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Quick Overview
Picasso is a powerful image downloading and caching library for Android. It simplifies the process of loading images from various sources, including network, local storage, and resources, while efficiently managing memory usage and image transformations.
Pros
- Easy to use with a fluent API
- Automatic memory and disk caching
- Supports image transformations and placeholders
- Handles complex image loading scenarios with minimal code
Cons
- Limited to Android platform
- May be overkill for simple image loading tasks
- Lacks some advanced features found in newer libraries
- Not actively maintained (last release was in 2019)
Code Examples
Loading an image from a URL into an ImageView:
Picasso.get()
.load("https://example.com/image.jpg")
.into(imageView);
Loading an image with a placeholder and error image:
Picasso.get()
.load("https://example.com/image.jpg")
.placeholder(R.drawable.placeholder)
.error(R.drawable.error)
.into(imageView);
Applying transformations to an image:
Picasso.get()
.load("https://example.com/image.jpg")
.resize(250, 250)
.centerCrop()
.rotate(90)
.into(imageView);
Getting Started
- Add Picasso to your project's
build.gradle
file:
dependencies {
implementation 'com.squareup.picasso:picasso:2.71828'
}
- In your Android application, use Picasso to load images:
import com.squareup.picasso.Picasso;
// In your Activity or Fragment
ImageView imageView = findViewById(R.id.imageView);
Picasso.get()
.load("https://example.com/image.jpg")
.into(imageView);
That's it! Picasso will handle downloading, caching, and displaying the image for you.
Competitor Comparisons
An image loading and caching library for Android focused on smooth scrolling
Pros of Glide
- More efficient memory usage and better performance, especially with large images
- Supports GIF and video playback
- More extensive customization options and transformations
Cons of Glide
- Larger library size compared to Picasso
- Steeper learning curve due to more complex API
- Requires more configuration for optimal performance
Code Comparison
Picasso:
Picasso.get()
.load("https://example.com/image.jpg")
.into(imageView);
Glide:
Glide.with(context)
.load("https://example.com/image.jpg")
.into(imageView);
Both libraries offer similar basic usage, but Glide provides more options for customization and optimization. Picasso is simpler to use out of the box, while Glide requires more configuration for optimal performance.
Glide excels in memory management and supports a wider range of image formats, including GIF and video. However, this comes at the cost of a larger library size and a more complex API.
Picasso, on the other hand, is lighter and easier to implement, making it a good choice for simpler projects or those with limited resources. It may not perform as well as Glide for large images or complex transformations, but it's generally sufficient for basic image loading needs.
An Android library for managing images and the memory they use.
Pros of Fresco
- Advanced memory management with customizable memory caches
- Support for progressive JPEG loading and streaming
- Built-in support for animated GIFs and WebP images
Cons of Fresco
- Larger library size compared to Picasso
- Steeper learning curve due to more complex API
- Less seamless integration with other libraries
Code Comparison
Picasso:
Picasso.get()
.load("https://example.com/image.jpg")
.into(imageView);
Fresco:
Uri uri = Uri.parse("https://example.com/image.jpg");
draweeView.setImageURI(uri);
Both Picasso and Fresco are popular image loading libraries for Android, but they have different strengths and use cases. Picasso is known for its simplicity and ease of use, making it a great choice for smaller projects or developers who prefer a straightforward API. Fresco, on the other hand, offers more advanced features and better performance for complex image loading scenarios, particularly when dealing with large images or memory-constrained devices.
While Picasso's API is more intuitive and requires less setup, Fresco provides greater control over image loading and caching processes. The code comparison shows that Picasso's syntax is slightly more concise, but Fresco's approach allows for more customization through its DraweeView component.
Image loading for Android and Compose Multiplatform.
Pros of Coil
- Written in Kotlin with coroutines support, offering better performance and modern language features
- Smaller library size, reducing app's overall footprint
- Built-in memory and disk caching, with customizable cache sizes
Cons of Coil
- Newer library with potentially fewer community resources and third-party integrations
- Limited to Android platform, while Picasso supports Java SE
Code Comparison
Coil:
imageView.load("https://example.com/image.jpg") {
crossfade(true)
placeholder(R.drawable.placeholder)
transformations(CircleCropTransformation())
}
Picasso:
Picasso.get()
.load("https://example.com/image.jpg")
.placeholder(R.drawable.placeholder)
.transform(new CircleTransform())
.into(imageView);
Both libraries offer similar functionality for loading images, but Coil's API is more concise and takes advantage of Kotlin's language features. Picasso uses a builder pattern, while Coil utilizes extension functions and trailing lambdas for a more streamlined syntax.
