pulling_manager 0.1.6

PullingManager

A flexible and battery-efficient solution for handling real-time data updates in Flutter applications.

Features

• Customizable Polling Frequencies
• Battery-efficient with automatic lifecycle management
• Smart request handling to prevent overlapping
• Context-aware frequency adjustments
• Simple, flexible API

Getting Started

Add the package to your pubspec.yaml:

dependencies:
  pulling_manager: ^0.1.6

Why PullingManager?

PullingManager was built to solve real-world needs in production apps. It provides:

• Dynamic Control: Change polling frequency based on app state or user context
• Resource Efficiency: Automatically handles lifecycle events to conserve battery
• Clean API: Simple to implement and maintain
• Built on RxDart: Leverages powerful reactive programming concepts

Customizable Polling Frequencies

Explanation

Customizable polling frequencies allow you to define how often specific tasks (like data refreshes or updates) occur by providing a list of predefined time intervals. This method ensures flexibility and efficiency, as different parts of an application can operate with varying refresh rates based on their needs.

Key Concepts:

1. Pass a List of Frequencies: Provide a list of intervals (in seconds, milliseconds, etc.) to specify how often a task should execute.
2. Context-Specific Updates: Tie each frequency to a particular application state, page, or condition for dynamic control.

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Example Usage

Here is an example of how to use the PullingManager class in a Dart application:

void main() {
  // Create an instance of PullingManager
  final pullingManager = PullingManager<String>(
    fetchData: () async {
      // Simulate a network call or data fetch
      print("Fetching data...");
      await Future.delayed(Duration(seconds: 1));
      return "Data fetched successfully";
    },
    customDurations: [
      Duration(seconds: 15),  
      Duration(seconds: 10),  
      Duration(seconds: 5),   
      Duration(seconds: 2),   
      Duration(seconds: 1),  
    ],
    initialFrequency: PollingFrequency.medium,
    immediateFirstFetch: true,
    attachToLifecycle: true,
  );

  // Listen to the data stream
  pullingManager.dataStream.listen((data) {
    print("Received: $data");
  });

  // Change polling frequency
  pullingManager.setFrequency(PollingFrequency.high);

  // Trigger a manual fetch
  pullingManager.triggerManualFetch();

  // Pause and resume polling based on user interaction or app state
  pullingManager.pause();
  Future.delayed(Duration(seconds: 5), () {
    pullingManager.resume();
  });

  // Dispose the manager when no longer needed
  Future.delayed(Duration(seconds: 30), () {
    pullingManager.dispose();
  });
}

Explanation:

• fetchData: A function that performs the actual data fetching.
• customDurations: Override the default durations for polling frequencies.
• setFrequency: Adjust the polling frequency dynamically.
• pause/resume: Temporarily halt and restart polling.
• dispose: Clean up resources when polling is no longer required.

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Benefits

• Efficiency: Reduces unnecessary system resource usage by avoiding constant updates.
• Flexibility: Allows different components of the app to operate independently with appropriate refresh rates.
• Scalability: Easy to modify or expand polling frequencies as the application evolves.

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Use Cases

1. Real-Time Dashboards: Frequently update critical components (e.g., every second) while less critical ones refresh periodically.
2. IoT Applications: Poll sensors at different rates depending on their importance or activity.
3. Data-Heavy Applications: Optimize network calls by adjusting frequencies dynamically based on user interaction.

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Implementation Tips

• Use a Polling Manager to centralize and manage polling logic.
• Store frequencies in a configuration file for easy updates.
• Dynamically adjust polling rates based on user activity or system performance.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License

Copyright (c) 2024 Idan Ayalon

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in all
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