Tinder Style Swipe Cards in Flutter

Tinder Style Swipe Cards in Flutter: A Step-by-Step Guide

Swipeable card layouts, popularized by dating apps like Tinder, provide an interactive and visually appealing user experience. In this tutorial, we’ll create Tinder-style swipe cards in Flutter using the scrumlab_flutter_tindercard package. This package simplifies the process, making it easy to implement swipeable cards with minimal effort.

Let’s dive into the details!

Table of Contents

1. Introduction to Tinder-Style Cards
2. Setting Up Your Flutter Project
3. Installing scrumlab_flutter_tindercard
4. Implementing Swipe Cards
   • Setting Up the Card Controller
   • Building the Swipeable Card Layout
5. Customizing the Card Behavior
6. Best Practices for Tinder-Style Cards
7. Conclusion

1. Introduction to Tinder-Style Cards

Swipeable cards are a great way to:

• Display content interactively.
• Engage users with swipe gestures for actions like “like” or “dislike.”
• Create dynamic and fluid user experiences.

By leveraging the scrumlab_flutter_tindercard package, you can implement this feature efficiently.

2. Setting Up Your Flutter Project

Ensure you have Flutter installed and set up. Create a new project using the following command:

flutter create tinder_swipe_cards
cd tinder_swipe_cards

Open the project in your favorite IDE.

3. Installing scrumlab_flutter_tindercard

Add the package to your project dependencies by updating the pubspec.yaml file:

dependencies:
  flutter:
    sdk: flutter
  scrumlab_flutter_tindercard: ^0.0.1

Run the following command to install the package:

bashCopy codeflutter pub get

4. Implementing Swipe Cards

Now, let’s dive into the code to build Tinder-style cards.

Step 1: Setting Up the Card Controller

The CardController is essential for managing swipe gestures and tracking the current card index. You’ll define it in your State class.

CardController controller;

Step 2: Building the Swipeable Card Layout

Below is the complete implementation of the SwipeCardExample widget:

import 'package:flutter/material.dart';
import 'package:scrumlab_flutter_tindercard/scrumlab_flutter_tindercard.dart';

class SwipeCardExample extends StatefulWidget {
  const SwipeCardExample({Key? key}) : super(key: key);

  @override
  State<SwipeCardExample> createState() => _SwipeCardExampleState();
}

class _SwipeCardExampleState extends State<SwipeCardExample> {
  List<String> tinderImages = [
    'assets/img_1.png',
    'assets/img_2.png',
    'assets/img_3.png',
    'assets/img_4.png',
    'assets/img_5.png',
  ];

  @override
  Widget build(BuildContext context) {
    CardController controller;

    return Scaffold(
      body: Center(
        child: SizedBox(
          height: MediaQuery.of(context).size.height * 0.6,
          child: TinderSwapCard(
            swipeUp: true,
            swipeDown: true,
            orientation: AmassOrientation.bottom,
            totalNum: tinderImages.length,
            stackNum: 4,
            swipeEdge: 4.0,
            maxWidth: MediaQuery.of(context).size.width * 0.9,
            maxHeight: MediaQuery.of(context).size.width * 0.9,
            minWidth: MediaQuery.of(context).size.width * 0.8,
            minHeight: MediaQuery.of(context).size.width * 0.8,
            cardBuilder: (context, index) => Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20.0),
              ),
              clipBehavior: Clip.antiAliasWithSaveLayer,
              child: Image.asset(tinderImages[index], fit: BoxFit.cover),
            ),
            cardController: controller = CardController(),
            swipeUpdateCallback: (DragUpdateDetails details, Alignment align) {
              if (align.x < 0) {
                print("Swiping Left");
              } else if (align.x > 0) {
                print("Swiping Right");
              }
            },
            swipeCompleteCallback:
                (CardSwipeOrientation orientation, int index) {
              print("Card $index swiped $orientation");
            },
          ),
        ),
      ),
    );
  }
}

5. Customizing the Card Behavior

The scrumlab_flutter_tindercard package offers a variety of options for customizing card behavior:

1. Setting Orientation

Use AmassOrientation to control swipe direction:

• AmassOrientation.bottom: Swipes from bottom to top.
• AmassOrientation.top: Swipes from top to bottom.

2. Stack Number

Control how many cards are visible in the stack:

dartCopy codestackNum: 4

3. Swipe Callbacks

Customize actions on swipe updates or completions:

swipeUpdateCallback: (DragUpdateDetails details, Alignment align) {
  // Add custom swipe logic here
},

swipeCompleteCallback: (CardSwipeOrientation orientation, int index) {
  // Execute actions based on swipe direction or card index
},

6. Best Practices for Tinder-Style Cards

• Optimize Images: Use optimized images to reduce app size.
• Gesture Feedback: Provide visual or haptic feedback during swipes.
• Track Swipes: Log or store swipe results for user data analytics.
• Error Handling: Handle empty or invalid image paths gracefully.

7. Conclusion

Creating Tinder-style swipe cards in Flutter is simple and fun using the scrumlab_flutter_tindercard package. With swipe gestures, you can add an interactive element to your app that users will love. Customize the behavior and visuals to align with your app’s theme and purpose.

Have you tried creating swipeable cards in Flutter? Share your experiences in the comments, and stay tuned to Widget Wisdom for more exciting Flutter tutorials!

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