Android Question Can't read or write from DirAssets

[Alansari]

Hi Freinds

After i updated SDK to platform 28 the App can't access DirAssets files

pdfname = "vb2010.pdf"
    File.Copy(File.DirAssets,pdfname,File.DirDefaultExternal,pdfname)
    pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,pdfname),1,True,True)

What is the solution ?

look the images if there any problems

 

[DonManfred]

DirAssets is readonly. You can not write here.

where is the code which raises the error?

 

[Alansari]

DirAssets is readonly. You can not write here.

where is the code which raises the error?

pdfname = "vb2010.pdf"
    File.Copy(File.DirAssets,pdfname,File.DirDefaultExternal,pdfname)
    pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,pdfname),1,True,True)

whan i start the app can't read the files from DirAssets

 

[DonManfred]

looks like the file is not there.
Is it listed in the files tab in the IDE?

 

[Alansari]

pdfname = "vb2010.pdf"
    File.Copy(File.DirAssets,pdfname,File.DirDefaultExternal,pdfname)
    pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,pdfname),1,True,True)

whan i start the app can't read the files from DirAssets

looks like the file is not there.
Is it listed in the files tab in the IDE?

 

[Erel]

Please don't post all these screenshots. Post code and errors as text.

You should never use File.DirDefaultExternal. Watch the runtime permissions video tutorial.

 

[Mahares]

What is the solution ?

You should use runtime permissions and your code should include something like this:

Dim rp As RuntimePermissions   'need runtime permissions library. This line should preferably in Starter service
    File.Copy(File.DirAssets,pdfname,rp.GetSafeDirDefaultExternal(""),pdfname)

Also: Your target SDK in your manifest should be: 26 not 28

Maybe you have used capital letters in your actual file name?

It does not matter anymore. The file names are internally converted to lower case. So, it is not a problem if the asset files are in uppercase.

 

[Alansari]

You should use runtime permissions and your code should include something like this:

Dim rp As RuntimePermissions   'need runtime permissions library. This line should preferably in Starter service
    File.Copy(File.DirAssets,pdfname,rp.GetSafeDirDefaultExternal(""),pdfname)

Also: Your target SDK in your manifest should be: 26 not 28


It does not matter anymore. The file names are internally converted to lower case. So, it is not a problem if the asset files are in uppercase.

I will test this

Thanks for replay . I will test this code
can you give me this Library :runtime permissions library ?

 

[DonManfred]

the forum search is working. Just search for it

 

[Alansari]

the forum search is working. Just search for it

Thanks

 

[Alansari]

I did not know to do that

if this file in DirAssets : index.txt
how to access it ?

please write to me the full code

 

[Computersmith64]

I did not know to do that

if this file in DirAssets : index.txt
how to access it ?

please write to me the full code

The runtime permissions tutorial (https://www.b4x.com/android/forum/threads/runtime-permissions-android-6-0-permissions.67689/#content) provides all the information you need to be able to write the code yourself. If there are other things that aren't clear to you, then search the forum for the specific issue you are having & if you still can't figure it out then ask - but don't expect other forum members to write the code for you. You won't learn anything if you just copy & past code that others have written.

- Colin.

 

[Alansari]

The runtime permissions tutorial (https://www.b4x.com/android/forum/threads/runtime-permissions-android-6-0-permissions.67689/#content) provides all the information you need to be able to write the code yourself. If there are other things that aren't clear to you, then search the forum for the specific issue you are having & if you still can't figure it out then ask - but don't expect other forum members to write the code for you. You won't learn anything if you just copy & past code that others have written.

- Colin.

Thanks a lot

I did not find link of library download

 

[Computersmith64]

Thanks a lot

I did not find link of library download

Which library? Runtime Permissions? I think it's a core library, so look for it in the Libraries tab in the B4A IDE.

- Colin.

 

[Alansari]

Which library? Runtime Permissions? I think it's a core library, so look for it in the Libraries tab in the B4A IDE.

View attachment 75297

- Colin.

Thanks. i find it ^_^

 

[Alansari]

Whats wrong ???

 

[IdasI4A]

Test with

    If File.Exists(rp.GetSafeDirDefaultExternal(""),"fav.db") =  False Then
       File.Copy(File.DirAssets,"fav.db",rp.GetSafeDirDefaultExternal(""),"fav.db")
   End If

or better yet

    dim Carpeta as String

    Carpeta=rp.GetSafeDirDefaultExternal("")
    If File.Exists(Carpeta,"fav.db") =  False Then
       File.Copy(File.DirAssets,"fav.db",Carpeta,"fav.db")
   End If

 

[Alansari]

Test with

    If File.Exists(rp.GetSafeDirDefaultExternal(""),"fav.db") =  False Then
       File.Copy(File.DirAssets,"fav.db",rp.GetSafeDirDefaultExternal(""),"fav.db")
   End If

or better yet

    dim Carpeta as String

    Carpeta=rp.GetSafeDirDefaultExternal("")
    If File.Exists(Carpeta,"fav.db") =  False Then
       File.Copy(File.DirAssets,"fav.db",Carpeta,"fav.db")
   End If

Waw Thats work

Thanks a lot ms.ldasl4A

look at this code .. not work
please edit it

File.Copy(File.DirAssets,aaa.pdf,File.DirDefaultExternal,aaa.pdf)
    pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,aaa.pdf),1,True,True)

 

[Alansari]

this code work :

If File.Exists(rp.GetSafeDirDefaultExternal(""),pdfname) =  False Then
        File.Copy(File.DirAssets,pdfname,rp.GetSafeDirDefaultExternal(""),pdfname)

but last line not work:

pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,pdfname),1,True,True)

How to correct ???

 

[Computersmith64]

this code work :
but last line not work:

pdf.Initialize("PDFView",File.Combine(File.DirDefaultExternal,pdfname),1,True,True)

How to correct ???

What is pdf? Post your declaration for the pdf object.

- Colin.