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The Xcode Survival
Guide
Kristina Fox
Senior iOS Engineer
@krstnfx
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kristina.io | @krstnfx | #devweek2019
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Hi, I’m Kristina
⛸
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The Xcode Survival Guide
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✨
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Pete’s very strange day
)
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Color assets
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Lock Storyboard Elements
Lock -> All Properties
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20:00
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Multiple assistant editors
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Assistant editor view mode
All Editors Stacked Horizontally
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Select file view location
Alt + Shift + Click
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Change command-click option
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Quick Open function List
Ctrl + 6
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Search function signatures
Ctrl + 6
Just start typing
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//
// DryExecutionHandler.swift
// Resin
//
import Foundation
class DryExecutionHandler: NSObject {
override init() {
let network = Network()
network.executeDrying()
}
}
//
// RinseExecutionHandler.swift
// Resin
//
import Foundation
class RinseExecutionHandler: NSObject {
override init() {
let network = Network()
network.executeRinsing()
}
}
//
// StickExecutionHandler.swift
// Resin
//
//
import Foundation
class StickExecutionHandler: NSObject {
override init() {
let network = Network()
network.executeStickiness()
}
}
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//
// Network.swift
// Resin
//
import Foundation
class Network: NSObject {
func executeDrying() {
let url = "resin-prod.com/dry"
executeAction(url: url)
}
func executeStickiness() {
let url = "resin-prod.com/sticky"
executeAction(url: url)
}
func executeRinsing() {
let url = "resin-dev.com/rinse"
executeAction(url: url)
}
}
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//
// Network.swift
// Resin
//
import Foundation
class Network: NSObject {
func executeDrying() {
let url = "resin-prod.com/dry"
executeAction(url: url)
}
func executeStickiness() {
let url = "resin-prod.com/sticky"
executeAction(url: url)
}
func executeRinsing() {
let url = "resin-dev.com/rinse"
executeAction(url: url)
}
}
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//
// Network.swift
// Resin
//
import Foundation
class Network: NSObject {
func executeDrying() {
let url = "resin-prod.com/dry"
executeAction(url: url)
}
func executeStickiness() {
let url = "resin-prod.com/sticky"
executeAction(url: url)
}
func executeRinsing() {
let url = "resin-dev.com/rinse"
executeAction(url: url)
}
}
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User Defined Build Settings
Project file -> Build Settings -> User-Defined Settings
02:49
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✅
Stage 1
complete
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Device Crash Logs
1. Windows -> Devices and Simulators
2. Choose Devices tab
3. View device logs
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“Catch all” Breakpoints
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Editing Breakpoints
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Add an Action
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//
// Room.swift
// GasMask
//
import Foundation
class Room: NSObject, NSCoding {
var name: String?
var id: Int?
required init?(coder aDecoder: NSCoder) {
self.name = aDecoder.decodeObject(forKey: "names") as? String
self.id = aDecoder.decodeObject(forKey: "id") as? Int
}
func encode(with aCoder: NSCoder) {
aCoder.encode(self.name, forKey: "name")
aCoder.encode(self.id, forKey: "id")
}
}
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//
// Room.swift
// GasMask
//
import Foundation
class Room: NSObject, NSCoding {
var name: String?
var id: Int?
required init?(coder aDecoder: NSCoder) {
self.name = aDecoder.decodeObject(forKey: "names") as? String
self.id = aDecoder.decodeObject(forKey: "id") as? Int
}
func encode(with aCoder: NSCoder) {
aCoder.encode(self.name, forKey: "name")
aCoder.encode(self.id, forKey: "id")
}
}
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//
// Room.swift
// GasMask
//
import Foundation
class Room: NSObject, NSCoding {
var name: String?
var id: Int?
required init?(coder aDecoder: NSCoder) {
self.name = aDecoder.decodeObject(forKey: "names") as? String
self.id = aDecoder.decodeObject(forKey: "id") as? Int
}
func encode(with aCoder: NSCoder) {
aCoder.encode(self.name, forKey: "name")
aCoder.encode(self.id, forKey: "id")
}
}
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struct Rooms: Codable {
var name: String
var id: Int
}
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Custom Code Snippets
1. Highlight code
2. Drag to code snippets window
3. Drop & fill completion shortcut
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Custom Code Snippets in Use
4. Profit
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✅
Stage 2
complete
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SUDDEN
DEATH
☠
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> Your colleague is having a hard time debugging an animation in
simulator. What do you suggest?
