B4A Library File handling library

HotShoe · Sep 24, 2014

ericvanderhoeven said:
Hi,

can I use this lib to copy an edited version of the build.prop to /system/?

I am having a bit of trouble doing this via code. The device is rooted as e.g. romtoolboxlite can be used to edit /system/build.prop manually and that saves just fine..

But if I use code like

busybox cp /mnt/sdcard/whatever.txt /system/build.prop

I get ''read only file system'' returned :-(

Thanks,

Eric

/system is mounted as read only by default. you'll need to remount it as rw to write to it.

sanjibnanda said:
hello ,

same error here, i tried all sort of combinations , but the lib reference to MLsmb does not show up (though it is there in IDE Tab)

could you see into this?

regards

There has to be something going on with so many reporting it. I will look into this later today.

Thanks,

--- Jem

HotShoe · Sep 24, 2014

Well, you guys are right, MLsmb was broken. I use a file server to keep my projects and library source. That way I don't have to guess which machine has the latest version of a project/app/library, etc. Unfortunately, I did the separation of the libraries on a laptop and the version on the file server was a "work in progress" and not the finished version.

Please get the MLsmb-1.51.zip file attached to the first post and let me know if it still acts strange.

Thanks,

--- Jem

sanjibnanda · Sep 25, 2014

HotShoe said:
Well, you guys are right, MLsmb was broken. I use a file server to keep my projects and library source. That way I don't have to guess which machine has the latest version of a project/app/library, etc. Unfortunately, I did the separation of the libraries on a laptop and the version on the file server was a "work in progress" and not the finished version.

Please get the MLsmb-1.51.zip file attached to the first post and let me know if it still acts strange.

Thanks,

--- Jem

Thanks ... works now.

tpakis · Oct 1, 2014

Hello Jem, I am trying to run the sample smbtst, but i get "error listing smb://". The library and jcifs file are properly installed, any idea what's wrong?

HotShoe · Oct 1, 2014

tpakis said:
Hello Jem, I am trying to run the sample smbtst, but i get "error listing smb://". The library and jcifs file are properly installed, any idea what's wrong?

Is Wifi is turned on and connected to your router ok?

tpakis · Oct 4, 2014

Yes everything is connected no firewall or anything like that

HotShoe · Oct 5, 2014

2 or 3 others have reported this in the past, and I still don't know why a few can't get an smb link. It may have to do with router configuration or something in the code that I just can't see. In all of the other cases the b4a smb library works, so for now, I suggest you stick with that until I can find a reason for the failure and a solution. I have been through the SMB library and don't see anything structurally different in there than I am doing.

Thanks,

--- Jem

Mashiane · Mar 9, 2015

Brilliant stuff!!!

HotShoe · Mar 10, 2015

Mashiane said:
Brilliant stuff!!!

Thank you sir!

--- Jem

johndb · Apr 27, 2015

HotShoe said:
Update on Samsung and other devices

Well it seems update 1.40 will NOT solve the problem of copying files and directories. I was told that Samsung includes busybox, but it and others use the standard toolbox utility (so does the emulator), but that utility does not include the cp command. It is simple to copy files in Linux (android) without the cp command for rooted or non rooted devices. Copying directories is much more complicated though.

I have existing routines in both C and Pascal to do recursive copying, but it is not a simple set of commands that I can add in a few minutes. This adds considerable size to the library, but is the cleanest way. I have fixed the single file copy routine for the next release, but the recursive copy will have to wait for a while.

--- Jem

Has this library been updated to allow the following on Samsung devices?

cpr (Src As String, Dest As String) As Boolean
Recursive copy just like the Linux cp -r
Copies all files and directories under the Src path to Dest.
Works with directories, but is meaningless for files.
Returns True on success.
Uses Root if available.
rmrf (Fname As String) As Boolean
Remove (delete) a directory recursively.
ALL files and sub-directories will be deleted, EMPTY OR NOT.
Returns True on success.
Uses Root if available.

Thanks,

John

HotShoe · Apr 27, 2015

johndb said:
Has this library been updated to allow the following on Samsung devices?

Yes it has.

--- Jem

koaunglay · Jul 16, 2015

HotShoe said:
A file handling library that includes support for rooted devices. MLfiles will use superuser as well as busybox or toolbox if they are installed. The correct system paths are automatically searched for available superuser packages.

