I have a text file in a compressed file (RAR/ZIP). On my desktop, I happen to be able to edit it, and then WinRAR or 7-Zip sends a message saying the text file was changed and asking if I want to update it. The same thing seems impossible to do in Android 8.1.0. I have tried ZArchiver, ZArchiver Pro, RAR from Rarlab, and several text editors, but in the end, the zip file is never updated with the changes I make in the text. I also tried MiXplorer and MiX Archive (the archive plugin), and although it's a powerful tool, it's not working. When I try to save the text file, it says "Not supported!" regardless of the zip or rar file. I wonder if it's because the archive has a password. It also seems it can't open the zip file directly from the Dropbox app, providing the same "not supported!" error. Does anyone know a way? Or a way that allows me to set a password on a text file that is cross-platform between Android and Windows? Any hint, or any other tool I could try? In the settings of MiXplorer, it doesn't seem anything could help.

My question is related to the repackaging of a mobile app. This app uses v1 signing scheme and I did the following: I fetched the apk file from the playstore using adb and I signed with my keystore using apksigner. Now, when I launch this app on my smartphone, it is showing the following exception. I took the original apk, I change the format to *.zip and unzipped it, and then again, converted back to apk and I applied zipalign on the apk. The apk gets successfully installed on the smartphone but when I launch this app, I am getting the following exception. In this scenario, I didn't modify any file. In the past, I have done this same process for few app's apk and the app is running successfully. If you observe the above two exception's image, the 1st three lines are same. My doubt is: - Irrespective of the signature change, we are getting the same exception (atleast the 1st three lines). What can be the reasons regarding the same? (Also, I have used the zipalign for the proper alignment) - Which type of framework this app is using such that even without changing the source code, the app is getting crashed? Any help/inputs regarding this domain is highly appreciated.

Usual [shar archives](https://en.wikipedia.org/wiki/Shar) fail to extact in adb shell due to problems with lock directory and temporary files for HERE documents. Zip archives [are also not an option](https://android.stackexchange.com/questions/18711/how-to-extract-zip-through-adb-shell) . How do I make an archive that can be easily extracted to /data/local/tmp/ out of the box on unrooted Android without busybox?

I've searched throughout the web with no joy. My background: I've got 16+ years in software (I'm out of it but not before I built some Android apps for myself). My problem is that I'd like to reduce the amount of space used on my phone for old messages but I'd like to keep them available. Something like an automated system that prunes old messages to off-site (cloud) storage but makes them available upon demand. What I want, is a system that lets me keep my chats growing indefinitely while keeping only a specified amount of space used on the phone. Thoughts? Suggestions?

Currently I have installed ~500 apps, mostly productivity apps and tools of various types. I would like to have only ~100 most frequent apps installed and keep the rest (~400) uninstalled, stored in the file system along with their settings. If needed, I would like to restore such a stored app (ideally including its settings), use it and when no longer needed, archive + uninstall again. The sample of such an app is a Latin lexicon or some infrequently used measurement tool. **Is there an app or some procedure for this task?** Or the truth is that there is no tool which can easily backup and restore *settings* of 3rd-party apps (only the APKs themselves)? Could you refer to a tool who could at least partially automate this? At least some APK install+deinstall tool keeping user-friendly record about each app and showing **Archive**/**Restore** button next to it? --- The reason of my expectation is unnecessarily high battery consumption with ~500 installed apps, because many of them also install their own services, slowing down the device. I want to have them at hand if needed (including their settings) but normally keep them away from the OS. The phone is not rooted.

Both are some kind of storing mechanisms. Both occupy memory space. But what is the difference between archival of a whatsapp chat and backing up a whatsapp chat?

I have the app Solid Explorer installed but the .rar file doesn't seem to be opening properly. Which tool can I use to extract .rar files properly? OS: 4.1.1 Device: S3