sketch

KO | EN

gitlite — search

#javascript #python #hacktoberfest #react #ai #typescript #llm #go #golang #android #machine-learning #rust #deep-learning #linux

(★ 2,400)

Image loading library designed for Compose Multiplatform and Android View. Supports loading Image, GIF, SVG, Video thumbnails from the network, local, resources, and photo albums.

sketch 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

# ![logo_image] Sketch Image Loader

![Platform][platform_image]
[![License][license_image]][license_link]
[![version_icon]][version_link]
![QQ Group][qq_group_image]

Translations: [简体中文](README.zh.md)

Sketch is an image loading library specially designed for Compose Multiplatform and Android View. It
has the following features:

* `Multiple sources`: Supports loading images from multiple sources such as http, file,
  compose resource, android asset/content/resource, etc.
* `Powerful functions`: Supports three-level caching, automatically cancels requests, automatically
  adjusts image size, automatically rotates images according to Exif Orientation, etc.
* `Rich functions`: Supports Animated image, SVG images, Base64 images, and video frames
* `Easy to expand`: Supports expansion of various aspects such as caching, decoding, transformation,
  transition, placeholder, etc.
* `Extended functions`: Practical extensions such as pausing downloads when cellular data is
  provided, pausing loading during list scrolling, image type badges, download progress indicators,
  etc.
* `Modern`: Completely based on Kotlin and Kotlin coroutine design

## Sample App

* For Android, iOS, desktop version, and web deployable packages, please go to
  the [Releases](https://github.com/panpf/sketch/releases) page to download.
* Web example：https://panpf.github.io/sketch/app

## Install

`Published to mavenCentral`

`${LAST_VERSION}`: [![Download][version_icon]][version_link] (Not included 'v')

### Compose Multiplatform:

Import the required Compose and network modules:

```kotlin
// Provides the core functions of Sketch as well as singletons and extension 
// functions that rely on singleton implementations
implementation("io.github.panpf.sketch4:sketch-compose:${LAST_VERSION}")

// Provides the ability to load network images
implementation("io.github.panpf.sketch4:sketch-http:${LAST_VERSION}")
```

> [!IMPORTANT]
> To improve the performance of compose, please copy [compose_compiler_config.conf] under
> the `sketch-core` module file to your project and configure it according to
> the [Compose Stability Configuration][stability_configuration] documentation

### Android View:

Import the required View and network modules:

```kotlin
// Provides the core functions of Sketch as well as singletons and extension 
// functions that rely on singleton implementations
implementation("io.github.panpf.sketch4:sketch-view:${LAST_VERSION}")

// Provides the ability to load network images
implementation("io.github.panpf.sketch4:sketch-http:${LAST_VERSION}")
```

### Optional modules:

```kotlin
// Use Android or Skia's built-in decoder to decode gif animations and play them
implementation("io.github.panpf.sketch4:sketch-animated-gif:${LAST_VERSION}")

// [Android only] Use the GifDrawable of the android-gif-drawable library to decode and play gif animations
implementation("io.github.panpf.sketch4:sketch-animated-gif-koral:${LAST_VERSION}")

// [Android only] Android or Skia's built-in decoder decodes heif animations and plays them
implementation("io.github.panpf.sketch4:sketch-animated-heif:${LAST_VERSION}")

// Use Android or Skia's built-in decoder to decode webp animations and play them
implementation("io.github.panpf.sketch4:sketch-animated-webp:${LAST_VERSION}")

// Use awxkee's avif-decoder library to decode avi and heif images
implementation("io.github.panpf.sketch4:sketch-avif-awxkee:${LAST_VERSION}")

// Supports BlurHash format image
implementation("io.github.panpf.sketch4:sketch-blurhash:${LAST_VERSION}")

// Support accessing compose resources through uri or placeholder, fallback, error, etc.
implementation("io.github.panpf.sketch4:sketch-compose-resources:${LAST_VERSION}")
implementation("io.github.panpf.sketch4:sketch-extensions-compose-resources:${LAST_VERSION}")

// Provides practical functions such as download progress, image type icons, 
//  pausing loading during list scrolling, and saving cellular traffic.
implementation("io.github.panpf.sketch4:sketch-extensions-compose:${LAST_VERSION}")
implementation("io.github.panpf.sketch4:sketch-extensions-view:${LAST_VERSION}")

// [Android only] Support icon loading of apk files via file path 
implementation("io.github.panpf.sketch4:sketch-extensions-apkicon:${LAST_VERSION}")

// [Android only] Support loading icons of installed apps by package name and version code
implementation("io.github.panpf.sketch4:sketch-extensions-appicon:${LAST_VERSION}")

// [JVM only] Support using HttpURLConnection to access network images
implementation("io.github.panpf.sketch4:sketch-http-hurl:${LAST_VERSION}")

// [JVM only] Support using OkHttp to access network images
implementation("io.github.panpf.sketch4:sketch-http-okhttp:${LAST_VERSION}")

// Supports using ktor version 2.x to access network images
implementation("io.github.panpf.sketch4:sketch-http-ktor2:${LAST_VERSION}")

// Supports using ktor version 3.x to access network images
implementation("io.github.panpf.sketch4:sketch-http-ktor3:${LAST_VERSION}")

// Provides koin integration support, instead of sketch-compose and sketch-view, 
// and obtains Sketch instances from koin by default
implementation("io.github.panpf.sketch4:sketch-compose-koin:${LAST_VERSION}")
implementation("io.github.panpf.sketch4:sketch-view-koin:${LAST_VERSION}")

// Support SVG images
implementation("io.github.panpf.sketch4:sketch-svg:${LAST_VERSION}")

// Decode video frames with MediaMetadataRetriever on Android or AVFoundation on iOS/macOS Native
implementation("io.github.panpf.sketch4:sketch-video:${LAST_VERSION}")

// [Android only] Decoding video frames using wseemann's FFmpegMediaMetadataRetriever library
implementation("io.github.panpf.sketch4:sketch-video-ffmpeg:${LAST_VERSION}")
```

