Object-Based Search in Flutter: Build AI-Powered Gallery App

Install the Flutter SDK on Mac, download the correct zip for Intel or M1/M2/M3, extract to a development folder, add Flutter to your path, and verify with flutter version.

Download and install Android Studio, accept the licenses, and install the Flutter plugin. Restart the IDE and use the Flutter project button to create Flutter apps.

Install and set up Xcode on macOS to build iOS applications with Flutter. Download Xcode from the App Store, accept terms, configure command line tools, and integrate with Android Studio.

Create a new flutter project in android studio, configure kotlin for android and swift for iOS, then run the default counter app on iOS simulator and android emulator.

Create and launch an Android emulator in the device manager, select Pixel 7 with Android 14, download and finish, install the starter app inside the emulator, and run it.

Install flutter on windows by downloading the flutter sdk from flutter.dev, unzip it, place it in the C drive, set the system path, and run flutter doctor to verify.

Install Android Studio to develop Flutter apps, configure Flutter with Dart plugins, then run flutter doctor, install Android SDK command line tools, and accept licenses to complete setup.

Create an Android virtual device in Android Studio, select a device like Pixel 7 Pro, install Android 14, and launch the emulator to test apps.

Create a new Flutter project, install the photo gallery library from pub.dev, and prepare iOS and Android permissions to access device gallery images for circle to search.

Learn to fetch user gallery albums in a Flutter app using the photo gallery library by creating a gallery home stateful widget and loading albums in initState.

Learn dynamic permission handling in Flutter using the permission_handler package to request photos, storage, and videos permissions on Android and iOS, and load user gallery albums.

Design and implement the gallery app gui in Flutter by adding an app bar and a three-column grid that displays album names and image counts.

Display album thumbnails with a fade‑in image using a transparent placeholder and the photo gallery library's album thumbnail provider, then show the album name and image count beneath each thumbnail.

Test the Flutter gallery app on Android using an emulator, observe album names printed in Logcat, and verify thumbnails for each album.

Format album thumbnails in a Flutter grid with uniform sizes, display album names and image counts beneath, and refine spacing, aspect ratio, and alignment for a polished user interface.

Display each album's item count beneath its name, adjust the grid with a padded container, and round album thumbnails using a clip widget with a circular border radius.

Implement an image view page in a Flutter gallery app by tapping an image in the album page to open a viewer screen that shows the image using medium object.

Display the selected image in a Flutter viewer by replacing the placeholder with a scaffold and app bar that show the image name and load the image file.

Implement a circle-to-search feature by drawing a circle on an image with the signature widget in Flutter. Overlay a transparent drawing surface using a stack for region-based search.

Position the image and signature widgets with a Flutter position widget using media query for exact left, top, width, height, then crop circle area for the circle to search feature.

Use flutter to capture user gestures with a listener around a signature widget, detecting on pointer down and up. Crop image when finger lifts to power circle-to-search feature.

Learn to extract the drawn points from a signature widget using a global key and signature state, compute the top-left and bottom-right corners, and crop the image in Flutter.

Crop the drawn region in a Flutter app by converting the image to the image library format, decoding bytes, and using copyCrop with top-left and bottom-right coordinates.

Display cropped portions of an image in a Flutter app by conditionally showing cropped bytes via image.memory, converting with img.encode_png from cropped data, and falling back to the original image.

Learn to scale signature widget points to image dimensions and crop the correct image region in a Flutter gallery app, using points map and width and height scaling.

learn to display the original image while hiding the crop, indicate the drawn shape with a rectangle later, and reset state to prepare the crop for searching items in Flutter.

crop the image portion, securely upload it to obtain a URL, pass that URL to Google Lens to show similar items in the Flutter app, and delete the image afterward.

Upload the cropped image to a free image hosting service via its API, obtain the display URL, and use that URL with Google Lens in your Flutter app.

Build an API request in Flutter by adding the http library, creating a URI with the API key, and uploading a cropped image using a multipart post.

Learn to convert a cropped Flutter image to bytes, save as a temporary file, and upload via a multi-part API request with API key to retrieve the image URL.

Create a lens screen in flutter that opens a search URL in an in-app webview, wiring a stateful lens view and passing the URL for results.

Add an app bar to the lens view screen by using a stack to overlay the app web view, hiding the header, and including a back button.

Enable and disable the circle to search feature in the Flutter gallery app by tapping an app bar icon or long-pressing the image, controlled by an isEnabled boolean and setState.

Enable and disable the circle to search feature in flutter with a long press by wrapping the scaffold body in an inkwell and adding a long press listener.

Add a frame overlay in the Flutter gallery app by displaying frame.png over the drawn area once the crop is complete and the cropped image is not null.

Learn to position a rectangle on an image in flutter by computing left top and right bottom coordinates, adapting for scaling from a signature pad, and cropping the image accordingly.

Apply a flutter animate scale animation and tint color to a drawn rectangle on an image, update pubspec.yaml, install the library, and verify the rectangle appears smoothly.

Draw a rectangle on the cropped image using unscaled signature points in a Flutter stack, and configure pubspec.yaml assets to animate the frame with the flutter animate package.