添加Padding小部件后出现Flutter异常

Question

I have the following Table inside Card . Since I added the padding widget, I get the following error:

    I/flutter (19671): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (19671): The following assertion was thrown during performLayout():
I/flutter (19671): 'package:flutter/src/rendering/table.dart': Failed assertion: line 882 pos 16: 'tableWidth >=
I/flutter (19671): targetWidth': is not true.
I/flutter (19671): 
I/flutter (19671): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (19671): more information in this error message to help you determine and fix the underlying cause.
I/flutter (19671): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (19671):   https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter (19671): 
I/flutter (19671): When the exception was thrown, this was the stack:
I/flutter (19671): #2      RenderTable._computeColumnWidths (package:flutter/src/rendering/table.dart:882:16)
I/flutter (19671): #3      RenderTable.performLayout (package:flutter/src/rendering/table.dart:1000:33)

code:

body: Container(
          padding: EdgeInsets.all(5.0), margin: EdgeInsets.all(10.0),
            child: Card(
                child: Column(
                    mainAxisSize: MainAxisSize.min,
                    children: <Widget>[
                      Table(
                          children: list)
                    ])
            )
      )

1. Why adding the padding widget throws this error?
2. How I can add padding and margin for my Card?

Answer 1

1. Because of 2 it won't account for growth in the container based on the padding, it will pad inward causing the inners to overflow. Just use the provided properties from Container.

2. Container has a padding and margin property which can be applied. You don't nee to wrap your Containers child with padding.

   Container( child: Text(), padding: EdgeInsets.all(5.0), margin: EdgeInsets.all(10.0) )

See Container-class for more properties that can be used