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ScrollView RenderFlex overflow - Flutter


I'm new to Flutter and have been trying to clone a screen that requires a scroll architecture.
Here is the link of the screen that i'm working on. https://i.sstatic.net/1OW2b.png
The code is as below.
PS: Ignore the fields that are incomplete. As soon as I get the scroll view, i'll add the functionalities afterwards.

Scaffold(
      body: Column(
        children: <Widget>[
          Padding(
            padding: const EdgeInsets.fromLTRB(15.0, 40.0, 15.0, 0),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: <Widget>[
                    Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: const <Widget>[
                        Icon(Icons.menu),
                        Image(),       //Asset image
                      ],
                    ),
                    Row(
                      children: <Widget>[
                        const Icon(Icons.notifications_none),
                        const SizedBox(width: 27.0),
                        CircleAvatar(
                          child: Text("JM"),
                        ),
                      ],
                    )
                  ],
                ),
                Row(
                  children: const <Widget>[
                    Icon(Icons.arrow_back),
                    SizedBox(width: 20.0),
                    Text("Public page"),
                  ],
                ),
                const SizedBox(
                  height: 20.0,
                ),
                const Text("  Please fill the form following the proper order."),
                const SizedBox(height: 10.0),

                OverviewWidget(), //Widget with lots of TextFormField
                SizedBox(height: 10.0),
                DescriptionWidget(), //Widget with lots of TextFormField

              ],
            ),
          ),
          Align([enter image description here][1]
            alignment: Alignment.bottomCenter,
            child: GestureDetector(
              onTap: () {
                print("Hello");
              },
              child: Container(
                height: 130.0,
                width: double.infinity,
                alignment: Alignment.center,
                decoration: BoxDecoration(
                  color: Colors.white,
                  boxShadow: [
                    BoxShadow(
                      color: Colors.grey.shade400,
                      blurRadius: 10,
                      spreadRadius: 1,
                    )
                  ],
                ),
                child: Container(
                  margin: const EdgeInsets.only(top: 10.0, bottom: 30.0),
                  decoration: BoxDecoration(
                    color: Colors.green.shade400,
                    borderRadius: BorderRadius.circular(35),
                  ),
                  child: const Padding(
                    padding: EdgeInsets.symmetric(
                      vertical: 15.0,
                      horizontal: 150.0,
                    ),
                    child: Text(
                      "Save",
                      style: TextStyle(
                          color: Colors.white,
                          fontSize: 17,
                          fontWeight: FontWeight.w600),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );

So far, i've only created the Overview and Description widgets and i'm already getting RenderFlex overflow error. I tried wrapping the very first Column widget with a SingleChildScrollView widget but it can be noticed that the Save button at the bottom should stay fixed. I tried wrapping the whole widget with Stack widget instead of a Column widget but it didn't help either. I also used ListView widget but got the same results.
What shall I do to achieve this view?


Solution

  • I guess you had all the elements but did not quite manage to use them as needed.

    Your screen is composed of two important layout:

    • A stack (containing a button on top of a scrollable widget)
    • The scrollable widget

    The stack has to be a stack, the scrollable can be anything but in your case SingleChildScrollView+Column seems the best choice.

    Here is the concrete implementation:

    Scaffold(
      body: Stack(
        children: <Widget>[
          Padding(
            padding: const EdgeInsets.fromLTRB(15.0, 40.0, 15.0, 0),
            child: SingleChildScrollView(
              child: Padding(
                padding: const EdgeInsets.only(bottom: 100.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: <Widget>[
                        Row(
                          crossAxisAlignment: CrossAxisAlignment.center,
                          children: <Widget>[
                            Icon(Icons.menu),
                            Container(
                              height: 100,
                              width: 100,
                              color: Colors.redAccent,
                            ),
                            //Asset image
                          ],
                        ),
                        Row(
                          children: <Widget>[
                            const Icon(Icons.notifications_none),
                            const SizedBox(width: 27.0),
                            CircleAvatar(
                              child: Text("JM"),
                            ),
                          ],
                        )
                      ],
                    ),
                    Row(
                      children: const <Widget>[
                        Icon(Icons.arrow_back),
                        SizedBox(width: 20.0),
                        Text("Public page"),
                      ],
                    ),
                    const SizedBox(
                      height: 20.0,
                    ),
                    const Text("  Please fill the form following the proper order."),
                    const SizedBox(height: 10.0),
    
                    Container(
                      height: 400,
                      color: Colors.blueAccent,
                    ), //Widget with lots of TextFormField
                    SizedBox(height: 10.0),
                    Container(
                      height: 400,
                      color: Colors.greenAccent,
                    ), //Widget with lots of TextFormField
                  ],
                ),
              ),
            ),
          ),
          Align(
            alignment: Alignment.bottomCenter,
            child: GestureDetector(
              onTap: () {
                print("Hello");
              },
              child: Container(
                height: 130.0,
                width: double.infinity,
                alignment: Alignment.center,
                decoration: BoxDecoration(
                  color: Colors.white,
                  boxShadow: [
                    BoxShadow(
                      color: Colors.grey.shade400,
                      blurRadius: 10,
                      spreadRadius: 1,
                    )
                  ],
                ),
                child: Container(
                  margin: const EdgeInsets.only(top: 10.0, bottom: 30.0),
                  decoration: BoxDecoration(
                    color: Colors.green.shade400,
                    borderRadius: BorderRadius.circular(35),
                  ),
                  child: const Padding(
                    padding: EdgeInsets.symmetric(
                      vertical: 15.0,
                      horizontal: 150.0,
                    ),
                    child: Text(
                      "Save",
                      style: TextStyle(
                          color: Colors.white, fontSize: 17, fontWeight: FontWeight.w600),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    )
    

    Note that you have to put a bottom padding inside the SingleChildScrollView to take into account the button. This is fine in your case since the button has a static height. However if you need something more fancy you might want to check How to create a scroll view with fixed footer with Flutter? as @Csisanyi suggested