When comparing Barcode Scanner (ZXing) vs Xposed Frameworks, the Slant community recommends Xposed Frameworks for most people. In the question“What are the best power user tools for Android?” Xposed Frameworks is ranked 2nd while Barcode Scanner (ZXing) is ranked 12th. The most important reason people chose Xposed Frameworks is:
Xposed can radically modify the behavior and look of the system and apps without having to modify any APKs. This means that Xposed modules can work with different versions of the same ROM or even different ROMs altogether.
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Pros
Pro Keeps history of scanned codes
You can keep a history of every code scanned, or just the ones that you've scanned more than once.
Pro Can generate QR codes for apps, bookmarks, contacts, and clipboard data
Pro Auto-use Flash
Can turn on from settings to turn on the Flash light automatically.
Pro Supports Wi-Fi QR codes
Can be generated on https://zxing.appspot.com/generator/
Pro Open source
Barcode Scanner is an open source project and the Github repository can be seen here.
Pro Automatically open webpage when scanned
Pro Long history and strong support
Pro Does not mess with APKs
Xposed can radically modify the behavior and look of the system and apps without having to modify any APKs. This means that Xposed modules can work with different versions of the same ROM or even different ROMs altogether.