FLUTTER UI Config widget row with 2 dropdown

Question

I have problem with UI in flutter. Anyone have experienced in widget please help me.

Firstly, here's the target from figma :

both date and time is using dropdown.

This is what it become after my code :

This is my code :

Container(
   alignment: Alignment.centerLeft,
   child: Text('Schedule',
       style: TextStyle(
            color: Color.fromRGBO(78, 125, 150, 1),
            fontSize: 12,
            fontWeight: FontWeight.w600
))),
        
Row(
  mainAxisAlignment: MainAxisAlignment.spaceBetween,
  children: [
        Container(
            height: 40,
            width: MediaQuery.of(context).size.shortestSide * 0.5,
            color: Colors.white,
            child: DropdownButtonFormField(
                onChanged: (value) {},
                  items: _dropdownDate.map((value) =>
                      DropdownMenuItem(
                        child: Text(value),
                        value: value,
                      )).toList(),
                elevation: 4,
                dropdownColor: Colors.white,
                decoration: InputDecoration(
                  prefixIcon: const Icon(Icons.calendar_month, size: 16),
                  hintText: 'Select Date',
                  hintStyle: TextStyle(fontSize: 12),
                  focusedBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(10),
                      borderSide: const BorderSide(
                        width: 0.8,
                        color: Colors.grey,
                      )),
                  enabledBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(10),
                      borderSide: const BorderSide(
                        width: 0.8,
                        color: Colors.grey,
                      )),
                  contentPadding: const EdgeInsets.all(16),
                  fillColor: Colors.white
              ),
            ),
        ),
        Container(
            height: 40,
            width: MediaQuery.of(context).size.shortestSide * 0.3,
            color: Colors.white,
            child: DropdownButtonFormField(
              onChanged: (value) {},
              items: _dropdownTime.map((value) =>
                  DropdownMenuItem(
                    child: Text(value),
                    value: value,
                  )).toList(),
              elevation: 4,
              dropdownColor: Colors.white,
              decoration: InputDecoration(
                  prefixIcon: const Icon(Icons.watch_later_outlined, size: 16),
                  focusedBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(10),
                      borderSide: const BorderSide(
                        width: 0.8,
                        color: Colors.grey,
                      )),
                  enabledBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(10),
                      borderSide: const BorderSide(
                        width: 0.8,
                        color: Colors.grey,
                      )),
                  contentPadding: const EdgeInsets.all(16),
                  fillColor: Colors.white
              ),
            ),
        ),
   ],
),

I want to make the size in the row like this :

50% dropdown Date, 20% space, 30% dropdown Time

and the problem are :

I don't know how to configure it as a percentage of row space, not with MediaQuery.of(context).size.width because I already use margin.
How to made the percentage is auto fit no matter device the user will used.

Hope to solved this here, thank you before~

Update, after using layout builder :

lepsch · Accepted Answer · 2022-07-20 11:02:37Z

0

You should use the LayoutBuilder for that instead of MediaQuery. It's going to give you the available space inside the wrapped widget.

The code changes are below. This is the result:

        child: LayoutBuilder(
          builder: (context, constraints) {
            return Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Container(
                  // height: 40,
                  width: constraints.maxWidth * 0.5,
                  color: Colors.white,
                  child: DropdownButtonFormField(
                    onChanged: (value) {},
                    items: _dropdownDate
                        .map((value) => DropdownMenuItem(
                              child: Text(value),
                              value: value,
                            ))
                        .toList(),
                    elevation: 4,
                    dropdownColor: Colors.white,
                    decoration: InputDecoration(
                        prefixIcon: const Icon(Icons.calendar_month, size: 16),
                        hintText: 'Select Date',
                        hintStyle: TextStyle(fontSize: 12),
                        focusedBorder: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(10),
                            borderSide: const BorderSide(
                              width: 0.8,
                              color: Colors.grey,
                            )),
                        enabledBorder: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(10),
                            borderSide: const BorderSide(
                              width: 0.8,
                              color: Colors.grey,
                            )),
                        contentPadding: const EdgeInsets.all(16),
                        fillColor: Colors.white),
                  ),
                ),
                Container(
                  // height: 40,
                  width: constraints.maxWidth * 0.3,
                  color: Colors.white,
                  child: DropdownButtonFormField(
                    onChanged: (value) {},
                    items: _dropdownTime
                        .map((value) => DropdownMenuItem(
                              child: Text(value),
                              value: value,
                            ))
                        .toList(),
                    elevation: 4,
                    dropdownColor: Colors.white,
                    decoration: InputDecoration(
                        prefixIcon: const Icon(Icons.watch_later_outlined, size: 16),
                        focusedBorder: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(10),
                            borderSide: const BorderSide(
                              width: 0.8,
                              color: Colors.grey,
                            )),
                        enabledBorder: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(10),
                            borderSide: const BorderSide(
                              width: 0.8,
                              color: Colors.grey,
                            )),
                        contentPadding: const EdgeInsets.all(16),
                        fillColor: Colors.white),
                  ),
                ),
              ],
            );
          }
        ),

edited Jul 20, 2022 at 11:02

answered Jul 20, 2022 at 10:30

lepsch

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6 Comments

Dimas Satrya Over a year ago

how to implement it in my code above? I've never used layout builder before

lepsch Over a year ago

I've edited the answer with the needed code.

lepsch Over a year ago

BTW, are you sure it's 20% space? From Figma it looks way less.

Dimas Satrya Over a year ago

thank you so much, I'll try the code. in figma maybe it's only 10%, but as long I got how to do it will be configurable later

lepsch Over a year ago

Here you go: To fit the contents inside the DropdownButtonFormField just add the property isExpanded: true for each one of them.

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