MATLAB GUI: I want to display an error message if user selects the wrong file type
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MATLAB GUI HELP:
I have an option for users to open wav files (using uigetfile). However, this doesn't stop them opening all file types and when they do this it breaks my GUI.
How can I get an error message to occur when they don't open a wav file?
Many thanks. I really appreciate your help.
Best regards
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Image Analyst
2013 年 11 月 23 日
Try this fairly robust code:
numberOfTries = 0;
while numberOfTries < 20 % Failsafe
% Get the name of the file that the user wants to use.
startingFolder = pwd; % Whatever you want.
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');
if baseFileName == 0
% User clicked the Cancel button.
break;
end
fullFileName = fullfile(folder, baseFileName)
[folder, baseFileName, extension] = fileparts(fullFileName)
if strcmpi(extension, '.wav')
break; % out of while loop
else
message = sprintf('Error: you must pick a wav file, not a "%s" file.', extension);
uiwait(warndlg(message));
end
end
2 件のコメント
Image Analyst
2013 年 11 月 24 日
You could also try to force them to pick a wave file by only showing them:
defaultFileName = fullfile(startingFolder, '*.wav');
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