Attached is my file handling library for access to the Android file system. It includes a more complete Samba implementation for remote file access to windows or other samba servers. Below is a list of methods and variables available in the library. There is a simple example app in the zip to demonstrate some of the functions. works on rooted or non rooted devices.

MLfiles is now Version 1.50. MLsmb is now Version 1.51. See the attachments at the end of this post.

From version 1.50 MLfiles and MLsmb are separate libraries. If you are using both in your project, you'll need to check both libraries in the IDE. The jcifs samba library routines add over 300k to the size of an app. By separating the 2 libraries you get to choose when or if to use the samba library (MLsmb) or not.

MLfiles
Author: Jem Miller - Missing Link Software
Version: 1.5

MLfiles
Fields:

ErrStr As String
The StdErr interface used by most commands. This should
contain any error message from the OS.

FSerror As String
The value of stderror is set to this string after each call
if it is empty, there was no error.

HaveBB As Boolean
True if busybox is installed.

HaveRoot As Boolean
True if GetRoot succeeds.

HaveTB As Boolean
True if toolbox is installed.

OutStr As String
The StdOut interface returned by some commands. This
will contain what would normally be text output to a linux
terminal.

fsStdOut As String
Contains the Linux StdOut result of a command. This is
what you would see in a Linux console if the command
is successful.

Methods:

Escape (fname As String) As String
Escapes spaces, "(" and ")" characters in a filename
returns the original string if already escaped.

Exists (Filename As String) As Boolean
Checks to see if a file exists.
Filename is the path and filename string
Returns True on success

GetDiskstats (Path As String) As String
Returns information of the given partition or pathname as a string formatted as
Size Used Free Blocksize
each field is separated with a single space.
For example:

B4X:

Dim fs as MLFiles Dim tmp as String tmp = fs.GetDiskstats("/mnt/sdcard")

In the example above, tmp Might return :
8G 57M 8G 4096
If busybox is present, the output will be in bytes for each field.
Uses Root if available.

GetExtSd As String
Returns the location of the external SD card mount point.
This is a best guess based upon the standards being adopted in later releases of Android.
Returns an empty string if not found.

GetFileDate (Fname As String) As Long
Gets the last modified date and time of a file or directory.
Returns the timestamp in milliseconds.

GetFileExt (FName As String) As String
Returns the file extension (if available) of the file FName
otherwise returns the entire path and filename sent

GetFileType (Fname As String) As String
Gets the filetype of Fname.
Returns file type as a String on success or Unknown on failure.
Returns standard mime types such as:

text/plain
audio/mpeg
text/XML
image/jpeg

as file types

GetFreespace (Path As String) As Long
Returns the available space of the given partition/disk as a Long
Path is the mount point or directory within a partition
Note that some partitions are protected and will not return a value.

GetGigsFree (Path As String) As Double
Returns the available space of the given partition/disk in gigabytes
Path is the partition path or directory within a partition
Returns the available space on the partition containing the Path in gigabytes.
Note that some partitions are protected and will not return a value.

GetPerms (fname As String) As String
Example:
perms = GetPerms(filename)
Returns a Linux style permission string "rwxrwxrwx" rwx for each of owner, group, and others.
Use - for no permission, like "rw-r--r--" for owner read write, group read, and others read.
Works with files or directories.

GetRoot
Attempts to gain root access.
Sets HaveRoot to True on success

GetSymlink (Fname As String) As String
Gets the target of a symbolic link in string format.

IsReadable (Fname As String) As Boolean
Returns True if file or directory is readable to this user process.

IsWritable (Fname As String) As Boolean
Returns True if file or directory is writable to this user process.

ReadTxtFile (Fname As String) As String
Reads a text file and returns its contents in a StringBuilder.
Uses Root if available.

RootCmd (Command As String, Args As String, StdOut As StringBuilder, StdErr As StringBuilder, useBB As Boolean) As Boolean
Executes a system command or program through the root adapter.
Uses standard permissions if root is not available.
Command - the command to execute
Args - the arguments to the command
StdOut - the text that would appear in a linux console
StdErr - any error text returned by the command
useBB - use busybox for the command if available
Returns true on success.

