CODEWITHSUNDEEP
iosflutterflutter-cupertino
Adam B
Adam B

Reputation: 33

Resizing CupertinoNavigationBar don't work with PreferredSize

I'm trying to change the height of the CupertinoNavigationBar for my flutter app. I tried to do it with PreferredSize (like in material app) but unfortunately it doesn't work.

CupertinoPageScaffold(
      navigationBar: PreferredSize(
        preferredSize: Size.fromHeight(70.0),
        child: CupertinoNavigationBar(),
      ),
      child: Text('content'),
    );

Error: The argument type 'PreferredSize' can't be assigned to the parameter type 'ObstructingPreferredSizeWidget?'

So, how can this be done for iOS?

Upvotes: 0

Views: 28

Answers (1)

Ravindra S. Patil
Ravindra S. Patil

Reputation: 14775

As per CupertinoPageScaffold documenation you not declare PreferredSize as navigationBar, you can used CupertinoNavigationBar as navigationBar.

CupertinoPageScaffold expects an ObstructingPreferredSizeWidget? for its navigationBar property, not a PreferredSize. Remove the PreferredSize You can directly use CupertinoNavigationBar as the navigationBar without wrapping it in PreferredSize.

Refer below code:

MaterialApp(
  debugShowCheckedModeBanner: false,
  home: CupertinoPageScaffold(
    navigationBar: CupertinoNavigationBar(
      middle: Text('Cupertino Page Scaffold Sample'),
    ),
    child: Center(
      child: Container(
        child: Text('content'),
      ),
    ),
  ),
)

Upvotes: 0

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