Introduction :

Progress Indicator describes the time which is needed for some tasks to complete such as downloading, installation, uploading, file transfer, etc. It basically shows the progress of a task or a time to display the length of processes.

---

Table of contents:

:: Circular and Linear Progress Indicator

:: Types of progress indicators

:: Properties of a progress indicator

---

Circular and Linear Progress Indicator:

Flutter can display or indicate the currently running progress in two ways CircularProgressIndicator and LinearProgressIndicator. They both can be used to inform the users about the status of ongoing progress and can currently make the users on hold for a while for any task or progress to complete such as file transfer, uploading, installation, downloading, etc.

A CircularProgressIndicator is a circular progress bar that spins to indicate that the application is busy or on hold or it is a widget that shows progress along a circle. While LinearProgressIndicator which is also known as a progress bar is basically a widget that shows progress in a linear direction or along a line.

There are two types of progress indicators:

Indeterminate: Indeterminate progress indicator is basically an indicator that does not have a specific value at any instance and indicates that the process is being made without indicating how much progress remains. To create an indeterminate progress bar we use value property as null.

Determinate: Determinate progress indicator is basically an indicator that does have a specific value at each time or an instance and it does indicate how much progress is completed. The value here increases monotonically from 0 to 1, where 0 indicates that progress is just started and 1 indicates that the progress is completed.

Sample :

This is how this sample UI looks like as shown below :

Now let’s try to understand the basic property of a progress bar

Let’s Start:

Here above the code, you can see that we have used some basic property inside a linear and circular progress indicator. Let’s try to understand them…

This is how the above UI looks :

---

Properties ::

backgroundColor: This property is used to set the background theme of a circular spin loader and a linear loader in our progress bar.

strokeWidth: It is a width of a line that is used to draw a circle in a CircularProgressIndicator.

minHeight: It is the minimum height of the line that is used to draw the indicator in a LinearProgressIndicator or it’s basically used to define how thick our line in an indicator looks.

valueColor: It is used to define the progress indicator’s value as an animated value. It basically covers the highlights of the completed task valued. To specify a constant color use: AlwaysStoppedAnimation<Color>(color).

value: It is a property that differentiates between the determinate and indeterminate progress bar. If null, this progress indicator is indeterminate, which means that it will show us predefined animation on our indicator with its motion that does not indicate how much progress is completed. If non-null, then it displays how much progress being made. A value of 0.0 indicates that no progress or progress being just started initially and a value of 1.0 indicates that the progress is being completed.

---

For more info visit down the link:

LinearProgressIndicator class
API docs for the LinearProgressIndicator class from the material library, for the Dart programming language.api.flutter.dev

CircularProgressIndicator class
API docs for the CircularProgressIndicator class from the material library, for the Dart programming language.api.flutter.dev

---

Thanks for reading this article ❤

Clap 👏 If this article helps you.

Feel free to post any queries or corrections you think is required…✔

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences!.

In this blog, I will talk about creating a ClipRRect and Custom path using CustomClipper and use it in ClipPath in flutter application. In this app, we can circular the shape of any image using ClipRRect while we can create any type of shape using ClipPath. It will not contain any kind of package in it. We will implement a demo of the ClipRRect and ClipPath in a flutter in your flutter applications. Now let’s start.

---

Table of Contents :

Flutter

ClipRRect and ClipPath

Code Implementation

Code File

Conclusion

---

Flutter :

“ Flutter is Google’s UI toolkit that helps you build beautiful and natively combined applications for mobile, web, and desktop in a single codebase in record time ”

ClipRRect:

The ClipRRect widget is used to clip your child using a round import. It connects with the clippers family. The main function of the clippers is to print any part of the widget as per it’s a requirement. It is similar to ClipRect. It is used to clip the import part of the child widget. ClipRect has its own side per its requirement. We can do circulars. But Clippath is the one used to clip widgets in a customized fashion. We can do widgets as per our requirement. It has two Properties Clippers and ClipBehavior. Clippers what happens takes a custom clipper that defines how the text will be clipped and the clippings are clipped according to this option in the clip behaviour property.

Demo Module :

Code Implement :

1.ClipRRect:

This is a widget used to clip a round import. You can specify the radius of the corner in the borderRadius property of this widget. while you can not resize it in an image with rounded corners without this widget container widget decoration properties.

Create a new dart file calledcliprrect_demo inside the lib folder.