Sdcard As String
Returns the path to the external SD card if present as a string including the ending /
like /mnt/sdcard/
returns an empty string if not present

SdcardReady As String
Returns a state string for the external sdcard.

mounted = mounted and ready
unmounted = card present but unmounted
bad removal = sdcard removed without closing
removed = no card present
nofs = unformatted or unknown filesystem
shared = mount point is currently shared with usb device
unmountable = sdcard is present but damaged
checking = media is being scanned
mounted read only = sdcard is not writable

SetFileDate (Fname As String, Time As Long) As Boolean
Sets file date and time on Fname to Time in milliseconds.
Returns True on success.

Symlink (Linkname As String, Filename As String) As Boolean
Creates the symbolic link Linkname from Filename as in Linux/Unix.
Works on files or directories.
Returns True on success.

Uses Root if available.

Touch (Fname As String) As Boolean
Creates an empty file with the current date and time.
Fname is the name of the file to create. If the file exists the datestamp is changed to NOW.
Returns True on success.
Uses root if available.

WriteTxtFile (Fname As String, Txt As String) As Boolean
Writes the contents of Txt to the file Fname.
Fname must already exist or a FileNotFound exception is thrown.
Uses root if available.

chmod (Filename As String, permissions As String) As Boolean
Sets file permissions for a file or directory. Requires correct user access or root.
Permissions are as Linux chmod numeric value.
1 = execute
2 = write
4 = read

644 = owner read/write (4 + 2), group read, other read
755 = owner read/write/execute (4 + 2 + 1), group read/execute, other read,execute

Uses Root if available.

cp (Src As String, Dest As String) As Boolean
Copy a file from Src to Dest
Returns True on success.
Uses Root if available.

cpr (Src As String, Dest As String) As Boolean
Recursive copy just like the Linux cp -r
Copies all files and directories under the Src path to Dest.
Works with directories, but is meaningless for files.
Returns True on success.
Uses Root if available.

createZipFile (path As String)
Creates a backup zip of the directory path

dirEntries (Dir As String, Hidden As Boolean) As ArrayList
Returns a list of formatted directory entries or an empty list on failure. As in :
d---rwxr-x system sdcard_rw 0 2011-11-13 12:59 LOST.DIR
Each element is in the form of a space separated string of
permissions and type (drwxr-xr-x) where the first char indicates a directory, link, or regular file (d, l, or -).
owner name
group name
file size
date
time
file name
Hidden is a boolean and will show ALL files hidden or not if True.
Note that this method makes every attempt to fill in a size for symlinks and directories
This means that you should always get 7 fields.
Uses Root if available.

extractZipFiles (zip_file As String, directory As String)
Unzips a backup zipfile to directory.
Creates the destination DIR if needed.

extractZipFilesFromDir (zipName As String, fromDir As String, toDir As String)
Unzips zipName from fromDir to toDir

isDir (Path As String) As Boolean
Returns true if Path is a directory

isSymlink (Fname As String) As Boolean
Returns True if file or directory is a symbolic link.

mkdir (Dir As String) As Boolean
Make a directory and any needed parent directories
Returns True on success
Uses Root if available.

mv (Oldname As String, Newname As String) As Boolean
Use to move or rename files or directories from Oldname to Newname.
Returns True on success.
Uses Root if available.

rm (Fname As String) As Boolean
Remove (delete) a file or directory
Directories must be empty
Returns True on success.
Uses Root if available.

rmrf (Fname As String) As Boolean
Remove (delete) a directory recursively.
ALL files and sub-directories will be deleted, EMPTY OR NOT.
Returns True on success.
Uses Root if available.

zipPeek (zipname As String) As ArrayList
Opens a zip file and returns the list of its contents
in a list.
zipname is the full path and filename to be displayed
Returns a formatted string of :
path/Name, compressed FileSize, and DateTime as a single semicolon separated string

Permissions:

android.permission.WRITE_EXTERNAL_STORAGE

The MLsmb library:

MLsmb
Author: Jem Miller - Missing Link Software
Version: 1.51

MLsmb
Events:

Success (Name as String As , Size as Long As )

Fields:

FSerror As String

Methods:

Escape (fname As String) As String
Escapes spaces, "(" and ")" characters in a filename
Returns the original string if already escaped.

Initialize
Initializes internal variables

SmbCopy (FromFile As String, ToFile As String, eventname As String)
Copies a file TO or FROM the Samba server, including samba to samba copying.
Calls the Success event when completed.

The event contains the filename and file size as:

varname_Success(Name as String, Size as Long)

put any code you need to execute on successful copy in the event sub.
eventname_Success(Name As String, Size As Long)

SmbCredentials (Username As String, Password As String, Domain As String)
Set the user name, password, and domain for a samba server.
If set, this record will be passed to the server when the Smb methods are called.

