常见问题Frequently asked questions
关于「截图归位」的实在回答 —— 它怎么判断来源、权限用来干什么、搜索怎么跑、为什么传不出去。没找到想问的?页脚可以写信。Straight answers about how Screenshot Sort works — how it identifies a source, what the permissions are for, how search runs, and why nothing can leave your phone. Anything missing? Write from the footer.
「截图归位」是做什么的?What does Screenshot Sort do?
把你手机里已有的截图,按来源应用自动分组 —— 小红书、微信、浏览器、银行 App 都能认出来。你不用打标签,也不用手动整理。它还能搜截图里的文字,识别在手机本地完成。It groups the screenshots already on your Android phone by the app they came from — Reddit, WhatsApp, your browser, your banking app — automatically. You do not tag or file anything. It can also search the text inside screenshots, with recognition running on the device.
它怎么知道这张截图来自哪个应用?How does it know which app a screenshot came from?
截图产生的那一刻,应用查一次当时前台是哪个应用,把答案写进本地索引,然后不保留任何使用记录。它不会去看图片内容来猜。At the moment a screenshot appears, the app checks once which app was in the foreground, saves that answer in a local index, and keeps no usage history. It never looks at the image content to guess.
为什么要「使用情况访问」权限?给了安全吗?Why does it ask for usage access, and is that safe?
这是 Android 唯一会告诉应用「当时屏幕上是哪个应用」的途径。只在截图那一刻前后的一个很窄的时间窗里读一次,而且只存下结果里的应用名 —— 你的使用记录不会被保存、画像或上传。这个权限是可选的:不给也能用,只是来源显示为「未知」。Usage access is the only way Android will tell an app which app was on screen. It is read in a narrow window around the moment of capture and only the resulting app name is stored. Your usage history is never saved, profiled or uploaded. The permission is optional: without it the app still works, sources just read as unknown.
装这个应用之前截的图怎么办?What happens to screenshots I took before installing it?
归不了类 —— 因为 Android 大约 48 小时后就丢掉了前台应用的使用记录,证据已经不存在了。这些截图单独放一处,可以按月份浏览。They cannot be attributed, because Android discards foreground-app events after about 48 hours — the evidence is already gone. Those screenshots are kept in their own section and can be browsed by month.
它会移动、复制或修改我的截图吗?Does it move, copy or modify my screenshots?
不会。图片原地待在系统相册里,应用只在本地记一份「哪张来自哪儿」的索引。每张截图从头到尾只有一份。No. The image stays exactly where it is in your gallery; the app only keeps a local index of where each one came from. There is only ever one copy of each screenshot.
在应用里删除截图会怎样?What happens when I delete a screenshot in the app?
删除必须经过 Android 系统自己的确认对话框,图片进入系统回收站,大约 30 天内可以恢复。这个应用不会永久删除任何东西。Deleting goes through Android's own confirmation dialog and moves the image to the system trash, where it can be recovered for about 30 days. The app never deletes anything permanently.
搜截图里的文字是怎么做到的?How does searching the text inside screenshots work?
文字识别用 ML Kit 在手机上跑,一次覆盖中英文,后台慢慢建本地索引。什么都不会上传 —— 这个应用根本没有网络权限。设置里那个开关同时负责删除:关掉就立即清空已经读出来的全部文字。Text recognition runs on the phone using ML Kit, covering Chinese and English in one pass, and builds a local index in the background. Nothing is uploaded — the app has no network permission. The switch in Settings also deletes: turning it off clears every word already read.
它会不会把我的截图传出去?Can it upload my screenshots?
不会,而且不是靠承诺:这个应用没有申请 INTERNET 权限,技术上就发不出任何东西。构建时有一道校验读合并后的 manifest,这个权限一旦出现,打包直接失败。No, and not as a promise: the app does not request the INTERNET permission, so it is technically incapable of sending anything. A build-time check reads the merged manifest and fails packaging if that permission ever reappears.
认错了来源怎么办?What if it gets a source wrong?
打开那张截图,点「改」选对的应用就行。改过的永远算数 —— 后面的重新扫描不会把它覆盖掉。Open the screenshot and tap Change to pick the right app. A correction is permanent — later re-scans never overwrite it.
把来源那个应用卸载了会怎样?What if I uninstall the app a screenshot came from?
分组仍然显示正确的名称和图标。Android 只在包还装着时给得出这两样,所以每次查到就顺手存一份几 KB 的快照,之后当作兜底来用。The group keeps the right name and icon. Android only supplies those while the package is installed, so each successful lookup is cached as a few-kilobyte snapshot and used as a fallback afterwards.
有 iPhone 版吗?Is there an iPhone version?
没有,以后也不会有。iOS 不告诉应用「截图那一刻前台是哪个应用」,所以这个产品最核心的那件事在 iOS 上做不出来。No, and there will not be one. iOS does not tell an app which app was in the foreground when a screenshot was taken, so the core feature cannot be built there.
是免费的吗?Is Screenshot Sort free?
完全免费。没有广告、没有统计、没有订阅、没有内购。需要 Android 13 及以上。Yes, entirely. No ads, no analytics, no subscription and no in-app purchases. It requires Android 13 or later.