SGQRCode Documentation

To integrate SGQRCode into your iOS project using CocoaPods, add the following line to your Podfile:

pod 'SGQRCode', '~> 4.1.0'

SGQRCode requires access to the camera and photo library. You must add the following keys to your Info.plist file to provide usage descriptions to the user:

• NSCameraUsageDescription: For camera access.
• NSPhotoLibraryUsageDescription: For photo library access.

If you encounter the error [!] Unable to find a specification for SGQRCode during installation, run the following commands in your terminal to refresh your local pod specs:

1. pod repo remove master
2. pod setup

Implement these delegate methods to handle scanning results and environmental changes like brightness.

SGScanCodeDelegate Called when a QR code is successfully scanned.

SGScanCodeSampleBufferDelegate Called to provide brightness information, which can be used to manage the flashlight (SGTorch).

// SGScanCodeDelegate
- (void)scanCode:(SGScanCode *)scanCode result:(NSString *)result {
    <#code#>
}

// SGScanCodeSampleBufferDelegate
- (void)scanCode:(SGScanCode *)scanCode brightness:(CGFloat)brightness {
    <#code#>
}

To implement QR code scanning, use the SGScanCode class. You must set a preview view and implement the SGScanCodeDelegate and SGScanCodeSampleBufferDelegate protocols.

Note: Version 4.x uses a Delegate pattern, whereas version 3.5x used Blocks.

The following classes are the primary interfaces for the library:

• SGScanCode: Handles QR code scanning.
• SGScanViewConfigure: Configuration for the scanning view.
• SGScanView: The scanning view component.
• SGPermission: Manages camera and photo library permissions.
• SGTorch: Manages the device flashlight.
• SGQRCodeLog: Provides debugging logs.