'How to add image in Flutter

I am developing Flutter app for the first time.. I have an issue in adding a image. I have a below questions :

Where to create images folder?
Where to add assets tag in pubspec.ymal?
Is there any assets folder needed for this?

What I tried :

 assets:
    - images/lake.jpg

inside pubspec.ymal :

Full file :

name: my_flutter_app
description: A new Flutter application.

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true,
  assets:
    - images/lake.jpg

Error log :

#/properties/flutter/properties/uses-material-design: type: wanted [boolean] got true,
Error detected in pubspec.yaml:
Error building assets

FAILURE: Build failed with an exception.

* Where:
Script '/home/abc/Downloads/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 435

* What went wrong:
Execution failed for task ':app:flutterBuildDebug'.
> Process 'command '/home/abc/Downloads/flutter/bin/flutter'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
Finished with error: Gradle build failed: 1

My main.dart code :

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';
// Uncomment lines 7 and 10 to view the visual layout at runtime.
//import 'package:flutter/rendering.dart' show debugPaintSizeEnabled;

void main() {
  //debugPaintSizeEnabled = true;
  runApp(new MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    Widget titleSection = new Container(
      padding: const EdgeInsets.all(32.0),
      child: new Row(
        children: [
          new Expanded(
            child: new Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                new Container(
                  padding: const EdgeInsets.only(bottom: 8.0),
                  child: new Text(
                    'Oeschinen Lake Campground',
                    style: new TextStyle(
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                ),
                new Text(
                  'Kandersteg, Switzerland',
                  style: new TextStyle(
                    color: Colors.grey[500],
                  ),
                ),
              ],
            ),
          ),
          new Icon(
            Icons.star,
            color: Colors.red[500],
          ),
          new Text('41'),
        ],
      ),
    );

    Column buildButtonColumn(IconData icon, String label) {
      Color color = Theme.of(context).primaryColor;

      return new Column(
        mainAxisSize: MainAxisSize.min,
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          new Icon(icon, color: color),
          new Container(
            margin: const EdgeInsets.only(top: 8.0),
            child: new Text(
              label,
              style: new TextStyle(
                fontSize: 12.0,
                fontWeight: FontWeight.w400,
                color: color,
              ),
            ),
          ),
        ],
      );
    }

    Widget buttonSection = new Container(
      child: new Row(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: [
          buildButtonColumn(Icons.call, 'CALL'),
          buildButtonColumn(Icons.near_me, 'ROUTE'),
          buildButtonColumn(Icons.share, 'SHARE'),
        ],
      ),
    );

    Widget textSection = new Container(
      padding: const EdgeInsets.all(32.0),
      child: new Text(
        '''
Lake Oeschinen lies at the foot of the Blüemlisalp in the Bernese Alps. Situated 1,578 meters above sea level, it is one of the larger Alpine Lakes. A gondola ride from Kandersteg, followed by a half-hour walk through pastures and pine forest, leads you to the lake, which warms to 20 degrees Celsius in the summer. Activities enjoyed here include rowing, and riding the summer toboggan run.
        ''',
        softWrap: true,
      ),
    );

    return new MaterialApp(
      title: 'Flutter Demo',
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('Top Lakes'),
        ),
        body: new ListView(
          children: [
            new Image.asset(
              'images/lake.jpg',
              width: 600.0,
              height: 240.0,
              fit: BoxFit.cover,
            ),
            titleSection,
            buttonSection,
            textSection,
          ],
        ),
      ),
    );
  }
}

I am referring this tutorial https://flutter.io/tutorials/layout/

Also I want ask that is there any tools for clean rebuild in flutter as i can't find any options for this..

Any help would be appreciated.

Thank you !

Solution 1:^[1]

I think the error is caused by the redundant ,

flutter:
  uses-material-design: true, # <<< redundant , at the end of the line
  assets:
    - images/lake.jpg

I'd also suggest to create an assets folder in the directory that contains the pubspec.yaml file and move images there and use

flutter:
  uses-material-design: true
  assets:
    - assets/images/lake.jpg

The assets directory will get some additional IDE support that you won't have if you put assets somewhere else.

Solution 2:^[2]

How to include images in your app

1. Create an `assets/images` folder

This should be located in the root of your project, in the same folder as your pubspec.yaml file.
In Android Studio you can right click in the Project view
You don't have to call it assets or images. You don't even need to make images a subfolder. Whatever name you use, though, is what you will register in the pubspec.yaml file.

2. Add your image to the new folder

You can just copy your image into assets/images. The relative path of lake.jpg, for example, would be assets/images/lake.jpg.

3. Register the assets folder in `pubspec.yaml`

Open the pubspec.yaml file that is in the root of your project.

Add an assets subsection to the flutter section like this:

  flutter:
    assets:
      - assets/images/lake.jpg

If you have multiple images that you want to include then you can leave off the file name and just use the directory name (include the final /):
```
  flutter:
    assets:
      - assets/images/
```

4. Use the image in code

Get the asset in an Image widget with Image.asset('assets/images/lake.jpg').

The entire main.dart file is here:

  import 'package:flutter/material.dart';

  void main() => runApp(MyApp());

  class MyApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        home: Scaffold(
          appBar: AppBar(
            title: Text("Image from assets"),
          ),
          body: Image.asset('assets/images/lake.jpg'), //   <--- image
        ),
      );
    }
  }

5. Restart your app

When making changes to pubspec.yaml I find that I often need to completely stop my app and restart it again, especially when adding assets. Otherwise I get a crash.

Running the app now you should have something like this:

Videos

The first video here goes into a lot of detail about how to include images in your app. The second video covers more about how to adjust how they look.