> [!TIP]
> * `sketch-compose`, `sketch-view` Modules all depend on the singleton provided by
    the `sketch-singleton` module. If you don’t need the singleton, you can directly rely on
    their `*-core` version.
> * The `sketch-http` module depends on `sketch-http-hurl` on jvm platforms and `sketch-http-ktor3`
    on non-jvm platforms.

### Register component

Sketch supports automatic discovery and registration of Fetcher and Decoder components, which are
implemented through ServiceLoader on the JVM platform and through the @EagerInitialization
annotation on non-JVM platforms.

All built-in modules support automatic registration. If you want to disable automatic registration,
please refer to the documentation for manual
registration: [《Register component》][register_component]

### R8 / Proguard

1. Android, iOS, Web and other platforms do not need to configure any obfuscation rules
2. The following obfuscation rules are required for desktop platforms:
    ```proguard
    # -------------------------- Sketch Privider ---------------------------- #
    -keep class * implements com.github.panpf.sketch.util.ComponentProvider { *; }
    ```
3. It may also be necessary to add obfuscation configurations to the indirect dependencies of
   three-party libraries such as [Kotlin Coroutines], [OkHttp], [Okio]

## Quickly Started

### Compose Multiplatform:

```kotlin
// val imageUri = "/Users/my/Downloads/image.jpg"
// val imageUri = file:///compose_resource/composeResources/com.github.panpf.sketch.sample.resources/files/sample.png
val imageUri = "https://www.sample.com/image.jpg"

AsyncImage(
    uri = imageUri,
    contentDescription = "photo"
)

AsyncImage(
    uri = imageUri,
    state = rememberAsyncImageState(ComposableImageOptions {
        placeholder(Res.drawable.placeholder)
        error(Res.drawable.error)
        crossfade()
        // There is a lot more...
    }),
    contentDescription = "photo"
)

AsyncImage(
    rqeuest = ComposableImageRequest(imageUri) {
        placeholder(Res.drawable.placeholder)
        error(Res.drawable.error)
        crossfade()
        // There is a lot more...
    },
    contentDescription = "photo"
)

Image(
    painter = rememberAsyncImagePainter(
        request = ComposableImageRequest(imageUri) {
            placeholder(Res.drawable.placeholder)
            error(Res.drawable.error)
            crossfade()
            // There is a lot more...
        }
    ),
    contentDescription = "photo"
)
```

> [!TIP]
> `placeholder(Res.drawable.placeholder)` needs to import the `sketch-compose-resources` module

### Android View:

```kotlin
// val imageUri = "/sdcard/download/image.jpg"
// val imageUri = "file:///android_asset/image.jpg"
// val imageUri = "content://media/external/images/media/88484"
val imageUri = "https://www.sample.com/image.jpg"

imageView.loadImage(imageUri)

imageView.loadImage(imageUri) {
    placeholder(R.drawable.placeholder)
    error(R.drawable.error)
    crossfade()
    // There is a lot more...
}

val request = ImageRequest(context, imageUri) {
    placeholder(R.drawable.placeholder)
    error(R.drawable.error)
    crossfade()
    target(imageView)
    // There is a lot more...
}
context.sketch.enqueue(request)
```

