写一段appdesigner代码,要能随时暂停和继续循环,用不同的方法写
时间: 2024-03-09 19:49:10 浏览: 29
方法一:使用状态变量实现循环控制
```matlab
% 创建一个状态变量
isRunning = true;
% 循环
while isRunning
% 执行代码
disp('循环中...');
% 暂停一段时间
pause(1);
end
% 继续循环
isRunning = true;
% 停止循环
isRunning = false;
```
方法二:使用 `timer` 对象实现循环控制
```matlab
% 创建一个 timer 对象
t = timer('ExecutionMode', 'fixedRate', 'Period', 1, 'TimerFcn', @timerCallback);
% 启动 timer
start(t);
% 定义 timer 回调函数
function timerCallback(~, ~)
% 执行代码
disp('循环中...');
end
% 暂停 timer
stop(t);
% 继续 timer
start(t);
% 停止 timer
stop(t);
```
以上两种方法均可以实现循环控制,可以根据需要选择使用。
相关问题
写一段appdesigner代码,要能随时暂停和继续循环
好的,以下是一段简短的 AppDesigner 代码,可以实现暂停和继续循环的功能:
```matlab
function appdesignerCode
% 创建 AppDesigner App
app = uifigure();
app.Position = [100 100 500 400];
app.Name = '暂停和继续循环';
% 创建按钮
startButton = uibutton(app, 'push', ...
'Position', [50 50 100 22], ...
'Text', '开始', ...
'ButtonPushedFcn', @(startButton,event)startFcn());
pauseButton = uibutton(app, 'push', ...
'Position', [200 50 100 22], ...
'Text', '暂停', ...
'ButtonPushedFcn', @(pauseButton,event)pauseFcn());
resumeButton = uibutton(app, 'push', ...
'Position', [350 50 100 22], ...
'Text', '继续', ...
'Enable', 'off', ...
'ButtonPushedFcn', @(resumeButton,event)resumeFcn());
% 定义循环函数
function startFcn()
set(startButton, 'Enable', 'off');
set(pauseButton, 'Enable', 'on');
set(resumeButton, 'Enable', 'on');
for i = 1:10
pause(1);
disp(i);
end
end
% 定义暂停函数
function pauseFcn()
set(pauseButton, 'Enable', 'off');
set(resumeButton, 'Enable', 'on');
drawnow(); % 刷新界面,立即响应暂停按钮
uiwait(app); % 等待恢复按钮被按下
end
% 定义继续函数
function resumeFcn()
set(resumeButton, 'Enable', 'off');
uiresume(app); % 恢复循环
end
end % 声明函数完成
```
这个 AppDesigner 应用程序创建了三个按钮:开始、暂停和继续。按下开始按钮时,程序会执行一个简单的循环,每秒输出一个数字。按下暂停按钮时,程序会停止循环,并等待恢复按钮被按下。按下恢复按钮时,程序会继续循环。
写一段appdesigner代码,要将暂停和继续循环的功能嵌套在一个function里面
好的,以下是一段App Designer代码,其中包含了一个名为"loopControl"的函数,该函数可以控制循环的暂停和继续:
```matlab
classdef ExampleApp < matlab.apps.AppBase
% Properties that correspond to app components
properties (Access = public)
UIFigure matlab.ui.Figure
StartButton matlab.ui.control.Button
StopButton matlab.ui.control.Button
LoopControlButton matlab.ui.control.Button
end
% Callbacks that handle component events
methods (Access = private)
% Code that executes after component creation
function startupFcn(app)
% Initialize loop control variables
app.isLooping = true;
app.isPaused = false;
end
% Button pushed function: StartButton
function StartButtonPushed(app, event)
% Start the loop
while app.isLooping
% Add your code here
% ...
% Check if the loop is paused
while app.isPaused
pause(0.1); % Wait for 0.1 seconds
end
end
end
% Button pushed function: StopButton
function StopButtonPushed(app, event)
% Stop the loop
app.isLooping = false;
end
% Button pushed function: LoopControlButton
function LoopControlButtonPushed(app, event)
% Toggle pause state
app.isPaused = ~app.isPaused;
end
% Function to control looping
function loopControl(app)
while app.isLooping
% Add your code here
% ...
% Check if the loop is paused
while app.isPaused
pause(0.1); % Wait for 0.1 seconds
end
end
end
end
% App initialization and construction
methods (Access = private)
% Create UIFigure and components
function createComponents(app)
% Create UIFigure
app.UIFigure = uifigure;
app.UIFigure.Position = [100 100 640 480];
app.UIFigure.Name = 'Example App';
% Create StartButton
app.StartButton = uibutton(app.UIFigure, 'push');
app.StartButton.ButtonPushedFcn = createCallbackFcn(app, @StartButtonPushed, true);
app.StartButton.Position = [42 58 100 22];
app.StartButton.Text = 'Start';
% Create StopButton
app.StopButton = uibutton(app.UIFigure, 'push');
app.StopButton.ButtonPushedFcn = createCallbackFcn(app, @StopButtonPushed, true);
app.StopButton.Position = [168 58 100 22];
app.StopButton.Text = 'Stop';
% Create LoopControlButton
app.LoopControlButton = uibutton(app.UIFigure, 'push');
app.LoopControlButton.ButtonPushedFcn = createCallbackFcn(app, @LoopControlButtonPushed, true);
app.LoopControlButton.Position = [294 58 100 22];
app.LoopControlButton.Text = 'Pause/Resume';
end
end
% App creation and deletion
methods (Access = public)
% Construct app
function app = ExampleApp
% Create and configure components
createComponents(app)
% Register the app with App Designer
registerApp(app, app.UIFigure)
% Execute the startup function
runStartupFcn(app, @startupFcn)
% Show the figure after all components are created
app.UIFigure.Visible = 'on';
end
% Code that executes before app deletion
function delete(app)
% Delete UIFigure when app is deleted
delete(app.UIFigure);
end
end
end
```
在上面的代码中,我们定义了一个名为"loopControl"的函数,该函数可以控制循环的暂停和继续。在"StartButtonPushed"回调函数中,我们使用了一个while循环来执行我们的代码,并在每次循环结束时检查循环是否被暂停。"StopButtonPushed"回调函数用于停止循环,而"LoopControlButtonPushed"回调函数用于切换循环的暂停状态。在"startupFcn"中,我们初始化了循环控制变量"isLooping"和"isPaused"。