How to create custom code in FlutterFlow?

Step 1: Create a New FlutterFlow Project

To begin with, visit the FlutterFlow homepage and click on the "Get Started" button. If you're not logged in, you'll be prompted to do so or create a new account. After sign-in, create a new FlutterFlow project by clicking on the "New Project" button. From there, fill in your project's name and description, then choose a starting template or start from scratch.

Step 2: Navigate to the Actions Panel

Inside your new project, locate the "Actions" panel on the right side of the screen. This panel is where we will define custom actions for on-screen elements.

Step 3: Add and Select an Element

Before we start coding, we need to have an element to which we'll attach the custom code. Elements in FlutterFlow can be screens, buttons, icons, etc. Add an element to your project and select it. Once the element is selected, its properties will appear in the "Properties" panel.

Step 4: Add a Custom Action

After selecting the element, move to the "Actions" panel. Here, you'll see a dropdown menu labeled "onPressed". This dropdown allows you to associate an action with your selected element when it's pressed. Click the dropdown and select "Tell FlutterFlow to add your own code here".

Step 5: Write Custom Dart Code

Once you've selected the option to add your own code, a text box will appear. This box is your canvas to write Dart code, which is the primary language used in Flutter development. Write your custom code in this box. Ensure that your code is valid Dart syntax to avoid errors.

Step 6: Save and Preview the Custom Action

After writing your Dart code, click on the "Save" button located below the code editor box. This way, your custom code will be saved to the specified action. To make sure your code works correctly, click on the preview button located at the top of the FlutterFlow interface.

Step 7: Edit or Remove the Custom Action

If you need to change your custom code, select the element whose code you want to edit and open the "Actions" panel again. Your previously-entered code will be available for editing there. If you want to remove the custom action, click the 'x' button located in the top-right corner of the custom code text box.

Step 8: Export the Project

Finally, after you've added all the required custom actions, proceed to export your project. To do this, click "Export" in the top-right corner of the FlutterFlow interface, select where you want your code to be exported to such as GitHub, and finally click "Export". After the export process finishes, your custom actions will be included in the exported Flutter code.

Take note: FlutterFlow provides a visual coding interface and is not a full Dart code editor. That means there are some limitations to the complexity of the custom code you write within the FlutterFlow interface.

Practice your Dart programming and understand the structure of the Flutter Framework to harness the power of FlutterFlow fully. This requires some learning curve, but with consistent practice, you can become an expert at integrating custom actions into your FlutterFlow projects.