I want to develop a code to browse the all folders and files in android emulator including sd card and internal memory storage. In Java there is JFileChooser available, in android how can i implement this functionality...?
You cannot browse all files in an Android device unless it is rooted. You need to have root privileges to access most of the file system (and you don't...).
Also, AFAIK there is no such API, but read data storage section in the android documentation to see what you can do.
This should help you
http://groups.google.com/group/android-developers/browse_thread/thread/42c92c01613beb8b?pli=1
i.e. As a widget not available , but you can use an app called OI File Manager and use its properties
Related
I've tried several folders but looks like no file is created.
External read & write permission have been enabled.
The code run without any sign of error. (as given below)
Here is the screenshot of the code inside mainactivity.cs (this is for testing purposes).
I also assume that since this is platform specific, the code must be in android project.
string filename = Path.Combine(Xamarin.Essentials.FileSystem.AppDataDirectory, "count1.txt") ;
StreamWriter sw = File.CreateText(filename);
sw.WriteLine("asad ini test");
sw.Close();enter code here
1b. I 'm using Android 6.0 phone, but I can't find such folder /data/user...
(I'm not sure if such folder is targeted special version of Android)
I search both internal /Android/myproject/files/ and found nothing
I search external SDcard /Android/myproject/files/ and still found nothing
(please look at the my android phone folders, i can't even find /data folder
Once, this is accomplished the next step would be how to call this function from the generalproject (non android, non IOS, non UWP project).
Example to write file given in xamarin document.
Where should this code reside? in general project folder ? or, android project folder?
The term "external" used in android is very misleading. It doesn't mean the external removable SD card rather some folders that don't require "root" permission. Therefore, initially I can't find the folder which I save a file into.
Another reason is each phone manufacture uses different name, hence it is very difficult to get an absolute address of an external removable SD Card.
More details is explained in blog_external_removable_SD_Card
You can't write to the removable SD Card
an old post here
i'm currently exploring android file / directories operations and i'm wondering how can i browse internal and external storage the same way a windows explorer could do ?
actually i'm reading this guide and following this tutorial and at this time i have no access to the hole storage hierarchy not only for my application, what i'm expecting is to be able to read files and directories names/contents, choose a path and so on...
what components should i use and if possible what free API can help me do this in the future ?
thank you.
If you want to create a File Explorer you could use a component like AndroidFileExplorer otherwise you have to build it from scratch. Remember also that some paths are not accessible without root permission.
I just want to view the files(especially the .png files) associated with one of the application in my mobile. The application is actually installed(moved) in the SD card.
The issue is ..I could not find the application in the SD card. I am using a file browser called 'File Manager' to browse through the SD card. Can someone help me on this.
It should be here:
/mnt/sdcard/Android/data/your_package_name/
Some hardware implements the path to the external storage different.
/mnt/sdcard/Android/data/your_package_name/
/mnt/sdcard-ext/Android/data/your_package_name/
You may be able to get a better view of what is on the device by using the ADB Shell. If you still have trouble at this point trying running grep or find from the shell.
UPDATE
Most of the time the files associates with your application are in the directory with your application. The application is installed in /data/data/your.package.name/. However you will need root access to get here if you are on a phone, I think the emulator lets you get here. As far as external storage... yea its a pain, to much fragmentation in the market. You have to programmatically check the location of the external storage.
On my device with Android 2.3.6 apps moved on the SD card are located into a directory named .android_secure as .asec files (see http://www.fileinfo.com/extension/asec).
They are not visible from the standard "Archive" browser which shows the hidden directory as empty.
The files are also encrypted so I guess no access to the images within is possible.
I just need a confirmation. If my app saves data to the phone's sdcard (/sdcard/com.example.myapp/file.mp3), can a user browse to such folder on the card and mess with the files (delete, rename, etc.)? I cannot find such info on the developer's site.
Thanks
Yes he can, there is no problem whatsoever. He will be able to see the files and modify them via the built in file manager, via code or from the PC when the device is connected.
Yes he can modify the files on the sdcard. You can verify it by e.g installing Astro and browse the sdcard, and modify files on your phone.
The SD card is capable of storing files with crypto protection called CPRM. Most devices that use SD cards don't bother to support it. Mere mortals such as ourselves cannot obtain keys to use the CPRM features on the card.
hello guys i need small help in understanding file system of android
Now in windows for example we create files using paths like "c:/mytextfile.txt" or "c:/folder/mytextfile.txt".Now how can i access files and folders in android i mean whats the path like.
Does the phone support file browser instead of relying on third party apps??
Android does not have a native file browser, but there are numerous third-party ones (Astro comes to mind). The filesystem of Android is that of Linux; the path separator is / and the FS grows from a single root called /. So, you have your app packages under /data/apps, and so forth. Unless the phone is jailbroken ("rooted"), you won't get to see the whole filesystem - permissions get in the way. This applies to all Android applications, they are sandboxed - that is, they don't get access the whole filesystem. There are API calls to get the path to the current application's sandbox directory.