Powerful and flexible library for loading, caching and displaying images on Android.
Pros of Android-Universal-Image-Loader
- More customizable with extensive configuration options
- Supports a wider range of image sources (including file system and assets)
- Offers more control over caching mechanisms
Cons of Android-Universal-Image-Loader
- Less actively maintained compared to Picasso
- More complex setup and usage
- Larger library size, potentially impacting app size
Code Comparison
Android-Universal-Image-Loader:
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.displayImage(imageUri, imageView, options);
Picasso:
Picasso.get().load(imageUrl).into(imageView);
Android-Universal-Image-Loader requires more setup and configuration, while Picasso offers a simpler, more straightforward API. Picasso's fluent interface makes it easier to chain multiple operations, such as resizing or transforming images.
Both libraries are powerful tools for image loading in Android applications, but they cater to different needs. Android-Universal-Image-Loader offers more flexibility and control, making it suitable for complex use cases. Picasso, on the other hand, provides a simpler, more streamlined approach that's easier to implement and maintain, making it a popular choice for many developers.
An Android transformation library providing a variety of image transformations for Glide.
Pros of glide-transformations
- Offers a wide variety of image transformations and filters
- Seamlessly integrates with Glide, a popular image loading library
- Provides easy-to-use, chainable transformations for complex effects
Cons of glide-transformations
- Limited to use with Glide, while Picasso is a standalone library
- May have a slightly larger footprint due to additional transformation options
- Requires more setup and configuration compared to Picasso's simpler approach
Code Comparison
glide-transformations:
Glide.with(context)
.load(url)
.transform(new BlurTransformation(25), new RoundedCornersTransformation(25, 0))
.into(imageView);
Picasso:
Picasso.get()
.load(url)
.transform(new BlurTransformation(25))
.into(imageView);
Both libraries offer image loading and transformation capabilities, but glide-transformations provides more extensive options for image manipulation. Picasso, on the other hand, focuses on simplicity and ease of use. The choice between the two depends on the specific requirements of your project and the level of image transformation complexity needed.
A circular ImageView for Android
Pros of CircleImageView
- Specialized for creating circular images, which is its primary focus
- Lightweight and easy to implement for circular image views
- Supports border and shadow customization out of the box
Cons of CircleImageView
- Limited to circular image views only, less versatile than Picasso
- Doesn't handle image loading or caching, requiring additional libraries
- Less actively maintained compared to Picasso
Code Comparison
CircleImageView:
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="96dp"
android:layout_height="96dp"
android:src="@drawable/profile"
app:civ_border_width="2dp"
app:civ_border_color="#FF000000"/>
Picasso:
Picasso.get()
.load("https://example.com/image.jpg")
.transform(new CircleTransform())
.into(imageView);
CircleImageView is straightforward for circular images but lacks image loading capabilities. Picasso offers more flexibility and features for image loading and manipulation, including the ability to create circular images through transformations.
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Picasso
A powerful image downloading and caching library for Android
For more information please see the website
Download
Download the latest AAR from Maven Central or grab via Gradle:
implementation 'com.squareup.picasso:picasso:2.8'
or Maven:
<dependency>
<groupId>com.squareup.picasso</groupId>
<artifactId>picasso</artifactId>
<version>2.8</version>
</dependency>
Snapshots of the development version are available in Sonatype's snapshots
repository.
Picasso requires at minimum Java 8 and API 21.
ProGuard
If you are using ProGuard you might need to add OkHttp's rules: https://github.com/square/okhttp/#r8--proguard
License
Copyright 2013 Square, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Top Related Projects
An image loading and caching library for Android focused on smooth scrolling
An Android library for managing images and the memory they use.
Image loading for Android and Compose Multiplatform.
Powerful and flexible library for loading, caching and displaying images on Android.
An Android transformation library providing a variety of image transformations for Glide.
A circular ImageView for Android
Convert designs to code with AI
Introducing Visual Copilot: A new AI model to turn Figma designs to high quality code using your components.
Try Visual Copilot