LAMW: TEnvDirectory paths
lazarus / 43-Android

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c4p · 2017-09-11 12:32

Unless I am doing something wrong, this is what I get using
jDownloadManager component with the TEnvDirectory paths.
I am using latest svn:

dirSdCard - DOES NOT WORK, goes to /Downloads
dirInternalAppStorage - DOES NOT WORK, goes to /Downloads
dirDatabase - DOES NOT WORK, goes to /Downloads
dirSharedPrefs -  DOES NOT WORK, goes to /Downloads

dirDownloads - Works! goes to /Downloads
dirDCIM - Works! goes to /DCIM
dirMusic - Works! goes to /Music
dirPictures - Works! goes to /Pictures
dirNotifications - Works! goes to /Notifications
dirMovies - Works! goes to /Movies
dirPodcasts - Works! goes to /Podcasts
dirRingtones - Works! goes to /Ringtones

P.S. jDownloadManager component works really well apart from the above
issues!

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jmpessoa · 2017-09-11 19:48

Hi c4p!

I will try fix this issues!

Thank you!

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c4p · 2017-09-11 20:08

Thank you! (again)

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c4p · 2017-09-17 08:58

Really keen to get this working ( specifically dirSharedPrefs ),
looking to send my app to the Play store soon.

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jmpessoa · 2017-09-19 19:54

Ok. Fixed "jDownloadManager.java"  template!

Please, test it!

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c4p · 2017-09-19 21:52

Getting this:
dirSdCard: /storage/emulated/0/storage/emulated/0
dirInternalAppStorage:
/storage/emulated/0/data/data/com.your.packagename/files
dirDatabase:
/storage/emulated/0/data/data/com.your.packagename/database
dirSharedPrefs:
/storage/emulated/0/data/data/com.your.packagename/shared_prefs

com.your.packagename is correct package name though!
I think /data/data/ should be /Android/data/ ?
I might have a go at fixing this myself 

Thank you jmpessoa (again!)

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jmpessoa · 2017-09-19 22:34

QuoteI think /data/data/ should be /Android/data/ ?

No.  "/data/data/" is Ok!

Question 1:

dirInternalAppStorage
dirDatabase
dirSharedPrefs

are internal app storages! 

So,  only your application can "read" and "write" them...

Question 2: Can jDownloadManager write there? [maybe not!]
So, we need redirect to "Downloads"

that is:

QuotedirInternalAppStorage - DOES NOT WORK, goes to /Downloads
dirDatabase - DOES NOT WORK, goes to /Downloads
dirSharedPrefs -  DOES NOT WORK, goes to /Downloads

We will need some tests!!!

[workaround]

After download your file, copy it to "SharedPrefs"

Code: [Select]  Self.CopyFile(Self.GetEnvironmentDirectoryPath(dirDown
loads)+'/myfile.txt',
                 
Self.GetEnvironmentDirectoryPath(dirSharedPrefs)+'/myfile.txt');

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c4p · 2017-09-20 05:43

Good point, I have a rooted phone.
I will try this later.

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jmpessoa · 2017-09-20 17:35

Here are the java "APIs" [DownloadManager.Request]

setDestinationInExternalPublicDir(Path, Filename);
setDestinationInExternalFilesDir(context, Filename , subPath)
setDestinationUri(uri)       

from docs:
QuoteSet the local destination for the downloaded file to a path
within the PUBLIC EXTERNAL storage directory

So, after your tests I will can rollback the [change] commited ....

And we will need go by  the "workaround" ...

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c4p · 2017-09-20 20:12

Not getting very good results, tried the new paths
/data/data/.../files but cannot delete file (I need this to be sure I
am using the correct file) using
self.deletefile(dirInternalAppStorage, filename) like you can with say
dirDownloads/dirNotifications.
Also tried creating new TEnvDirectory 'dirDocuments' (
/storage/emulated/0//Documents ) but cannot delete file there either.
I must be missing another routine with this.
Decided to stick with dirDownloads for now.

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jmpessoa · 2017-09-20 20:37

OK, I will can rollback the [change] commited ....

Thank you!

NOTE: LAMW do not support "document" folder... [need API >= 19]

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c4p · 2017-09-23 21:48

CopyFile will not copy to anywhere other than /Notifications, /Music
etc. but FileCopy function works great!
Will copy to /data/data/com.your.packagename/files

http://wiki.freepascal.org/File_Handling_In_Pascal#FileCopy