ClipRRect(
  borderRadius: BorderRadius.all(Radius.circular(10)),
  child: Image.asset(_img),
)

2.ClipPath:

We use ClipPath to customize the size of any image or container. The clippath has a clipper property that requires a custom clipper.

Create a new dart file calledclippath_demo inside the lib folder.

Container(
  margin: EdgeInsets.only(left: 15, right: 15),
  alignment: Alignment.center,
  child: ClipPath(
    clipper: ClipPathClass(),
    child: SizedBox(
      width: 320,
      height: 240,
      child: Image.asset(
        _imageUrl,
        fit: BoxFit.cover,
      ),
    ),
  ),
),

Creating a custom clipper requires creating a class. Which extends the CustomClipper<Path> and should override the two methods.

class ClipPathClass extends CustomClipper<Path> {
  @override
  Path getClip(Size size) {
    var path = Path();
    path.lineTo(0.0, size.height - 30);

    var firstControlPoint = Offset(size.width / 4, size.height);
    var firstPoint = Offset(size.width / 2, size.height);
    path.quadraticBezierTo(firstControlPoint.dx, firstControlPoint.dy,
        firstPoint.dx, firstPoint.dy);

    var secondControlPoint = Offset(size.width - (size.width / 4), size.height);
    var secondPoint = Offset(size.width, size.height - 30);
    path.quadraticBezierTo(secondControlPoint.dx, secondControlPoint.dy,
        secondPoint.dx, secondPoint.dy);

    path.lineTo(size.width, 0.0);
    path.close();

    return path;
  }

  @override
  bool shouldReclip(CustomClipper<Path> oldClipper) => false;
}

When the custom clip needs to be updated, it is called the getClip method. and this method has a parameter that gives the value of width and height.

The shouldReclip method is called when providing a new instance of the class. If the new example has different information than the old one, it should be returned true or it is false.

As you can see above, the x- increases horizontally, and Y-axis increases downward.

lineTo:

Using this method one can cut the widget with a line from the given point . x and y are two destinations points where the line stops.

quadraticBeizerTo:

with the help of quadraticBeizer method, you can clip your widget with curves.we can draw a quadratic bezier curve using the control point and endpoint.

Code File:

import 'package:flutter/material.dart';
import 'package:flutter_cliprrect_clipath_demo/route_names.dart';

class ClipRRectDemo extends StatefulWidget {
  @override
  _ClipRRectDemoState createState() => _ClipRRectDemoState();
}

class _ClipRRectDemoState extends State<ClipRRectDemo> {
  double _height;
  double _width;
  String _img = 'assets/images/just_in2.jpg';

  @override
  Widget build(BuildContext context) {
    _height = MediaQuery.of(context).size.height;
    _width = MediaQuery.of(context).size.width;
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.blue[300],
        title: Text('ClipRRect'),
        centerTitle: true,
      ),
      body: Container(
        padding: EdgeInsets.all(20),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            Center(
                child: ClipRRect(
              borderRadius: BorderRadius.all(Radius.circular(10)),
              child: Image.asset(_img),
            )),
            MaterialButton(
              onPressed: () {
                Navigator.of(context).pushNamed(RouteName.CliPathScreen);
              },
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.all(Radius.circular(5.0))),
              height: _height / 18,
              minWidth: _width,
              elevation: 0,
              color: Colors.blue[300],
              padding: EdgeInsets.all(16.0),
              child: Text('Next',
                  style: TextStyle(
                    fontSize: 15,
                    fontWeight: FontWeight.w600,
                    fontFamily: 'Roboto Medium',
                    color: Colors.white,
                  )),
            ),
          ],
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';
import 'package:flutter_cliprrect_clipath_demo/clipath_class.dart';

class ClipPathDemo extends StatefulWidget {
  @override
  _ClipPathDemoState createState() => _ClipPathDemoState();
}

class _ClipPathDemoState extends State<ClipPathDemo> {
  double _height;
  double _width;

  String _imageUrl = 'assets/images/just_in2.jpg';

  @override
  Widget build(BuildContext context) {
    _height = MediaQuery.of(context).size.height;
    _width = MediaQuery.of(context).size.width;
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.blue[300],
        title: Text('ClipPath'),
        centerTitle: true,
      ),
      body: Container(
        margin: EdgeInsets.only(left: 15, right: 15),
        alignment: Alignment.center,
        child: ClipPath(
          clipper: ClipPathClass(),
          child: SizedBox(
            width: 320,
            height: 240,
            child: Image.asset(
              _imageUrl,
              fit: BoxFit.cover,
            ),
          ),
        ),
      ),
    );
  }
}

Conclusion :

In this article, I have explained a ClipRRect and Clippath demo, you can modify and experiment according to your own, this little introduction was from the ClipRRect and Clippath from our side.

