Dosya Dolabı — a PDF organizer for Android where categories are folders

⚡ The gist in 5 seconds - Dosya Dolabı is an Android app for tablets and phones built with Flutter that sorts PDFs, slides, and documents into categories, and the categories become real folders on the device. - Available as an APK from the Releases page, MIT license, early access status, Turkish interface, no internet permission. - Runs on Android 11+ and requires the "All files access" permission, which is restricted on Google Play; the APK is signed with a debug key. ### 🔍 What was found Dosya Dolabı ("File Cabinet") is designed for tablets and adapts to phones: on screens of 600 dp and up, the search field collapses into an icon, row buttons become icons, and categories open in a slide-out panel. The author says the app has been tested on an emulator and a real device, with no known issues. Incoming documents accumulate in the "Gelen Kutusu" (Inbox): the app collects PDFs, PPT/PPTX, DOC/DOCX, XLS/XLSX, images, and archives from Download, Documents, WhatsApp/Telegram folders, Bluetooth, and the SD card, hiding videos,.apk files, and incomplete downloads. The user then sorts them into categories like "Dersler › Matematik" (Lessons › Math). Categories can be nested, renamed, moved, and deleted — on deletion, the contents are not lost but moved up to the parent. A key detail: each category is a real folder, files are physically moved there and remain in place even after the app is uninstalled, with the root named "Dosya Dolabı" in internal storage. Navigation and file handling: previews right on the cards (first page of a PDF, images with EXIF orientation and transparency, built-in OOXML/ODF thumbnails, first lines of text and CSV), search by name with Turkish case folding, multi-select via long press, an "GERİ AL" (undo) button after every operation, and a trash bin with 30-day retention. ### 💡 Why it matters Files don't get locked away in a closed app library — they stay in regular folders, are visible in the system file manager, and survive the uninstallation of the organizer itself. The local-first approach is underscored by the absence of an internet permission: nothing is sent out. The downsides are also stated honestly: moving files between folders requires Android 11+ and the "All files access" permission, which is restricted on Google Play, which is why the project is distributed only as an APK. For.pptx files you'll need a third-party app like WPS Office; for PDFs the built-in viewer is enough. ### 🧩 Context The limitations are stated plainly: slide and Word pages are not rendered — if there's no ready-made thumbnail inside, only text is shown (in files saved by PowerPoint, it's usually there). Scroll smoothness on a folder with hundreds of documents hasn't been measured yet. The APK is signed with a debug key, so an update will install over the old version only if built on the same computer with the same keystore. Building requires Flutter 3.47, Android SDK 36, JDK 17+, and NDK 28.2.13676358, which on Windows must be installed manually due to the ";" character in the package name. The code is organized in layers — library.dart, preview.dar

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