matlab计算侦听器回调时出错,Matlab GUI中计算 UIControl Callback 时出错问题

function varargout = music(varargin)

% MUSIC MATLAB code for music.fig

%      MUSIC, by itself, creates a new MUSIC or raises the existing

%      singleton*.

%

%      H = MUSIC returns the handle to a new MUSIC or the handle to

%      the existing singleton*.

%

%      MUSIC('CALLBACK',hObject,eventData,handles,...) calls the local

%      function named CALLBACK in MUSIC.M with the given input arguments.

%

%      MUSIC('Property','Value',...) creates a new MUSIC or raises the

%      existing singleton*.  Starting from the left, property value pairs are

%      applied to the GUI before music_OpeningFcn gets called.  An

%      unrecognized property name or invalid value makes property application

%      stop.  All inputs are passed to music_OpeningFcn via varargin.

%

%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one

%      instance to run (singleton)".

%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help music

% Last Modified by GUIDE v2.5 04-May-2017 11:14:34

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

'gui_Singleton',  gui_Singleton, ...

'gui_OpeningFcn', @music_OpeningFcn, ...

'gui_OutputFcn',  @music_OutputFcn, ...

'gui_LayoutFcn',  [] , ...

'gui_Callback',   []);

if nargin && ischar(varargin{1})

gui_State.gui_Callback = str2func(varargin{1});

end

if nargout

[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

gui_mainfcn(gui_State, varargin{:});

end

% End initialization code - DO NOT EDIT

% --- Executes just before music is made visible.

function music_OpeningFcn(hObject, eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

% hObject    handle to figure

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% varargin   command line arguments to music (see VARARGIN)

% Choose default command line output for music

handles.output = hObject;

global signal_stop signal_start signal_skip

signal_stop=0;

signal_start=0;

signal_skip=0;

fid=fopen('data.txt','r');

data=importdata('data.xls');

set(handles.listbox1,'String',data);

guidata(hObject, handles);

% UIWAIT makes music wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = music_OutputFcn(hObject, eventdata, handles)

% varargout  cell array for returning output args (see VARARGOUT);

% hObject    handle to figure

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure

varargout{1} = handles.output;

% --- Executes on selection change in listbox1.

function listbox1_Callback(hObject, eventdata, handles)

% hObject    handle to listbox1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,'String')) returns listbox1 contents as cell array

%        contents{get(hObject,'Value')} returns selected item from listbox1

% --- Executes during object creation, after setting all properties.

function listbox1_CreateFcn(hObject, eventdata, handles)

% hObject    handle to listbox1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    empty - handles not created until after all CreateFcns called

% Hint: listbox controls usually have a white background on Windows.

%       See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

function listbox1_DeleteFcn(hObject, eventdata, handles)

% --- Executes on button press in pushbutton1.

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

%上一首

global audio

stop(audio);

num=get(handles.listbox1,'value');

mode=get(handles.popupmenu1,'value');

max_num=length(get(handles.listbox1,'String'));

switch mode

case 1

if num==max_num

set(handles.listbox1,'value',1);

else

set(handles.listbox1,'value',num+1);

end

case 2

for i=1:5 %五次以内一定可以找到不一样的序号

rand_num=randi(max_num);

if rand_num~=num

set(handles.listbox1,'value',rand_num);

end

end

case 3

set(handles.listbox1,'value',num);

end

pushbutton3_Callback(hObject, eventdata, handles);

handles=guidata(hObject);

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton2 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global audio

stop(audio)

num=get(handles.listbox1,'value');

mode=get(handles.popupmenu1,'value'); %检查当前的播放模式

max_num=length(get(handles.listbox1,'String'));%最多多少首歌

switch mode

case 1

if num==max_num

set(handles.listbox1,'value',1);

else

set(handles.listbox1,'value',num-1);

end

case 2

for i=1:5

rand_num=randi(max_num);

if rand_num~=num

set(handles.listbox1,'value',rand_num);

end

end

case 3

set(handles.listbox1,'value',num);

end

pushbutton3_Callback(hObject, eventdata, handles);

handles=guidata(hObject);

% --- Executes on button press in pushbutton3.

function pushbutton3_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton3 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global audio signal_start signal_stop Y FS signal_skip

musics=get(handles.listbox1,'String');

num=get(handles.listbox1,'value');

music=musics(num);

str='.mp3';

file=strcat(music,str);

file=mat2str(cell2mat(file));

file(1)=[];

file(end)=[];