I hope this blog helps will provide you with sufficient information in Trying up the ClipRRect and Clippath in your flutter project. So please try it.

❤ ❤ Thanks for reading this article ❤❤

---

If I got something wrong? Let me know in the comments. I would love to improve.

Clap 👏 If this article helps you.

---

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

Feel free to connect with us:
And read more articles from FlutterDevs.com

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences.

Introduction :

Spacer widget is used to create a customized spacing between the widget. It is mainly used to create an adjustable spacing between the widgets in a flex container like Rows and Columns.

---

Table of contents:

:: Introduction to Spacer class

:: Properties used in Spacer

---

Spacer class :

Flutter although provides spacing alignments that are already predefined such as spaceAround, spaceEvenlyand spaceBetween but still provides an additional Spacer widget just for adjustable spacing as per their need accordingly. The main advantage of using Spacer is that the spacing provided between the widgets is set according to our requirements.

Properties used in Spacer class :

key: Controls how one widget replaces another widget in the tree.

flex: This property is used to define how much space is required to take up between the widgets. This property creates a space between widgets in form of ratio division. It takes an integer value and its default value is 1.

Sample :

This is how the spacing between the container looks like :

As you can see above the space between the container is equally divided in an equal ratio accordingly.

Now let’s try to understand this widget by taking more examples:

Let’s Start:

Here above the code, we have used flex property with its different-different values inside the Spacer widget. Spacer widget uses flex value 3 between the first two containers and flex value 2 between the second and third container, and value 1 between the third and fourth container while no Spacer widget is used after the fourth container.

This is how it looks ::

In the above example, the flex property is used inside the Spacer widget. The flex value in total is 3 + 2 + 1 = 6 .

Now let’s understand the spacing ratio. The space between the first and second container will be 3/6 of the applied space while the space between the second and the third container will be 2/6 of the space while the flex value between the third and fourth container is 1 so it will be having 1/6 of an applied spacing.

Remember the default value of flex is 1. If the flex property is not used inside the Spacer widget it will automatically set it as its default value.

Note:: The same concept can also be applied to Column as already mentioned above.

---

For more info visit down the link:

Spacer class
API docs for the Spacer class from the widgets library, for the Dart programming language.api.flutter.dev

---

Thanks for reading this article ❤

Clap 👏 If this article helps you.

Feel free to post any queries or corrections you think are required…✔

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences!.

Related: Wrap Class In Flutter

Related: Implement Listener Class in Flutter

Related: Dart Generators & Callable Class In Flutter

Introduction :

Wrap class is a widget that is used to display its children or widget in a multiple horizontal or vertical direction. Wrap class is basically used to wrap our children in a direction as provided which looks similar to somewhat Rows and Columns.

---

Table of content :

:: Introduction to Wrap class

:: Properties used in a Wrap class

---

Wrap class :

Wrap class is used to align or adjust multiple widgets vertically or horizontally similar to Rows and Columns. It can be adjusted either in form of Row or Column as required. Wrap class automatically align or fit the widgets accordingly in its cross-axis area without displaying an Overflow message similar to Rows and Columns.

Properties :

alignment: this property is used to describe how the children should align in the main axis. Its default value is WrapAlignment.start.

clipBehavior: This property takes in Clip enum as the object and decides whether the content should be clipped or not according to the option.

crossAxisAlignment: this property is used to describe how the children should be aligned relative to each other in the cross-section part. Its default value is WrapCrossAlignment.start .

direction: This property uses a direction as the main axis. By default axis is horizontal and we can change it to vertical by using Axis.verical its value.

runAlignment: this property describes how the run should be placed in the cross axis. Its default value is WrapAlignment.start.

spacing: this property is used to place a space between children in the main axis.

runSpacing: this property is used to place a space between the children along a cross axis.

textDirection: this property is used to arrange the children inside Wrap class in the given direction.

verticalDirection: this property is used to determine the order to lay children out vertically and how to interpret start and end in the vertical direction.

Sample :

This is how this sample looks :

But if we have used Row instead of this Wrap class then the widget may have Overflowed by pixels as shown below…👀

To fix such issues we uses Wrap class instead of using Rows and Columns.

