How to check if button is pressed in app designer?

Question

William Pang 2020-7-20

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/567990-how-to-check-if-button-is-pressed-in-app-designer

评论： 지아 백 2022-12-8

Hi! So I've designed an app for doing some image processing, as shown below:

So I want users to be able to load images by pressing either "Single Image" or "Multiple Images". Once the images are loaded, users can then input values into "Filter Size", "threshold", and "Cut Cells Size" and then press the "Compute button".

However, I want my app to run a different code depending on whether the user pressed "Single Image" or "Multiple Image" upon pressing "Compute". I'm having a bit of trouble making this work, and I'm wondering why the below code doesn't work:

function ComputeButtonPushed(app,event)
if app.SingleImageButtonPushed.Value == 1;
    %Run this code
elseif app.MultipleImagesButtonPushed.Value ==1;
    %Run this code
end

2 个评论
显示无隐藏无

Mohammad Sami 2020-7-21

Are the buttons you used of the type "toggle buttons" ?

Also I assume the user should not be allowed to press both buttons. Therefore you might want to put the two toggle buttons inside the button group.

지아 백 2022-12-8

Hello

I've tried to solve this problem too, but it doesn't work.

Did you solve it?

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Cris LaPierre 2020-7-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/567990-how-to-check-if-button-is-pressed-in-app-designer#answer_468804

A simple solution would be to create a property in the app, say something like "app.isSingle". If the "Single Image" button is pressed, its callback code sets the value of this property to "true". If "Multiple Images" is pressed, its callback sets the value to "false". Use this value in the logic of your if statement in the callback function for "Compute".