[Y,FS]=audioread(file);

audio=audioplayer(Y,FS);

minutes=floor(get(audio,'TotalSamples')/FS/60);   %因为Y是采集点，Fs为每秒采集多少个点

seconds=floor(get(audio,'TotalSamples')/FS-minutes*60);

% disp(['第' num2str(num) '首歌:',file  '时长' num2str(minutes) '分' num2str(seconds) '秒' ])

if (signal_start~=0) && (signal_stop == 1) %如果只是因为暂停，就从该处开始

play(audio,[signal_start,get(audio,'TotalSamples')]);

disp('重新播放')

signal_start=0;

signal_stop=0;

else if (signal_start~=0) && (signal_skip == 1)

play(audio,[signal_start,get(audio,'TotalSamples')]);

disp('跳转播放')

signal_start=0;

signal_skip=0;

else

play(audio);

disp('正在播放')

end

end

%每隔0.1秒检查歌曲是否放完，如果放完就切到下一首歌

loc=get(audio,'CurrentSample');

while (loc

loc=get(audio,'CurrentSample');

minutes=floor(loc/FS/60);

seconds=floor(loc/FS-minutes*60);

set(handles.edit1,'String',[num2str(minutes) '分' num2str(seconds) '秒']);

if (loc==1)

pushbutton1_Callback(hObject, eventdata, handles);

handles=guidata(hObject);

break

end

pause(0.1);

end

% --- Executes on button press in pushbutton4.

function pushbutton4_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton4 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global audio signal_start signal_stop

signal_start= get(audio,'CurrentSample'); %获取当前位置

signal_stop=1;%意味着确实是暂停

pause(audio);

disp('暂停播放')

% --- Executes on button press in pushbutton5.

function pushbutton5_Callback(hObject, eventdata, handles)

% hObject    handle to pushbutton5 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

global audio

stop(audio);

disp('停止播放');

close all;

% --- Executes on slider movement.

function slider2_Callback(hObject, eventdata, handles)

% hObject    handle to slider2 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'Value') returns position of slider

%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider

global Y FS  signal_start signal_skip

loc=get(handles.slider2,'Value');

minutes=floor(length(Y)/FS*loc/60);

seconds=floor(length(Y)/FS*loc-minutes*60);

set(handles.edit1,'String',[num2str(minutes) '分' num2str(seconds) '秒']); %这样显示的应该是时间

signal_start=round(length(Y)*loc);

signal_skip=1;

% %显示

% cla;

% h=axes('xlabel','Time');

% axis([0 length(Y) 0 0]);

% axes(h)

% plot([0,0],[0,signal_start],'LineWidth',10)

pushbutton3_Callback(handles.pushbutton1, eventdata, handles);

handles=guidata(hObject);

% --- Executes during object creation, after setting all properties.

function slider2_CreateFcn(hObject, eventdata, handles)

% hObject    handle to slider2 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.

if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor',[.9 .9 .9]);

end

% --- Executes on selection change in popupmenu1.

function popupmenu1_Callback(hObject, eventdata, handles)

% hObject    handle to popupmenu1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,'String')) returns popupmenu1 contents as cell array

%        contents{get(hObject,'Value')} returns selected item from popupmenu1

% --- Executes during object creation, after setting all properties.

function popupmenu1_CreateFcn(hObject, eventdata, handles)

% hObject    handle to popupmenu1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.

%       See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end

% --- If Enable == 'on', executes on mouse press in 5 pixel border.

% --- Otherwise, executes on mouse press in 5 pixel border or over listbox1.

% --- Executes during object deletion, before destroying properties.

function pushbutton1_DeleteFcn(hObject, eventdata, handles)

% hObject    handle to pushbutton1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% --- Executes during object deletion, before destroying properties.

function pushbutton2_DeleteFcn(hObject, eventdata, handles)

% hObject    handle to pushbutton2 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% --- Executes during object deletion, before destroying properties.

function pushbutton3_DeleteFcn(hObject, eventdata, handles)

% hObject    handle to pushbutton3 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

function edit1_Callback(hObject, eventdata, handles)

% hObject    handle to edit1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit1 as text

%        str2double(get(hObject,'String')) returns contents of edit1 as a double

% --- Executes during object creation, after setting all properties.

function edit1_CreateFcn(hObject, eventdata, handles)

% hObject    handle to edit1 (see GCBO)

% eventdata  reserved - to be defined in a future version of MATLAB

% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.

%       See ISPC and COMPUTER.

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white');

end