SmbDelete (Url As String, SmbFile As String) As Boolean
Deletes a file on the Samba server
Returns True on success.

SmbIP (host As String) As String
Returns the IP address of the Samba server

SmbList (SmbUrl As String, Pattern As String) As ArrayList
Returns a list of SmbFile types on the samba server.
Check the FSerror string to see if authentication failed or is needed.
SmbUrl = the SMB path to list
Pattern = an optional wildcard search pattern

SmbMove (From As String, To As String) As Boolean
Moves or renames files or directories on the Samba server
Returns True on success.

mkSmbDirs (Dir As String) As Boolean
Makes a directory on the Samba server.
This method will create any missing elements of the new path.
Returns True on success.

smbInStream (Afile As String) As InputStream
Creates an input stream from the file Afile that can be fed to another object.
Returns null if not successful.

Permissions:

android.permission.INTERNET

android.permission.WRITE_EXTERNAL_STORAGE

SambaFile
Fields:

TYPE_COMM As Int

TYPE_FILESYSTEM As Int

TYPE_NAMED_PIPE As Int

TYPE_PRINTER As Int

TYPE_SERVER As Int

TYPE_SHARE As Int

TYPE_WORKGROUP As Int

Methods:

CanRead As Boolean
True is the file or directory is readable.

CanWrite As Boolean
True if the directory or file can be written to.

DiskFree As Long
Returns the free space of this Samba share.

GetPath As String
Returns the SMB path to this file or directory

GetServer As String
Returns the Smaba server name

GetShare As String
Returns the share name

GetType As Int
Returns an Int representing the type of SMB object for this SambaFile from 0 through 6
TYPE_FILESYSTEM, a regular file or directory
TYPE_WORKGROUP, A workgroup
TYPE_SERVER, a Samba server
TYPE_SHARE, a shared directory
TYPE_PRINTER, a shared printer
TYPE_NAMED_PIPE, a named pipe
TYPE_COMM, a communications device

IsFile As Boolean
True if this is a file and not a directory.

IsHidden As Boolean
True if this file or directory is hidden.

IsInitialized As Boolean

LastModified As Long
Returns the modify date of this file

Name As String
Returns the file name

Parent As String
Returns the parent directory

ServerIp (Server As String) As String
Returns the IP address of the server

Size As Long
Returns the file size

isDir As Boolean
Ckecks if this file is a directory.

The jcifs.jar file used in this library is available HERE

There are 2 test projects included in the zip file. One for MLfiles and one for MLsmb.

Version 1.1

Many small changes have been made for efficiency. The GetRoot has been modified to try different methods of determining if a device has root access available. I added the Escape method in both the files and Samba objects to escape file names containing spaces, "(" and ")" characters. It returns the original string with no changes if nothing needs to be done, otherwise it escapes those characters with the "\" character so that linux and cifs can use the string.

Version 1.2
Added 2 new methods and changed 1.

Added GetGigsFree(String Path) This returns the freespace of a partition in gigabytes as a double

Added GetFreespace(String Path) This returns the freespace of a partition in bytes as a Long

Changed GetDiskFree(String Path) to GetDiskstats(String Path) It still returns a formatted STRING of values.

Updated the libtest.b4a project.

Version 1.3
Removed unused parameter from GetFreespace to avoid any confusion.

Version 1.4
Changed OS calls to look for busybox by default. Samsung and others do not offer common OS calls in their ROMs, but (at least in Samsungs case) they include busybox on the device, which solves this problem.

Version 1.41
Changed the cp and cpr methods. If the cp command is not present on the OS version, both use native methods to copy the file or do a recursive copy of the directory tree. These methods do not honor root access, so normal permissions are used.

Version 1.42
Minor change to the GetGigsFree and GetFreespace methods to try to ensure they return accurate results.

Version 1.43
Actually made version 1.42 changes work. About time!

Version 1.44
Added the Exists method to test if a file or directory exists.

Version 1.45
Fixes some zip extraction weirdness. NOTE: The order of fromDir and toDir have been changed! Also the destination directory will now be created if needed in both ExtractFilesFromDir() and ExtractFiles.

Version 1.47
Added GetExtSd method to find a mounted external (add-on_ sd card. Lots or rewrites and optimizations. The Samba routines are mostly rewritten and are now very reliable. Better authentication in all samba methods as well. More error correction and detection.

