Question

我正在尝试在GUI中添加动态进度栏。我注意到有一些可用的解决方案（How to add progress bar control to Matlab gui?）。我的方法基于创建两个不同颜色的面板，一个用于背景，另一个用于前景（即进度条）。我的代码如下：

bar = uipanel('Parent',handles.bgProgressBar,'BackgroundColor','r');
%Note: bgPogressBar is the tag of a panel manually added with GUIDE
barPosition = get(bar,'Position');
cnt = 0
for ii = 1:S
   for jj = 1:T

       do something 
       ….

       cnt = cnt + 1;
       progress = cnt/(S*T);
       barPosition(3) = progress;
       barPosition;
       set(bar,'Position',barPosition);   
   end
end

这里的问题是该栏未实时更新。它不响应，仅在循环完成时进行到最后。可以在GUI中添加动态进度条吗？

Answer 1

在set之后使用drawnow，以便立即更新屏幕上的图形对象：

bar = uipanel('Parent',handles.bgProgressBar,'BackgroundColor','r');
%Note: bgPogressBar is the tag of a panel manually added with GUIDE
barPosition = get(bar,'Position');
cnt = 0
for ii = 1:S
   for jj = 1:T

       do something 
       ….

       cnt = cnt + 1;
       progress = cnt/(S*T);
       barPosition(3) = progress;
       barPosition;
       set(bar,'Position',barPosition);   
       drawnow %%%%%
   end
end

Matlab：在GUI窗口中添加动态更新的进度栏

1 个答案: