Introduction to Photo Editor

Photo Editor app is a smart Flutter photo editor app. It contains Flutter source code and to build your photo editor application with most useful features and eye-catching outlook. If you are planning to deploy your photo editor app project for android and ios users, then it’s your perfect match to have on your hand. The product comes with Photo effect, Photo filter, Add Text support. You can customise a bit and decide what to show or not into the app real-time.

Prerequisite

Photo Editor App Screenshots

Project Structure & Features

Introduction to Flutter

Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for MOBILE, WEB, and DESKTOP from a single codebase. It is very easy to learn and currently it is getting more and more popular. With this blog post, you will learn some basic stuff about Flutter and after reading it, you will be able to create a simple application using this technology.

Click here to check out more details about flutter.

Tools & Setup

Prerequisite

Android Studio – Windows​

• Download Android Studio - https://developer.android.com/studio/
• Get the Flutter SDK - https://flutter.dev/docs/get-started/install
• Learn more about Android Studio - https://developer.android.com/studio/intro/

Step 1 : Get the Flutter SDK

1 Download the following installation bundle to get the latest stable release of the Flutter SDK:

2 Extract the zip file and place the contained flutter in the desired installation location for the Flutter SDK (for example, C:\src\flutter; do not install Flutter in a directory like C:\Program Files\ that requires elevated privileges).

Step 2 : Update your path

If you wish to run Flutter commands in the regular Windows console, take these steps to add Flutter to the PATH environment variable: From the Start search bar, enter ‘env’ and select Edit environment variables for your account. Under User variables check if there is an entry called Path:

• If the entry exists, append the full path to flutter\bin using ; as a separator from existing values.
• If the entry doesn’t exist, create a new user variable named Path with the full path to flutter\bin as its value.

Step 3 : Run flutter doctor

From a console window that has the Flutter directory in the path (see above), run the following command to see if there are any platform dependencies you need to complete the setup:

c:\src\flutter>flutter doctor

Android Studio – macOS​ ​

• Download Android Studio - https://developer.android.com/studio/
• Download Xcode - https://apps.apple.com/us/app/xcode/id497799835?mt=12
• Get the Flutter SDK - https://flutter.dev/docs/get-started/install
• Learn more about Android Studio - https://developer.android.com/studio/intro/

Step 1 : Get the Flutter SDK

• Download the following installation bundle to get the latest stable release of the Flutter SDK:
• Download SDK and extract downloaded file, just double click on that. and just copy extracted folder and paste it to your desired location (for example, Documents\flutter).

Step 2 : Update your path

To update PATH variable, we need to open terminal.

To update PATH variable for current terminal window only, then enter this command "export PATH="$PATH:`pwd`/flutter/bin"" and hit enter key.

To update PATH variable permanently, then Open or create .bash_profile file. to open or create that file, then enter "sudo open -e $HOME/.bash_profile" and hit enter key.

Run this command on terminal "source $HOME/.bash_profile" to refresh PATH variables.

Then check whether our SDK is successfully installed or not.

You are now ready to run Flutter commands in the Flutter Console!

Run "flutter doctor" into terminal, If you are getting check list of flutter sdk requirements, it means SDK is successfully installed on your machine. and you can start building flutter apps on your machine.

If you find any issue during environment setup in macos, please go online Click here

Android Studio – Linux​​

• Download Android Studio - https://developer.android.com/studio
• Get the Flutter SDK - https://flutter.dev/docs/get-started/install/linux
• Learn more about Android Studio - https://developer.android.com/studio/intro/

Step 1 : Get the Flutter SDK

• Download the following installation bundle to get the latest stable release of the Flutter SDK:
• Download SDK and extract downloaded file, just double click on that. and just copy extracted folder and paste it to your desired location (for example, Documents\flutter).

Step 2 : Update your path

You’ll probably want to update this variable permanently, so you can run flutter commands in any terminal session. To update PATH variable, we need to open terminal.

export PATH="$PATH:[PATH_TO_FLUTTER_GIT_DIRECTORY]/flutter/bin"

1. Run source $HOME/. to refresh the current window, or open a new terminal window to automatically source the file.
2. Verify that the flutter/bin directory is now in your PATH by running:

echo $PATH

Verify that the flutter command is available by running:

which flutter

Getting Started (Build & Run)

Download Project

Download and find the your project folder, use your preferred IDE (Android Studio / Visual Studio Code / IntelliJ IDEA) to run the project.

Get Dependencies

After you loaded project successfully, run the following command in the terminal to install all the dependencies listed in the pubspec.yaml file in the project's root directory or just click on Pub get in pubspec.yaml file if you don't want to use command.

flutter pub get

Build and Run App

After the app build completes, you’ll see the app on your device.

If you don’t use Android Studio or IntelliJ you can use the command line to run your application using the following command

flutter run

You will see below like screen after you have build your app successfully

Try hot reload

Flutter offers a fast development cycle with Stateful Hot Reload, the ability to reload the code of a live running app without restarting or losing app state. Make a change to app source, tell your IDE or command-line tool that you want to hot reload, and see the change in your simulator, emulator, or device.

Configuration & Customization

Android Configuration

Setup Firebase

• For Firebase setup, you just need to change the android/app/google-services.json file.
• Create a new firebase account, register your application with your package name.
• Now download the google-services.json file and replace with current.
• Refer to Link

Setup AdMob

• For AdMob setup, you just need to change the app id in android/app/src/main/AndroidManifest.xml file
• For that, you have to create a firebase account and create a new application in AdMob. and then you will get application id.

Now, replace ca-app-pub-1399327544318575~7586962359 with your new generated application id.


• Now run the application. your ads are now live.

Open Android module in Android Studio

• Open Android Studio.
• Select Open an existing Android Studio Project.
• Open the android directory within your app.
• Wait until the project has been synced successfully. (This happens automatically once you open the project, but if it doesn’t, select Sync Project with Gradle Files from the File menu).
• Now, click on Run button.

Change Application Name

• You must want to change your application name. This is how you can do. Follow the below step.
• Open /android/app/src/main/AndroidManifest.xml and specify your application name.

manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example">
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />                    
        <application
        android:name="io.flutter.app.FlutterApplication"
        android:label="YOUR_APPLICATION_NAME"
        android:icon="@mipmap/ic_launcher">
<activity>

Change Application Icon

• See How to generate an application icon?
• Browse your image and click on Download icon. After successfully generated, replace all icons in respective folders:

• /mipmap-hdpi in /android/app/src/main/res/ folder
• /mipmap-mdpi in /android/app/src/main/res/ folder
• /mipmap-xhdpi in /android/app/src/main/res/ folderr
• /mipmap-xxhdpi in /android/app/src/main/res/ folder
• /mipmap-xxxhdpi in /android/app/src/main/res/ folder

Change Application ID

• Follow the below steps to change you Application ID.
• Open /android/app/build.gradle

defaultConfig 
{
    applicationId "YOUR_APPLICATION_ID"
    minSdkVersion 21
    targetSdkVersion 29
    versionCode 1
    versionName "1.0.0"
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}




Generate Signed APK

• Go to your project -> Tools -> Flutter -> Open for Editing in Android Studio as shown below




• Open Project in New Window
• Wait for while until project synchronization. After that Go to Build -> GenerateSigned Bundle/APK...




• Select Android App Bundle or APK Option as per your need. (Android App Bundle is best solution) and click Next button.




• Select Create new.. option to generate new Signed key (When you release your app First Time) and Fill all options. Refer this link




• Click Next button and you will get following screen...




Select Build variants - release and Signature versions both V1 and V2 respectively as shown above screen shot and click Finish button.

• Wait for a while until Gradle Build Running process complete.and finally you will get the Generate Signed APK : (APKs) generated successfully . from that click on Locate option to get Location of your Generate Signed APK Key.

iOS Configuration

Open Project in Android Studio

• Open android studio in your project.
• Open terminal in android studio.
• Pub get.
• Open terminal cd ios.
• pod install.
• run project in xcode.

Open Project in Xcode

• Open Xcode.
• Select Open another Project.
• Open the iOS directory within your app.
• Now, click on Done button.

Change Bundle Name

• Select your project file icon in Group and files panel.
• Then Select Target -> Info Tab.
• At last change Bundle Name.

Change Bundle Identifier.

Bundle Id is a unique Identifier of your of app on iOS and MacOS. iOS and MacOS use it to recognise updates to your app. The identifier must be unique for your app.

• Select your project file icon in Group and files panel.
• Select General Tab.
• After Select General tab you can see the details of your application.
• In Identity section, rename your Bundle identifier.

Change App Icons

• see How to Generate App Icons?
• In Group and files panel find “Assets.xcassets” folder.
• In Assets.xcassets folder replace AppIcon.

Change Admob App Id

• Open Xcode,Select the Info.plist from the file Manager.
• Change the GADApplicationIdentifier value.

                    
    <key>GADApplicationIdentifier</key>
        <string>Add your Admob appId</string>
    
    

Open Xcode and then open GoogleService-Info.plist file.

Open Xcode and then open Info.plist file.

                    
    <key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
            <key>CFBundleURLSchemes</key>
            <array>
                < TODO Replace this value:>
                < Copied from GoogleService-Info.plist key REVERSED_CLIENT_ID>
                <string>"Enter your REVERSED_CLIENT_ID"</string>
            </array>
        </dict>
    </array>
    
    

Open Xcode and then open Info.plist file and Change Permission App name.

Flutter Configuration

Setup AdMob

• For AdMob setup, you just need to change the app id, banner id and interstitial id.
• For that, you have to create a firebase account and create a new application in AdMob. and then create two ad unit.

1. Banner Ad

2. Interstitial Ad

• Refer Link


• Now come back to Application source code.
• Open lib/utils/AdConfigurationConstants.dart file.
• And replace mAdMobAppId, mAdMobBannerId, mAdMobRewardedId, mAdMobInterstitialId ids
• Now run the application. your ads are now live.

Setup Facebook Audience ad

• For FacebookAudiunce ad, you need to change the faceBookBannerPlacementId, faceBookInterstitialPlacementId
• Now come back to Application source code.
• Open lib/utils/AdConfigurationConstants.dart file.
• And replace faceBookBannerPlacementId, faceBookInterstitialPlacementId, ids
• Now run the application. your ads are now live.

Change disableAdMob=false value

Change disableAdMob=true value

Change isAds=isFacebookAds value

Change isAds=isGoolgeAds value

Add Free Photos

• Go to Firebase Console in your browser and open your project
• under storage tab upload images(Free Photos)
• Click on the image name you will see another panel right site
• Click on image name and copy your image name

• Open your flutter project in android studio
• Under lib -> utils -> Images.dart file add image link as shown below

• Copy and Paste image variables under lib-> components-> FreePhotosHorizontalListWidget.dart file


• Copy and Paste image variables under lib-> screens-> ViewAllFreePhotos.dart file

Flutter SDK Not Available

Download the SDK and point the SDK folder path in your future projects.

There are different sources you can try

1. You can clone it from the Github Repository
2. Download SDK zip file + extract it after downloading
3. You can also Download any version(including older) from here (For Mac, Windows, Linux)

Use the SDK path in your future projects

Dependency Error

 Running "flutter pub upgrade" in photo_editor...
The current Flutter SDK version is 1.17.5.
Because photo_editor depends on flutter_svg >=0.18.0 which requires Flutter SDK version
>=1.18.0-6.0.pre <2.0.0, version solving failed. pub upgrade failed (1; Because
photo_editor depends on flutter_svg >=0.18.0 which requires Flutter SDK version
>=1.18.0-6.0.pre <2.0.0, version solving failed.) Process finished with exit code 1
Error Possibilities:
Generally, this error occurs when 

flutter pub get

Unsupported gradle version 7.*.*

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