Understanding the Relationship between Interface and Class Definitions in Objective-C: A Guide to Forward-Declaring Classes with @class

Designing Views with Automatic Resize: Mastering UIViewAutoresizing and Auto Layout Constraints

Based on the provided information, it appears that there are multiple approaches to scaling content based on screen resolution and device resolution. Here's a summary of the different methods:

Customizing SegmentedControl Divider Colors in Swift

Preventing iOS App Installation on iPhone 4/4s: A Guide to Device Compatibility and Architecture Targeting

Customizing Button Background Images in iOS using Subclassing and Delays

Understanding FBAudienceNetwork Crash with iOS 7.0.1 Version in iPad Only: Resolving the Issue

Understanding and Fixing the Mach-O Linker Error in iOS Development

Understanding UITapGesture and Resolving Common Issues in iOS Development

Creating Programmatically Generated WKWebView in Swift: A Flexible Approach to Embedding Web Views