Version 1.50
Separated the local files and smb files into 2 libraries.

MLsmb Version 1.51
Corrected headers that got changed during the library separation process. Attached MLsmb-1.51.zip to correct this issue.

.

Please help my error!

B4X:

** Activity (main) Create, isFirst = true **
java.lang.IllegalArgumentException: Invalid path:             900.0M   590.4M   309.6M   4096
    at android.os.StatFs.doStat(StatFs.java:46)
    at android.os.StatFs.<init>(StatFs.java:39)
    at MLfiles.Fileslib.MLfiles.GetGigsFree(MLfiles.java:623)
    at org.mlsoft.test.main._test(main.java:418)
    at org.mlsoft.test.main._activity_create(main.java:325)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:187)
    at org.mlsoft.test.main.afterFirstLayout(main.java:100)
    at org.mlsoft.test.main.access$100(main.java:17)
    at org.mlsoft.test.main$WaitForLayout.run(main.java:78)
    at android.os.Handler.handleCallback(Handler.java:730)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5457)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: libcore.io.ErrnoException: statfs failed: ENOENT (No such file or directory)
    at libcore.io.Posix.statfs(Native Method)
    at libcore.io.ForwardingOs.statfs(ForwardingOs.java:131)
    at android.os.StatFs.doStat(StatFs.java:44)
    ... 19 more
java.lang.IllegalArgumentException: Invalid path:             900.0M   590.4M   309.6M   4096

koaunglay · Jul 16, 2015

I want to make my parth!

B4X:

        Dim dsize As Double
        sd = fs.GetDiskstats("/data/user/0")    '    com.netqin.ps/databases/nqrecords.db
            If sd <> "" Then
                Msgbox("You have an external mounted at:" &sd, "Information")
'                        folderS = sd
'                        If File.Exists(folderS, "") = False Then
'                            ToastMessageShow("Not found!!!!!!", False)
'                            Return
'                        End If
'
            Else
                Msgbox("Not found anthing!!", "Information")
            End If
                   
       
        tmp1 = fs.SdcardReady
       
        If tmp1 <> "mounted" Then
            Msgbox("No usable found!", "Error")
            Activity.Finish
        End If
            dsize = Round2(fs.GetGigsFree(sd), 2)
           
            Msgbox("You have " & dsize & " available on sdcard", "Information")
           
        sd = fs.Sdcard
        tmp = sd & "MLtest/"
       
        ok = fs.mkdir(tmp)       
        ok = fs.Touch(tmp& "Test")
            If ok Then
                ok = fs.cp(tmp & "Test", tmp & "reText")
            End If
           
        fs.mkdir("/data/user/0/tst")
        ok = fs.cpr(tmp, "/data/user/0/tst")
       
        fs.GetRoot
        ok = fs.HaveRoot
        tmp1 = fs.fsStdOut
        If ok Then
            Msgbox("OK! Found Root Access!", "Info")
        Else
            Msgbox("No Root Access.", "Info")
        End If
'=====================

   
    filelis = fs.dirEntries(tmp)    '    fs.dirEntries(sd)    ' File.ListFiles(folderS)
    For i = 0 To filelis.Size -1
        DoEvents
'        Dim userInterfaceFile As String
'        userInterfaceFile = filelis.Get(i)
        lV.AddSingleLine(filelis.Get(i))
    Next

But I can't go on. There is some error in your sample zip for me. My English is not good. I mean..https://www.b4x.com/android/forum/threads/file-handling-library.19247/page-6#post-354002

koaunglay · Jul 16, 2015

When I update MLfile v1.50 I get this error!

B4X:

