如何在 Flutter 中将“RaisedButton”升级为“ElevatedButton”？

Question

I got the following code and want to make it work:

              RaisedButton(
                child:
                    Text(_authMode == AuthMode.Login ? 'LOGIN' : 'SIGN UP'),
                onPressed: _submit,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(30),
                ),
                padding:
                    EdgeInsets.symmetric(horizontal: 30.0, vertical: 8.0),
                color: Theme.of(context).primaryColor,
                textColor: Theme.of(context).primaryTextTheme.button.color,
              ),

I tried to change it to some point as the following:

          ElevatedButton(
            child:
                Text(_authMode == AuthMode.Login ? 'LOGIN' : 'SIGN UP'),
            onPressed: _submit,
            style: ButtonStyle(
              shape: MaterialStateProperty.all<RoundedRectangleBorder>(
                RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(30),
                )
              )
            ),

            padding:
                EdgeInsets.symmetric(horizontal: 30.0, vertical: 8.0),
            color: Theme.of(context).primaryColor,
            textColor: Theme.of(context).primaryTextTheme.button.color,
          ),

But I don't know what to do with padding , color , and textColor ?

Answer 1

Here's how to convert the RaisedButton to an ElevatedButton .

On the ElevatedButton use:

• For the textColor use the TextStyle on the Text widget.
• For rounded corners, instead of shape , use the style property.
• For the color , use the style property.
• For padding , use the style property.

Your code should look like this:

ElevatedButton(
      style: ElevatedButton.styleFrom(
        padding: EdgeInsets.symmetric(horizontal: 30.0, vertical: 8.0),
        backgroundColor: Theme.of(context).primaryColor,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(30),
        ),
      ),
      child: Text(
        _authMode == AuthMode.Login ? 'LOGIN' : 'SIGN UP',
        style: TextStyle(
            color: Theme.of(context).primaryTextTheme.button?.color),
      ),
      onPressed: _submit,
    )

See also:

• Create a rounded button / button with border-radius in Flutter

• New Buttons and Button Themes - (Flutter.dev)

Answer 2

Try this

    ElevatedButton(
          child: Text(_authMode == AuthMode.Login ? 'LOGIN' : 'SIGN UP',
           style:TextStyle(color: 
              Theme.of(context).primaryTextTheme.button?.color)),
          onPressed: _submit,
          style: ElevatedButton.styleFrom(
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(30)),
            padding: EdgeInsets.symmetric(horizontal: 30.0, vertical: 8.0),
            backgroundColor: Theme.of(context).primaryColor,
          ),
        )