Get index of selected button in button toggle group

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Jim Hokanson
Jim Hokanson 2017-11-10
回答： Joshua Brownlow 2019-4-1
When using a ButtonGroup in AppDesigner it is not clear how to get the index of the selected button. The only available approach appears to be:
string_values = {h.Buttons.Text};
I = find(strcmp(h.SelectedObject.Text,string_values));
Is there anything more direct?

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回答（2 个）

Matt J
Matt J 2017-11-10
编辑：Matt J 2017-11-10
I don't think so, but I don't immediately see why you would want to assign numeric indices to the different buttons. Processing the selection would normally be done index-free using a switch...case
switch h.SelectedObject.Text
case 'Button #1'
case 'Button #2'
end
If you want to associate selections with numeric values, a slider or spinner would be a more appropriate component.
Joshua Brownlow
Joshua Brownlow 2019-4-1
I still don't think this is the best way, but you can cycle through the buttons in the group with a for loop to check which index has a value of 1 for being pressed down
for i = 1:buttonGroupSize
app.ButtonGroup.Buttons(i).Value
end

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