Gain insights into building a Todo app with Flutter, Firebase, AdMob, and InAppPurchases. Delve into UI design, CRUD functionality, and app monetization. Publish to Google Play Store.

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This course is designed to guide you through the process of building your first app using Flutter, a popular cross-platform framework for mobile application development. The course assumes that you are familiar with the object-oriented programming paradigm, which is a fundamental programming approach used in many modern programming languages, including Dart (the language used in Flutter).

In this course, you will learn how to build a Todo app, which will have CRUD functionality. You will also learn how to design the user interface of the app using Flutter widgets and handle user input and data storage using Firebase, a popular backend-as-a-service platform. Moreover, you understand how to monetize your app by integrating AdMob and InAppPurchases. 

By the end of the course, you will have a working Todo app that you can publish on the Google Play Store. You will also have a solid foundation in using Flutter, Firebase, AdMob, and InAppPurchases to build and monetize your mobile applications.

Build and Publish Your First Mobile App Using Flutter

First, we need to enable `multidex` in our project.

## Configure multidex
Since some Firebase SDKs (particularly Firestore) include a significant number of classes, we may exceed the Android build system's 64K method limit and receive an error while merging dex archives. (The maximum amount of method references in a `.dex` file is 64K.)

If we see this error, it is recommended that we enable `multidex` for Android.

If our app only targets Android 21 or higher (`minSdkVersion`), `multidex` is already enabled by default, and the multidex support library isn't required.

If our `minSdkVersion` is 20 or lower, we'll need to use the multidex support library and make the following changes to our app project:

Open the `/android/app/build.gradle` file. Under `dependencies`, add the `multidex` module and enable it within the `defaultConfig` key:





First, we need to enable `multidex` in our project.

# Configure multidex
Since some Firebase SDKs (particularly Firestore) include a significant number of classes, we may exceed the Android build system's 64K method limit and receive an error while merging dex archives. (The maximum amount of method references in a `.dex` file is 64K.)

If we see this error, it is recommended that we enable `multidex` for Android.

If our app only targets Android 21 or higher (`minSdkVersion`), `multidex` is already enabled by default, and the multidex support library isn't required.

If our `minSdkVersion` is 20 or lower, we'll need to use the multidex support library and make the following changes to our app project:

Open the `/android/app/build.gradle` file. Under `dependencies`, add the `multidex` module and enable it within the `defaultConfig` key:





Learn how to add required Firebase packages inside our Flutter project.

Introduction to Course

Flutter Basics

Common Widgets

Firebase Setup

State Management

AdMob and InAppPurchase

Todo App Models

Todo UI Screens

Publishing to the Play Store

Appendix

Adding Required Packages

Configure multidex