function with the name viewDidLoad()
9. (Objective-C or C++) Switch between .h and .m files: Control + Command + Up Arrow
If you are writing Objective-C, C++, or using Open Source code written in either language, you might need to lookup existing code.
You can quickly switch between two related code files, like the header and implementation files in Objective-C using this Control + Command + Up Arrow shortcut.
If you’re writing code in Swift, you won’t need to worry about this shortcut, since Swift uses a single code file.
App Building and Cleanup
To try out your new app you have to run it, and occasionally Xcode doesn’t feel well, so you may have to clean it up.
These shortcuts will keep you writing code without stopping to use the mouse as much.
10. Run the app: Command + R
When I write code, I routinely use this command to make sure the app is running bug free. The more often you test your app the better, since you can find and fix bugs early, before they become big problems.
11. Clean the project: Command + Shift + K
Occasionally Xcode will freeze, or something in your app becomes unresponsive or unpredictable. When that happens you’ll first want to clean and then re-run the Xcode project.
If that still doesn’t fix the problem, close Xcode and re-open it again.
Try to run the app, and if that doesn’t work, you need to see if there’s an error message that you can Google for more help.
You shouldn’t have to do this too often, since it’ll make building your app slower. It removes all the intermediary files and recreates them which takes more time to complete.
12. Build the app: Command + B
Checking to make sure the code you write is in working order is something you’ll want to do often.
Even though Xcode checks it shortly after writing, it can sometimes be delayed, or give false errors. Building your app project allows you to make sure it’s in working order before you go to code the next feature.
You don’t always have to run the app, if you are making minor changes, and that’s where building can help you do a quick check, so that you can get back to adding the next line of code.
Documentation and Help
Learning how to help yourself is equally important. If you haven't already taken a look at the Xcode documentation, use these shortcuts to lookup related code reference.
Read or skim some of the reference guides to get better acquainted with the code that Apple provides, which you can use to make more robust iPhone apps.
13. Documentation and Reference: Command + Shift + 0 (Zero)
After you install all the documentation with Xcode, which it should do in the background after installing it. You can search the documentation offline, which is great when you’re traveling and you’re trying to figure out how to add a new screen or feature to your app.
Open the Documentation and Reference and search for a keyword that you’ve seen in code. You should be able to find some additional resources and sample projects through the Xcode documentation.
14. Quick Help: Option + Left-click on class or method name
Inline help can make it easier to learn what a class or piece of code is actually doing. There’s a lot of code that’s already written, which you can leverage with the help of Quick Help.
Hold Option and Left-click on a variable, class, or method name to get more details. You can quickly jump to the documentation, if you click on the reference link in the bottom of the popup.
Pro Tip: Jump directly to the reference guide by double-clicking the left mouse button while holding Option over a class name.
What Shortcuts do you use?
Share what hotkeys make you faster or more effective.
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