Question

For an iPhone Firemonkey application I am storing files (images) in the ‘tmp’ folder and using them in my application. I want to be able flush the cache by deleting say all of the ‘.jpg’ files on demand, but I cannot seem to programatically match them in a FindFirst() call.

I am using a simple FindFirst() / FindNext() / FindClose() loop to list (and delete) the contents of a folder.

Under windows the code works perfectly. The same application under iOS (iPhone) is always returning a value of -1 (error) for the FindFirst() call, and SearchRec.Name is blank. I have tried using various file patterns including ‘.‘ with no success.

I know the files exist because I can read and write to them (under both iOS and windows) without error, and their contents is correct. A FileExists() check also returns True.

Also, if I specify a file pattern with no wildcard, to check for a known file (which really isn’t the point of a FindFirst() call), the call never returns (again this is fine under windows)!

Has anyone had any success with this under iOS and can offer any thoughts?

Thanks,

EDIT: Code snippet as requested which demonstrates the problem.
Note: _sFolderName contains the cache folder name which I have confirmed is definitely correct.

function GetCacheFileList : string;
var
  iResult: integer;
  sr: TSearchRec;
  sPath,
  sTemp: string;
  sFilename : TFilename;
begin
  sTemp     := '';
  sFilename := _sFolderName + '*.jpg';
  //
  iResult := FindFirst(sFilename, faAnyFile, sr);  // ALWAYS RETURNS -1 under iOS
  while (iResult = 0) do
  begin
    sTemp := sTemp + sr.Name + sLineBreak;
    iResult := FindNext(sr)
  end; { while }
  //
  FindClose(sr);
  Result := sTemp
end;

Answer 1

This has been fixed under XE2 update 3