Solution 3:^[3]

Create images folder in root level of your project.
Drop your image in this folder, it should look like

Go to your pubspec.yaml file, add assets header and pay close attention to all the spaces.

flutter:

  uses-material-design: true

  # add this
  assets:
    - images/profile.jpg

Tap on Packages get at the top right corner of the IDE.
Now you can use your image anywhere using
```
Image.asset("images/profile.jpg")
```

Solution 4:^[4]

The problem is in your pubspec.yaml, here you need to delete the last comma.

uses-material-design: true,

Solution 5:^[5]

An alternative way to put images in your app (for me it just worked that way):

1 - Create an assets/images folder

2 - Add your image to the new folder

3 - Register the assets folder in pubspec.yaml

4 - Use this code:

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

    var assetsImage = new AssetImage('assets/images/mountain.jpg'); //<- Creates an object that fetches an image.
    var image = new Image(image: assetsImage, fit: BoxFit.cover); //<- Creates a widget that displays an image.

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("Climb your mountain!"),
          backgroundColor: Colors.amber[600], //<- background color to combine with the picture :-)
        ),
        body: Container(child: image), //<- place where the image appears
      ),
    );
  }
}

Solution 6:^[6]

Create your assets directory the same as lib level

like this

projectName
 -android
 -ios
 -lib
 -assets
 -pubspec.yaml

then your pubspec.yaml like

  flutter:
  assets:
    - assets/images/

now you can use Image.asset("/assets/images/")

Solution 7:^[7]

To use image in Flutter. Do these steps.

1. Create a Directory inside assets folder named images. As shown in figure below

2. Put your desired images to images folder.

3. Open pubpsec.yaml file . And add declare your images.Like:--

4. Use this images in your code as.

  Card(
            elevation: 10,
              child: Container(
              decoration: BoxDecoration(
                color: Colors.orangeAccent,
              image: DecorationImage(
              image: AssetImage("assets/images/dropbox.png"),
          fit: BoxFit.fitWidth,
          alignment: Alignment.topCenter,
          ),
          ),
          child: Text("$index",style: TextStyle(color: Colors.red,fontSize: 16,fontFamily:'LangerReguler')),
                alignment: Alignment.center,
          ),
          );

Solution 8:^[8]

--> Follow Below Steps One OR Multiple Image Insertion.:

-> Create 'assets/images' folder as in project module.
-> put images which you want.
-> use of image using this syntax. ex.
            - Image.asset('assets/images/tony.jpg')

-> use image avatar which you want like, circle, square and much more as your need.
-> Open 'pubspec.yaml' file
-> write the code in 'flutter:' section. ex.
   -------------------------------
   uses-material-design: true
   assets:
    - assets/images/             // if multiple images you have then
    - assets/images/imagename.extension     // if single images you have then
   -------------------------------
-> click on 'PUB GET' button which occurs on Right side of Screen above.
-> Run App.
-> if you get any issue then 
-> Go to file -> Invalid caches/Restart -> Invalid Caches/Restart button
-> Done.

See Below Images to Get a Better idea of Implementation.

   •• Here, add image file like below. ••

   •• Here, add image file Description in PUBSPEC.YAML file like below. ••

Done.??

Solution 9:^[9]

When you adding assets directory in pubspec.yaml file give more attention in to spaces

this is wrong

flutter:
   assets:
    - assets/images/lake.jpg

This is the correct way,

flutter:
  assets:
    - assets/images/

Solution 10:^[10]

their is no need to create asset directory and under it images directory and then you put image. Better is to just create Images directory inside your project where pubspec.yaml exist and put images inside it and access that images just like as shown in tutorial/documention

assets: - images/lake.jpg // inside pubspec.yaml

Solution 11:^[11]

If the image is inside a package dependency, you should also provide the package name, event if you are referencing the image from the same dependency!

Image.asset("assets/pics/events_empty.png", package: "ui_elements"),

Ref: Asset images in package dependencies

Solution 12:^[12]

you can rather use this to see access to everything inside assets, because there may be folders like images, logo, icon, etc...

create the assets folder in the root of the project

MyProject
    android
    assets
    ios
    lib
    test
    web
    windows
    .gitignore
    pubspec.yaml

and in your pubspec.yaml, there are

assets:
#   - images/a_dot_burr.jpeg
#  - images/a_dot_ham.jpeg

replace the last two lines by the 'assets/' to be able to directly access everything inside assets

if you have directly images in assets
```
assets:
  - assets/
```

or if you have sub folders in assets

assets:
  - assets/folder1/
  - assets/folder2/
  - assets/folder3/

Solution 13:^[13]

Make sure you create the assets folder in the main directory, not in the lib folder enter image description here

Solution 14:^[14]

Error when comma is at the end of below line

uses-material-design: true,

when the line after assets: indent is not correct it throws below error

If the indent is corrected as shown in below, then error is fixed.

If the asset file is not added then it highlights that with yellowish background but Pub get doesn't throw error but there will be an error during installation.

In short, Code Indent and syntax is important

You can create a folder and reference it as shown

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	Thomas David Kehoe
Solution 3	CopsOnRoad
Solution 4	CopsOnRoad
Solution 5	Fellipe Sanches
Solution 6	Ben Lau
Solution 7	Dharman
Solution 8
Solution 9	maddy
Solution 10
Solution 11	Ali80
Solution 12
Solution 13	ehsan mosavi
Solution 14

'How to add image in Flutter

Solution 1:[1]

Solution 2:[2]

How to include images in your app

1. Create an assets/images folder

2. Add your image to the new folder

3. Register the assets folder in pubspec.yaml

4. Use the image in code

5. Restart your app

Further reading

Videos

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]

Solution 7:[7]

Solution 8:[8]

Solution 9:[9]

Solution 10:[10]

Solution 11:[11]

Solution 12:[12]

Solution 13:[13]

Solution 14:[14]