uiputfile dont work anymore

Hello Matlab Community I have following problem, I wrote a little app and now i want to save some .wav files and the user choose the directory. I choosed uiputfile for this problem, and it worked perfect the first 20 test runs. I have a bunch of audiofiles created by uiputfile, but now it doesent creates anything. The weird thing is, the backup cloud, does a backup, after saving, but there is no data.... please help, there is no error message, no problem, no bug.... I dont know what to do!

if true
%% Button pushed function: applyButton
function applyButtonPushed(app, event) 
toggleValue = app.toggleSwitch.Value; %% gets toggle switch value  %% part of the code 
            
    if ( strcmpi(toggleValue,'Fuzz') )                         %%checks value, string comparing 

                    if(app.valc==4)
                        app.in_fuzz=app.audio_norm_custom;                  %%get user normalized audio
                        app.audioout=fuzz(app,app.in_fuzz);
                    elseif (app.valc==3)
                        app.in_fuzz=app.audio_norm;                             %%get first input normalized audio
                        app.audioout=fuzz(app,app.in_fuzz);                     %%create fuzz sound 
                    end 

                audiowrite((uiputfile('fuzz_out.wav')),app.audioout,app.Fs); %%create . wav audiofile and save it 
                [app.in_fuzz,app.fuzz_path]=uigetfile('.wav');          %%get audio back
                app.UIFigure.Visible='off';                             %%keep app displayed 
                app.UIFigure.Visible='on';
                app.straudiopth=fullfile(app.fuzz_path,app.in_fuzz);    %%create string
                app.audioout2_fuzz=audioread(app.straudiopth);          %%read audio
                app.audioout3=audioplayer(app.audioout2_fuzz,app.Fs);
                app.valc=1;                                             %%control var for play/stop

                app.audioin=audioplayer(app.audio_norm,app.Fs);         %%load audio in player

                app.dt_plot_out = 1/app.Fs;                             %%create plot values/datas
                app.t_plot_out= 0:app.dt_plot_out:(length(app.audioout2_fuzz)*app.dt_plot_out)-app.dt_plot_out;
                plot(app.plot_out,app.t_plot_out,app.audioout);         %%plot audio
                title(app.plot_out,'Fuzz')

                elseif ( strcmpi(toggleValue,'Overdrive') )             %%same process for overdrive as described for fuzz 

                    if(app.valc==4)
                             app.in_ovd=app.audio_norm_custom;
                             app.audioout_ovd=overdrive(app,app.in_ovd,app.Fs);
                    elseif(app.valc==3)
                             app.in_ovd=app.audio_norm;
                             app.audioout_ovd=overdrive(app,app.in_ovd,app.Fs);
                    end
                audiowrite((uiputfile('o_out.wav')),app.audioout_ovd,app.Fs)    ;
                [app.in_ovd,app.ovd_path]=uigetfile('.wav');
                app.UIFigure.Visible='off';
                app.UIFigure.Visible='on';
                app.straudiopth1=fullfile(app.ovd_path,app.in_ovd);
                app.audioout2_ovd=audioread(app.straudiopth1);
                app.audioout4=audioplayer(app.audioout2_ovd,app.Fs);
  app.valc=2;
 app.dt_plot_out = 1/app.Fs;
 app.t_plot_out= 0:app.dt_plot_out:(length(app.audioout2_ovd)*app.dt_plot_out)-app.dt_plot_out;
                plot(app.plot_out,app.t_plot_out,app.audioout_ovd);
                title(app.plot_out,'Overdrive')

            end
        end

    % code
  end

[Jan]

What exactly do you observe? "but now it doesent creates anything" is not clear enough. I do not understand thius also: "the backup cloud, does a backup, after saving, but there is no data".

Matlab's uiputfile fails, when the High Contrast mode of Windows is enabled. But this does not match your explanations.

Answer 1

[Darko Kulic]

1. uiputfile doesnt create the file what I want to create with the function. Read carefully. The sentence says: I have created a bunch of audiofiles with uiputfile and now it doesn't create anything. So thats the problem, it worked the first 20 test runs perfectly and then it stopped creating files. See also the posted code.
2. I have a backup cloud which always creates a new back up if i create a new file on my hdd(harddiskdrive.

But its fine if you cant help. I will find a solution.

I'm using mac os.

[Walter Roberson]

uiputfile() never creates files. It only permits the user to select file names. The code is then responsible for doing whatever it needs to in order to create the files according to the name the user selected.

[Jan]

@Darko Kulic: Please post comments in the section for comments, not as an answer.

[Walter Roberson]

You are passing the result of uiputfile() directly to audiowrite() . That can only work if the user happened to select a file name in the current directory. uiputfile does not return complete file names: just like uigetfile, it returns the last part of the name in the first output, and the directory in the second output. You should be sending the output of uiputfile() into two variables and putting them together with fullfile()

Answer 2

[Jan]

"it doesn't create anything" could mean, that you get an error message or that existing files are overwritten. Even if you repeat this and ask me to read it carefully again, you do not reveal what actually happens. You mention, that there are files copied to a backup. Does this mean that the files are created but empty?

As Walter has said already, uiputfile determines the file name and path only, so you cannot "create files" with it. I assume using the debugger will show you, what exactly happens. I guess, that your app.audioout_ovd is empty in the failing cases.

Your code contains:

if(app.valc==4)
     app.in_ovd=app.audio_norm_custom;
     app.audioout_ovd=overdrive(app,app.in_ovd,app.Fs);
elseif(app.valc==3)
     app.in_ovd=app.audio_norm;
     app.audioout_ovd=overdrive(app,app.in_ovd,app.Fs);
end

It is a safe programming style to define an else for all if's. What happens, if app.valc is neitehr 3 or 4?

By the way, what is the purpose of:

app.UIFigure.Visible='off';   %%keep app displayed 
app.UIFigure.Visible='on';