How to use the same directory for all functions in app designer?

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I have created a GUI, in that when I add the data from a folder it will load .csv and text files. Now I wanted to add images(.png) lauanch with image viewer from the same directory in app designer.
(Here I have enclosed the example file. i.e It will ask for the select file from the directory after that it launches windows media player with the file.)
But for GUI, without using the 'baseFileName = uigetfile('*.png')' , Is it possible to select from the directory? by using 'uigetfile' it is again asking to select the folder.
for example : it should be like this baseFileName = '*.png'
  1 Comment
Jan on 24 Jun 2022
I do not understand, what you are asking for. Do you want to process all PNGs fils inside a specific folder?
Folder = 'D:\Yor\Folder';
FileList = dir(fullfile(Folder, '*.png'));
for k = 1:numel(FileList)
aFile = fullfile(FileList(k).folder, FileList(k).name);
% Now do what you need with this file

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Accepted Answer

Image Analyst
Image Analyst on 24 Jun 2022
This works on my computer:
Folder = 'E:\Movies';
% FileList = dir(fullfile(Folder, '*.mkv'));
FileList = dir(fullfile(Folder, '*.wmv'))
% Not sure WMP plays .mkv files???? Does it?
if isempty(FileList)
errorMessage = sprintf('Error: no video files found in\n%s.', Folder);
fprintf('%s\n', errorMessage)
fprintf('Found %d videos in "%s".\n', length(FileList), Folder);
% Play all videos one after the other.
for k = 1:numel(FileList)
fullFileName = fullfile(FileList(k).folder, FileList(k).name);
% First construct the command line for the system() function.
% Enclose all filenames in double quotes because we may have spaces in the filenames.
arguments = sprintf('"%s"', fullFileName);
commandLine = sprintf('"%s" %s', editorFullFileName, arguments);
fprintf('%s', commandLine);
promptMessage = sprintf('Do you want to play the next video,\nor Quit processing?');
titleBarCaption = 'Continue?';
buttonText = questdlg(promptMessage, titleBarCaption, 'Continue', 'Quit', 'Continue');
if contains(buttonText, 'Quit', 'IgnoreCase', true)
return; % or break or continue.
Lavanya on 4 Jul 2022
Edited: Lavanya on 5 Jul 2022
I have create two apps. 1.GUI
2. Listboxedit
From GUI button click, it will open a new window with the Listbox data( it will open 2nd app ListBox edit). Till now Its working good.
But I wanted to activate the app2. When I click moveup it should change the Listorder by moving upward button. In Editfield, it should show Listbox name. Finally I wanted to save all these details and it should update data in Main GUI.
I have enclosed the image and code should work like this
For your reference I have enclosed the ListBox edit. kindly suggest a way for this?

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More Answers (2)

Image Analyst
Image Analyst on 24 Jun 2022
Try this:
folder = pwd; % wherever you want
% Get a list of all .txt, .png, and .csv files:
fileList = [...
dir(fullfile(folder, '*.txt'));...
dir(fullfile(folder, '*.png'));...
dir(fullfile(folder, '*.csv'))]
% If you want all the names put one cell array:
allFileNames = fullfile({fileList.folder}, {})'
% Now files are listed in the order you called dir().
% If you want the list sorted alphabetically:
allFileNames = sort(allFileNames)

Kevin Holly
Kevin Holly on 24 Jun 2022
You could have the app load the directory files into a dropdown box after selecting a particular file as shown in the example attached.


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