** Activity (main) Create, isFirst = true **
java.lang.IllegalArgumentException: Invalid path: Filesystem               Size     Used     Free   Blksize
/mnt/sdcard            900.0M   590.4M   309.6M   4096
    at android.os.StatFs.doStat(StatFs.java:46)
    at android.os.StatFs.<init>(StatFs.java:39)
    at MLfiles.Fileslib.MLfiles.GetGigsFree(MLfiles.java:630)
    at org.mlsoft.test.main._test(main.java:418)
    at org.mlsoft.test.main._activity_create(main.java:325)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:187)
    at org.mlsoft.test.main.afterFirstLayout(main.java:100)
    at org.mlsoft.test.main.access$100(main.java:17)
    at org.mlsoft.test.main$WaitForLayout.run(main.java:78)
    at android.os.Handler.handleCallback(Handler.java:730)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5457)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691)
    at dalvik.system.NativeStart.main(Native Method)
Caused by: libcore.io.ErrnoException: statfs failed: ENOENT (No such file or directory)
    at libcore.io.Posix.statfs(Native Method)
    at libcore.io.ForwardingOs.statfs(ForwardingOs.java:131)
    at android.os.StatFs.doStat(StatFs.java:44)
    ... 19 more
java.lang.IllegalArgumentException: Invalid path: Filesystem               Size     Used     Free   Blksize
/mnt/sdcard            900.0M   590.4M   309.6M   4096

HotShoe · Jul 16, 2015

koaunglay said:

B4X:

sd = fs.GetDiskstats("/data/user/0")    '    com.netqin.ps/databases/nqrecords.db
            If sd <> "" Then
                Msgbox("You have an external mounted at:" &sd, "Information")
'                        folderS = sd
'                        If File.Exists(folderS, "") = False Then
'                            ToastMessageShow("Not found!!!!!!", False)
'                            Return
'                        End If
'
            Else
                Msgbox("Not found anthing!!", "Information")
            End If

From the error message it looks like you are running the code above while those lines are not commented out. In this case sd will be the return string from the getDiskStats call and cannot be used as an argument for the call to File.Exists (not a valid path). In the error, that string would equal:
Filesystem Size Used Free Blksize
/mnt/sdcard 900.0M 590.4M 309.6M 4096

Also be aware that /data is a protected path in android, so unless the device is rooted, you won't be able to read files or create a directory in that path.

--- Jem

koaunglay · Jul 17, 2015

HotShoe said:
From the error message it looks like you are running the code above while those lines are not commented out. In this case sd will be the return string from the getDiskStats call and cannot be used as an argument for the call to File.Exists (not a valid path). In the error, that string would equal:
Filesystem Size Used Free Blksize
/mnt/sdcard 900.0M 590.4M 309.6M 4096

Also be aware that /data is a protected path in android, so unless the device is rooted, you won't be able to read files or create a directory in that path.

--- Jem

Thanks for your reply! I get the same error when I run your sample file /mnt/sdcard

koaunglay · Jul 17, 2015

HotShoe said:
From the error message it looks like you are running the code above while those lines are not commented out. In this case sd will be the return string from the getDiskStats call and cannot be used as an argument for the call to File.Exists (not a valid path). In the error, that string would equal:
Filesystem Size Used Free Blksize
/mnt/sdcard 900.0M 590.4M 309.6M 4096

Also be aware that /data is a protected path in android, so unless the device is rooted, you won't be able to read files or create a directory in that path.

--- Jem

Thanks! The error from in log is running your sample file.

HotShoe · Jul 20, 2015

Actually, your sample above calls GetDiskStats as its first call, where the sample does not. It should look like this:

B4X:

Sub  test
   Dim dt As Long
   Dim ok As Boolean
   Dim l As List
   Dim arr, sd As String
   Dim i As Int
   Dim dsize As Double
   
   sd = fs.GetExtSd 'see if there is an external sdcard (internal cards are partitioned to make part look like an external card)
   
   If sd <> "" Then
   Msgbox("You have an external SD card mounted at: "&sd,"Information")
   Else
   Msgbox("I found no external SD card mounted","Information")
   End If
   
   tmp1 = fs.SdcardReady ' check the status of the card
   
   If tmp1 <> "mounted" Then  ' see if the card is usable
   Msgbox("No usable external sdcard found!","Error")
   Activity.Finish
   End If
   
   dsize = Round2(fs.getgigsfree(sd),2)
   
   Msgbox("You have " & dsize & " gigabytes available on your SD card","Information")
   
   sd = fs.Sdcard
   
   tmp = sd & "MLtest/" 'sdcard returns the path with a trailing /
   
   'Zip extraction test. Create and add a test.zip to your files to use this
'   File.Copy(File.DirAssets,"test.zip",sd,"test.zip")
'   
'   tmp1 = sd&"zipdir"
'   fs.extractZipFilesFromDir("test.zip", sd, tmp1)
   
   ok = fs.mkdir(tmp) ' make a new directory
   
   ok = fs.touch(tmp & "Test") 'create an empty file (or change the file access time/date to NOW if it exists)
   