Implementation:

As shown above we can also apply other properties also…👍

---

For more info visit down the link:

Wrap class
A widget that displays its children in multiple horizontal or vertical runs. A Wrap lays out each child and attempts to…api.flutter.dev

---

Thanks for reading this article ❤

Clap 👏 If this article helps you.

Feel free to post any queries or corrections you think are required…✔

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire a flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences!.

Related: Dart Generators & Callable Class In Flutter

In this article, We will explain about The dropdown button in a flutter. A dropdown button is a material design button. So let’s apply a demo of the dropdown button in your flutter applications.

---

Table of Contents :

Flutter

Dropdown Button

Code Implementation

Code File

Conclusion

---

Flutter :

“ Flutter is Google’s UI toolkit that helps you build beautiful and natively combined applications for mobile, web, and desktop in a single code base in record time ”

Dropdown Button:

We use the Dropdown Button to display any Dropdown List item as we can change its style according to it. Such as its background color, border secular etc. As this Dropdown list because it is a clickable widget. Which shows the list item we have selected. The Dropdown Button has DropDownMenuItem. We initialize whatever is to be shown in the list. and the Dropdown button has a function named onChnaged. When a user clicks on an item from the dropdown. So it triggers and executes the triggered function.

Demo Module :

Code Implement :

Create a new dart file calledflutter_dropdown_button_demo inside the lib folder.

Have a Look at the code Implementation :

DropdownButton<String>(
  focusColor:Colors.white,
  value: _chosenValue,
  //elevation: 5,
  style: TextStyle(color: Colors.white),
  iconEnabledColor:Colors.black,
  items: <String>[
    'Android',
    'IOS',
    'Flutter',
    'Node',
    'Java',
    'Python',
    'PHP',
  ].map<DropdownMenuItem<String>>((String value) {
    return DropdownMenuItem<String>(
      value: value,
      child: Text(value,style:TextStyle(color:Colors.black),),
    );
  }).toList(),
  hint:Text(
    "Please choose a langauage",
    style: TextStyle(
        color: Colors.black,
        fontSize: 14,
        fontWeight: FontWeight.w500),
  ),
  onChanged: (String value) {
    setState(() {
      _chosenValue = value;
    });
  },
),

We have explained the Dropdown in this screen. We list items using the Dropdown Button. To show on the click of a button, in the Dropdown Button we have initialized some list items. Which is of string type. That will show us the item.

Seeing the screen above. There is a list showing in this screen, which will initialize the value of the DropdownMenuItemin the Dropdown Button and will show the click value on the click of its item in onChanged.

Code File :

import 'package:flutter/material.dart';

class DropDownDemo extends StatefulWidget {
  @override
  _DropDownDemoState createState() => _DropDownDemoState();
}

class _DropDownDemoState extends State<DropDownDemo> {
  String _chosenValue;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('DropDown'),
      ),
      body: Center(
        child: Container(
          padding: const EdgeInsets.all(0.0),
          child: DropdownButton<String>(
            value: _chosenValue,
            //elevation: 5,
            style: TextStyle(color: Colors.black),

            items: <String>[
              'Android',
              'IOS',
              'Flutter',
              'Node',
              'Java',
              'Python',
              'PHP',
            ].map<DropdownMenuItem<String>>((String value) {
              return DropdownMenuItem<String>(
                value: value,
                child: Text(value),
              );
            }).toList(),
            hint: Text(
              "Please choose a langauage",
              style: TextStyle(
                  color: Colors.black,
                  fontSize: 16,
                  fontWeight: FontWeight.w600),
            ),
            onChanged: (String value) {
              setState(() {
                _chosenValue = value;
              });
            },
          ),
        ),
      ),
    );
  }
}

Conclusion :

In this article, I have explained a Dropdown Button demo, you can modify and experiment according to your own, this little introduction was from the Dropdown Button from our side.

I hope this blog helps will provide you with sufficient information in Trying up the Dropdown Button demo in your flutter project. So please try it.

❤ ❤ Thanks for reading this article ❤❤

---

From Our Parent Company Aeologic

Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.

Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.

Feel free to connect with us:
And read more articles from FlutterDevs.com

FlutterDevs team of Flutter developers to build high-quality and functionally-rich apps. Hire flutter developer for your cross-platform Flutter mobile app project on an hourly or full-time basis as per your requirement! You can connect with us on Facebook, GitHub, Twitter, and LinkedIn for any flutter related queries.

We welcome feedback and hope that you share what you’re working on using #FlutterDevs. We truly enjoy seeing how you use Flutter to build beautiful, interactive web experiences.