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README: document the Android 16+ local-network permission; drop the retired 8080 server

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Chrome on Android 16/17 refuses to reach LAN addresses without the local
network permission, surfacing as ERR_LOCAL_NETWORK_PERMISSION_MISSING (or a
generic 'site can't be reached'), which looks like a dead server. Also removes
the now-stale 'python3 -m http.server 8080' instructions, since that server is
no longer running and its URL returns connection refused.
This commit is contained in:
AndPictures
2026-10-14 11:34:25 -07:00
parent 2e7bf11055
commit 87fc4d302e
1 changed files with 10 additions and 7 deletions
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17
README.md
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@@ -145,15 +145,18 @@ Open that link in any phone's browser on the same LAN and install it, or scan
`docs/download-qr.png`. The source lives at
http://192.168.123.18:3001/umbragit/AndPictures
### Serving the APK over the LAN
**If the browser says the site can't be reached** (Chrome's
`ERR_LOCAL_NETWORK_PERMISSION_MISSING`): Android 16 and newer block apps from
reaching LAN addresses unless the app holds the *local network* / "Nearby devices"
permission. Tap **Allow** when the browser asks to "find, connect to, and determine
the relative position of nearby devices" (if it was denied earlier, re-enable it
under *Settings -> Apps -> Chrome -> Permissions -> Nearby devices*), then open the
link again. Chrome also warns "File might be harmful" for a direct APK download -
choose **Download anyway**.
```bash
cd app/build/outputs/apk/release
python3 -m http.server 8080
# on the phone's browser: http://<this-machine-ip>:8080/app-release.apk
```
### Installing
Download it in the phone's browser, open it, and allow installs for the browser.
Download the APK in the phone's browser, open it, and allow installs for the browser.
Note: switching a device from the **debug** build to the **release** build requires
uninstalling the debug app first (they are signed with different keys), which also