Android file structure explorer
lazarus / 43-Android

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iru · 2020-10-13 04:55

Gentlefolk,

Trying to develop a small application on LAMW with Laz. Test and debug
on a Nokia 4.2 (Android 10). Latest LAMW.

GUI is all Ok, buttons/views/etc getting sorted.

My problem is accessing a file in the Android environment.
From a couple of the demos I have tried
self.GetEnvironmentDirectoryPath, self.GetInternalAppStoragePath but
cannot read/write a file.

Then I have problems with checking the Android file structure, can
anyone:
  Recommend an android 'file explorer' which will give me an
unambigous 'text' listing of the file structure rather than the pretty
'icon' type which seem to display by category/etc.

  Direct me to a good working example of writing a file.

Any suggestions, help appreciated, Ian.

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DonAlfredo · 2020-10-13 06:12

You might need this:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i procedure
TAndroidModule1.AndroidModule1JNIPrompt(Sender: TObject);var 
manifestPermissions: TDynArrayOfString;begin 
//https://www.captechconsulting.com/blogs/runtime-permissions-best-
practices-and-how-to-gracefully-handle-permission-removal  //https://d
eveloper.android.com/guide/topics/security/permissions#normal-
dangerous  if  IsRuntimePermissionNeed() then   // that is, target API
>= 23  begin    if
IsRuntimePermissionGranted('android.permission.CAMERA') and       IsRu
ntimePermissionGranted('android.permission.WRITE_EXTERNAL_STORAGE')
then    begin      //ShowMessage('Good ... we have runtime permissions
!');    end    else    begin      ShowMessage('warning: Requesting
Runtime Permission.... please, wait..');     
SetLength(manifestPermissions, 2);       manifestPermissions[0]:=
'android.permission.CAMERA';  //from AndroodManifest.xml     
manifestPermissions[1]:= 'android.permission.WRITE_EXTERNAL_STORAGE';
//from AndroodManifest.xml      
Self.RequestRuntimePermission(manifestPermissions, 1101);      
SetLength(manifestPermissions, 0);    end;  end;end; procedure
TAndroidModule1.AndroidModule1RequestPermissionResult(  Sender:
TObject; requestCode: integer; manifestPermission: string; 
grantResult: TManifestPermissionResult);begin   case requestCode of  
 1101:begin            if manifestPermission =
'android.permission.CAMERA' then            begin                {   
           if grantResult = PERMISSION_GRANTED  then                 
ShowMessage('Success! ['+manifestPermission+'] Permission grant!!! '
)                else  //PERMISSION_DENIED                 
 ShowMessage('Sorry... ['+manifestPermission+'] DENIED... ' );       
       }            end;             if manifestPermission =
'android.permission.WRITE_EXTERNAL_STORAGE' then            begin    
          {                if grantResult = PERMISSION_GRANTED  then 
                ShowMessage('Success! ['+manifestPermission+']
Permission grant!!! ' )                else  //PERMISSION_DENIED     
            ShowMessage('Sorry... ['+manifestPermission+'] Permission
not grant... ' );                }            end;     end;  end;end;

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DonAlfredo · 2020-10-13 06:16

As a file browser on Android, I would like to recommend "Total
Commander".

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iru · 2020-10-13 19:41

Total commander is great, I can see the 'real' world.
 Getting there with file permissions....

Thanks, Ian.