   If ok Then
   ok = fs.cp(tmp & "Test", tmp & "reTest") ' copy the file
   End If
   
   fs.mkdir("/mnt/sdcard/tst") 'make a dir
   
   ok = fs.cpr(tmp,"/mnt/sdcard/tst") 'copy all files to the new dir
   
   fs.GetRoot ' see if we have root access
   ok = fs.HaveRoot
   
   tmp1 = fs.fsStdOut

   If ok Then
   Msgbox("I have Root access!","Information")
   Else
   Msgbox("I do not have Root access.","Information")
   End If
   
   l = fs.dirEntries(tmp, True) ' get file list of the new directory
   
   For i = 0 To l.Size - 1
   ListView1.AddSingleLine(l.Get(i))
   Next
   
   DoEvents
   
   l.Clear
   
   l = sf.SmbList("smb://",Null) 'get a list of all samba groups
   
   For i = 0 To l.Size - 1
   ListView2.AddSingleLine(l.Get(i))
   Next
   
   DoEvents
   
   tmp1 = fs.Escape("c:\Program Files (x86)") 'test the escape method (available in samba as well)
   Log(tmp1)
   
End Sub

--- Jem

koaunglay · Jul 20, 2015

HotShoe said:

Actuy, your sample above calls GetDiskStats as its first call, where the sample does not. It should look like this:

B4X:

Sub  test
   Dim dt As Long
   Dim ok As Boolean
   Dim l As List
   Dim arr, sd As String
   Dim i As Int
   Dim dsize As Double
  
   sd = fs.GetExtSd 'see if there is an external sdcard (internal cards are partitioned to make part look like an external card)
  
   If sd <> "" Then
   Msgbox("You have an external SD card mounted at: "&sd,"Information")
   Else
   Msgbox("I found no external SD card mounted","Information")
   End If
  
   tmp1 = fs.SdcardReady ' check the status of the card
  
   If tmp1 <> "mounted" Then  ' see if the card is usable
   Msgbox("No usable external sdcard found!","Error")
   Activity.Finish
   End If
  
   dsize = Round2(fs.getgigsfree(sd),2)
  
   Msgbox("You have " & dsize & " gigabytes available on your SD card","Information")
  
   sd = fs.Sdcard
  
   tmp = sd & "MLtest/" 'sdcard returns the path with a trailing /
  
   'Zip extraction test. Create and add a test.zip to your files to use this
'   File.Copy(File.DirAssets,"test.zip",sd,"test.zip")
'  
'   tmp1 = sd&"zipdir"
'   fs.extractZipFilesFromDir("test.zip", sd, tmp1)
  
   ok = fs.mkdir(tmp) ' make a new directory
  
   ok = fs.touch(tmp & "Test") 'create an empty file (or change the file access time/date to NOW if it exists)
  
   If ok Then
   ok = fs.cp(tmp & "Test", tmp & "reTest") ' copy the file
   End If
  
   fs.mkdir("/mnt/sdcard/tst") 'make a dir
  
   ok = fs.cpr(tmp,"/mnt/sdcard/tst") 'copy all files to the new dir
  
   fs.GetRoot ' see if we have root access
   ok = fs.HaveRoot
  
   tmp1 = fs.fsStdOut

   If ok Then
   Msgbox("I have Root access!","Information")
   Else
   Msgbox("I do not have Root access.","Information")
   End If
  
   l = fs.dirEntries(tmp, True) ' get file list of the new directory
  
   For i = 0 To l.Size - 1
   ListView1.AddSingleLine(l.Get(i))
   Next
  
   DoEvents
  
   l.Clear
  
   l = sf.SmbList("smb://",Null) 'get a list of all samba groups
  
   For i = 0 To l.Size - 1
   ListView2.AddSingleLine(l.Get(i))
   Next
  
   DoEvents
  
   tmp1 = fs.Escape("c:\Program Files (x86)") 'test the escape method (available in samba as well)
   Log(tmp1)
  
End Sub

--- Jem

Is this code from your sample? Thanks. Let me try again.

B4A Library File handling library

Attachments

Well-Known Member

Well-Known Member

Active Member

Active Member

Well-Known Member

Active Member

Well-Known Member

Expert

Well-Known Member

Active Member

Well-Known Member

Member

Member

Member

Well-Known Member

Member

Member

Well-Known Member

Member

Similar Threads