I am currently programming an "One time after first login tutorial" and since it should be only shown one time after the user starts the application for the first time, I would like to remove all the unnecessary files like for example pictures which I only use in this tutorial.
So is there a way to remove some of these files which are shipped within the .apk ?
The Android apk is a read only file, so once a file is part of an apk, it cannot be removed.
An option would be to download the files from the network the first time the user installs the app and then put it on the sd card or locally and then delete it when you want it.
Related
Trying to make some sense of this complete mess of scoped storage.
So I'm storing some files (logs) generated by App A inside the Download folder.
I'm using Mediastore/ContentResolver and no problems with that either for read or write access as long as it's from App A.
But then App B needs to read these files and here comes the problem.
Same way using Mediastore/ContentResolver but the files seem invisible for queries.
Download is supposed to be a Shared Storage, but files are indeed generated as -rw-rw--- which means no permission for others which could explaind why App B does not sees files from App A if they are not in the same group.
Would the Storage Access Framework method work around this?
Thi not tried it yet because poping system window's is definitely not something I wanted as a user experience for my App.
Thanks.
If the second app has 'all files access' with MANAGE_EXTERNAL_STORAGE it can also list the files of the first app.
Otherwise you can let the user of the second app pick those files with ACTION_OPEN_DOCUMENT of Storage Access Framework.
You better store your files in a sub directory as then second app can pick complete directory with ACTION_OPEN_DOCUMENT_TREE and list all the files.
I created a project which uses Fragments, and in one of them I want to add some clickable icons that will allow to download a file (one per icon).
I have the files stored on my computer.
I suppose that they have to be copied into my application.
How I can implement this in the code?
I hope that this picture can explain what I want to do.
will allow to download a file and they have to be copied into my application don't match: If the files are already on the device (once your app is installed), what is the sense of downloading those files again?
Therefore, either provide your files inside your app or use a file server and download them.
If you decide to provide the files in your app, this will increase the installation time.
But it would not require an internet connection to download the files again.
So, simply put your files in the raw or in the assets folder and that's all.
Then simply access your files from that folder.
If the folder isn't already found in your project, simply create it and drop your files in it.
Hi i am looking into an android development , as we all know when we build the project it makes an APK that is the whole program. but is it possible to make a an android project / APK that would be able to use external files to include more info into the project.
like say for example i have a list commands or functions in my list , but i dont want it to be added into my APK build , is it possible to use it externally?
i was curious because something like COC and other games after downloading it , then downloads extra data from the net , more into updates for the whole game.
how is this possible or is it possible to do , and use functions or source codes externally and not include it into the APK , and also the proper usage of it
Any Android App can connect to the Internet and save downloaded data files to use as they need, without requiring to include them inside the APK. Indeed, for many games (and other Apps having large data sets), it's a sensible option.
There are a couple of things to be aware of:
Android restricts where (on the filesystem) you can save files. And no matter where you save the files, the user can delete them at any
time. Your App should be able to cope with this.
The files should only ever be data files - not executable code. Attempting to
execute downloaded files is likely to put your users at risk
(depending on the permissions your App was installed with) and is also likely to get your App marked as malware.
You should read the Android documentation on Data Storage to learn a bit more about it.
In the app I was helping developing, the users seen that each time they use apps like CM Security to clean 'junk', the files inside the folder associated with the app were instead considered as 'junk' and are deleted.
The app itself would create the folder in the C side of the code instead of using Java.
Firstly, when the app is first launched, custom C code will check if the app folder (e.g. 'Game') exists. If it doesn't, it makes it (regardless of OS. The app is cross-platform, sorry I forgot to say it.) It puts it in the external SD card ('sdcard/'). When it's seen, it can now run the app.
I get about the getFilesDir, but since the directory is made using C code and not through the java activity, it doesn't count as its app directory.
Is there a way to link the folder to the Android code so that it would be recognized as the app folder?
Consider an app with a set of data files (could be music or pictures or locations or indeed anything at all) embedded in the apk.
I now want to provide to the user additional data files , either to replace or add to the original data files - the user should be able to select which files to download and not have to reinstall the whole app.
So the question is it possible to do this non-programmatically - like by providing extra apk files for the app but which only contain single data files?
This is a good use case. A simple idea could be, ask the user to check for updates, you download a XML file which defines your updates. Parse this XML file and show what the user needs to download. Then you download and save it to desired locations. Always version the XML file so that you know if updates are avialble or not!