PicFly

A lightweight, efficient image loading library for Android

Features • Installation • Usage • Advanced • License

📱 Overview

PicFly is a modern image loading library for Android that provides a simple and fluent API for loading images from URLs into ImageViews. It's designed to be lightweight yet powerful, with support for caching, transformations, and more.

Sample image loaded with PicFly

✨ Features

🚀 Simple API	Fluent interface with method chaining for easy use
💾 Memory Caching	Efficient caching using LruCache
💿 Disk Caching	Persistent caching between app sessions
🖼️ Placeholder Support	Show placeholder images while loading
⚠️ Error Handling	Display error images when loading fails
🔄 Image Transformations	• 🌫️ Blur with customizable radius • ⚪ Grayscale • 🔄 Rotate • ⭕ Circle crop with optional border • 🔘 Rounded corners with customizable radius • 🎨 Color filter • ☀️ Brightness adjustment • 🛠️ Support for custom transformations
📏 Image Resizing	Resize images to specific dimensions
📜 RecyclerView Support	Optimized for efficient image loading in RecyclerViews
⏱️ Preloading	Preload images for smoother scrolling
🔄 Kotlin & Java Support	Works seamlessly with both languages

📦 Installation

Gradle

Add the JitPack repository to your project-level build.gradle:

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

Add the dependency to your app-level build.gradle:

dependencies {
    implementation 'com.github.tuhinx:picfly:2.0.1'
}

Kotlin DSL

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        mavenCentral()
        maven { url = uri("https://jitpack.io") }
    }
}

dependencies {
    implementation("com.github.tuhinx:picfly:2.0.1")
}

🚀 Usage

Basic Usage

Java	Kotlin
PicFly.get(context) .load("https://example.com/image.jpg") .into(imageView);	PicFly.get(context) .load("https://example.com/image.jpg") .into(imageView)

With Placeholder and Error Handling

Java	Kotlin
PicFly.get(context) .load("https://example.com/image.jpg") .placeholder(R.drawable.placeholder) .error(R.drawable.error) .into(imageView);	PicFly.get(context) .load("https://example.com/image.jpg") .placeholder(R.drawable.placeholder) .error(R.drawable.error) .into(imageView)

Image Transformations

Java

Kotlin

// Grayscale PicFly.get(context) .load("https://example.com/image.jpg") .grayscale() .into(imageView); // Blur PicFly.get(context) .load("https://example.com/image.jpg") .blur(15f) // Radius: 0-25 .into(imageView); // Circle Crop PicFly.get(context) .load("https://example.com/image.jpg") .circleCrop() .into(imageView); // Circle Crop with Border PicFly.get(context) .load("https://example.com/image.jpg") .circleCrop(Color.BLACK, 4f) // Border color, width .into(imageView); // Rounded Corners PicFly.get(context) .load("https://example.com/image.jpg") .roundedCorners(25f) // Radius .into(imageView); // Color Filter PicFly.get(context) .load("https://example.com/image.jpg") .colorFilter(Color.RED) .into(imageView); // Rotate PicFly.get(context) .load("https://example.com/image.jpg") .rotate(90f) // Degrees .into(imageView); // Brightness PicFly.get(context) .load("https://example.com/image.jpg") .brightness(0.3f) // -1.0f to 1.0f .into(imageView);

// Grayscale PicFly.get(context) .load("https://example.com/image.jpg") .grayscale() .into(imageView) // Blur PicFly.get(context) .load("https://example.com/image.jpg") .blur(15f) // Radius: 0-25 .into(imageView) // Circle Crop PicFly.get(context) .load("https://example.com/image.jpg") .circleCrop() .into(imageView) // Circle Crop with Border PicFly.get(context) .load("https://example.com/image.jpg") .circleCrop(Color.BLACK, 4f) // Border color, width .into(imageView) // Rounded Corners PicFly.get(context) .load("https://example.com/image.jpg") .roundedCorners(25f) // Radius .into(imageView) // Color Filter PicFly.get(context) .load("https://example.com/image.jpg") .colorFilter(Color.RED) .into(imageView) // Rotate PicFly.get(context) .load("https://example.com/image.jpg") .rotate(90f) // Degrees .into(imageView) // Brightness PicFly.get(context) .load("https://example.com/image.jpg") .brightness(0.3f) // -1.0f to 1.0f .into(imageView)

🔍 Advanced Usage

Image Resizing

PicFly.get(context)
    .load("https://example.com/image.jpg")
    .resize(300, 300)
    .into(imageView);

RecyclerView Integration

PicFly.get(context)
    .load("https://example.com/image.jpg")
    .into(imageView, viewHolder);

Preloading Images

PicFly.get(context)
    .load("https://example.com/image.jpg")
    .preload();

Cache Management

// Clear memory cache
PicFly.get(context).clearMemoryCache();

// Clear disk cache
PicFly.get(context).clearDiskCache();

// Clear all caches
PicFly.get(context).clearAllCaches();

RecyclerView Preloading

public class MyAdapter extends RecyclerView.Adapter<MyViewHolder>
    implements RecyclerViewPreloader.PreloadModelProvider<MyItem> {

    private List<MyItem> items;

    @Override
    public List<String> getPreloadUrls(@NonNull MyItem item) {
        return Collections.singletonList(item.getImageUrl());
    }

    @Override
    public int[] getPreloadDimensions(@NonNull MyItem item) {
        return new int[]{300, 300}; // Width, Height
    }
}

// In your activity/fragment:
RecyclerView recyclerView = findViewById(R.id.recyclerView);
MyAdapter adapter = new MyAdapter();
recyclerView.setAdapter(adapter);

// Add the preloader
RecyclerViewPreloader<MyItem> preloader = PicFly.get(this)
    .getRecyclerViewPreloader(adapter);
recyclerView.addOnScrollListener(preloader);

Custom Transformations

public class CustomTransformation implements Transformation {
    @Override
    public Bitmap transform(Bitmap source) {
        // Apply your transformation here
        return transformedBitmap;
    }

    @Override
    public String key() {
        // Return a unique key for this transformation
        return "custom_transformation";
    }
}

// Usage
PicFly.get(context)
    .load("https://example.com/image.jpg")
    .transform(new CustomTransformation())
    .into(imageView);

📄 License

PicFly is released under the MIT License. See the LICENSE file for details.

MIT License

MIT License

Copyright (c) 2025 PicFly

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
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Made with ❤️ by PicFly