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Debug animations
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> You want to use one of your own photos to test your app. What’s the best
way to load it in simulator?
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Drag and Drop Media into simulator
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> What’s the easiest way to find all strings that look like
email addresses in your app?
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Pattern Matching in Search
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Pattern Matching in Search
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> Looks like your colleague used a regular expression
before to search, but can’t remember what it was. What do
you recommend?
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Search history
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> Say you have to replace some old prefixed enum code:
enum APPLFontStyle {
case APPLFontStyleBold
case APPLFontStyleItalic
case APPLFontStyleUnderline
case APPLFontStyleStrikethrough
}
> Know any shortcuts?
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Multiple Cursors
Option + drag (rectangular selection)
Ctrl + shift + click (place multiple cursors)
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> How do you debug an issue where the root cause is poor
network connectivity?
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Network link simulator
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Network link simulator
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Network link simulator
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Network link simulator
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Network link simulator
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30 questions later…
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> What is your spirit animal?
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✅
Stage 3
complete
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456
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Based on a true story
Just kidding
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Xcode Survival Guide Cheat Sheet
Name Location Shortcut
Color assets Assets folder Add color set
Lock storyboard Identity Inspector Lock - all properties
Side-by-side editors View -> Assistant Editor All editors stacked horizontally
Place file in editor Keyboard/Mouse Alt + Shift (Click on file)
Select Code Structure Keyboard/Mouse Command + click (on function)
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Xcode Survival Guide Cheat Sheet
Name Location Shortcut
Pre-Xcode 8 style Jump Xcode Settings ->
Navigation
Command-click on Code ->Jumps to
Definition
User Defined
Environment Variables
Project File -> Build
Settings
Add variables to User-Defined Settings
Device Logs for CrashesWindow -> Devices and
Simulators
View device logs
Catch All Breakpoints Breakpoints panel Plus button on bottom left
Edit Breakpoints Breakpoints Panel Double-click blue breakpoint to bring up
action menu
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Xcode Survival Guide Cheat Sheet
Name Location Shortcut
Slow animations Simulator -> Debug Slow animations
Custom photos Simulator Drag and drop photo
Pattern matching in
search/Search History
Search sidebar Click on magnifying glass drop down,
Insert Pattern/Recent Queries
Multiple cursors Editor Ctrl + shift +click (place cursors)
Option + drag (rectangular selection)
Simulate poor network System Preferences Network Link Conditioner
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Paul Hudson’s Swift Knowledge Base
https://www.hackingwithswift.com/example-code/
API Endpoint Configuration
https://medium.com/@danielgalasko/change-your-api-endpoint-environment-
using-xcode-configurations-in-swift-c1ad2722200e
Type Safe JSON in Swift
https://medium.com/grand-parade/creating-type-safe-json-in-swift-74a612991893
WWDC-Style Code Snippets
https://kristina.io/tutorial-wwdc-style-live-code-snippets/
Resources
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How To Simulate A Bad Network Connection On Your iOS Device and
Simulator
https://www.natashatherobot.com/simulate-bad-network-ios-simulator/
Regular Expression Search
https://medium.com/@onmyway133/regular-expression-search-in-
xcode-28a1a17fc863
Twitter iOS Community (@twostraws, @aligatr, @_inside & many more!)
https://twitter.com/krstnfx/status/940265683690180608
Resources
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Thank you! Questions?
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