## Documents

Basic functions:

* [Get Started][getting_started]
* [Register component][register_component]
* [Compose][compose]
* [Http: Load network images][http]
* [AnimatedImage: GIF、WEBP、HEIF][animated_image]
* [Resize: Modify the image size][resize]
* [Transformation: Transformation image][transformation]
* [Transition: Display images in cool transitions][transition]
* [StateImage: Placeholder and error images][state_image]
* [Thumbnail: Load low-resolution thumbnails first][thumbnail]
* [Listener: Listen for request status and download progress][listener]
* [DownloadCache: Understand download caching to avoid repeated downloads][download_cache]
* [ResultCache: Understand result caching to avoid duplicate conversions][result_cache]
* [MemoryCache: Understand memory caching to avoid repeated loading][memory_cache]
* [Fetcher: Learn about Fetcher and extend new URI types][fetcher]
* [Decoder: Understand the decoding process of Sketch][decoder]
* [Target: Apply the load results to the target][target]
* [SVG: Decode SVG still images][svg]
* [VideoFrames: Decode video frames][video_frame]
* [BlurHash][blurhash]
* [ExifOrientation: Correct the image orientation][exif_orientation]
* [ImageOptions: Manage image configurations in a unified manner][image_options]
* [Interceptor: Intercept ImageRequest][interceptor]
* [Preload images into memory][preload]
* [Download images][download]
* [Lifecycle][lifecycle]
* [Log][log]
* [Migrate][migrate]

Featured functions:

* [SketchImageView: Configure the request through XML attributes][sketch_image_view]
* [Improve the clarity of long images in grid lists][long_image_grid_thumbnails]
* [Displays the download progress][progress_indicator]
* [Displays the image type corner][mime_type_logo]
* [Pause image downloads on cellular data to save data][save_cellular_traffic]
* [The list slides to pause the loading of images][pause_load_when_scrolling]
* [Displays an icon for an apk file or installed app][apk_app_icon]

## Change log

Please review the [CHANGELOG.md] file

## Test Platform

* Android: Emulator; Arm64; API 21-34
* Desktop: macOS; 14.6.1; JDK 17
* iOS: iPhone 16 Simulator; iOS 18.1
* macOS Native: Mac mini M4; macOS 27 beta 4
* Web: Chrome; 130

## Run Sample App

Prepare the environment:

1. Android Studio: Norwhal+ (2025.1.1+)
2. JDK: 17+
3. Use [kdoctor] to check the running environment and follow the prompts to install the required
   software
4. Android Studio installs the `Kotlin Multiplatform` plugin

Run the sample app:

1. Clone the project and open it using Android Studio
2. After synchronization is completed, the `Kotlin Multiplatform` plug-in will automatically create
   a running configuration for each platform.
3. Select the corresponding platform's running configuration, and then click Run

## About version 4.0

* The maven groupId is upgraded to `io.github.panpf.sketch4`, so versions 2.\* and 3.\* will not
  prompt for upgrade
* Version 4.0 is specially built for Compose Multiplatform, so there are many breaking changes in
  the API, please upgrade with caution
* Version 4.0 has made a lot of simplifications and is much simpler than version 3.0, please check
  the update log for details
* Android minimum API raised to API 21
* Kotlin version upgraded to 2.0.0

## Special thanks

* [coil-kt/coil][coil]: Sketch uses some code from Coil, including framework, compose and
  sketch-animated movie part
* [koral--/android-gif-drawable][android-gif-drawable]: animated-koralgif
* [wseemann/FFmpegMediaMetadataRetriever][FFmpegMediaMetadataRetriever]: video-ffmpeg
* [BigBadaboom/androidsvg][androidsvg]: svg

## My Projects

The following are my other open source projects. If you are interested, you can learn about them:

* [zoomimage](https://github.com/panpf/zoomimage): Library for zoom images, supported Android View,
  Compose and Compose Multiplatform; supported double-click zoom, One or two fingers gesture zoom,
  single-finger drag, inertial sliding, positioning, rotation, super-large image subsampling and
  other functions.
* [assembly-adapter](https://github.com/panpf/assembly-adapter): A library on Android that provides
  multi-type Item implementations for various adapters. Incidentally, it also provides the most
  powerful divider for RecyclerView.
* [sticky-item-decoration](https://github.com/panpf/stickyitemdecoration): RecyclerView sticky item
  implementation

## License

Apache 2.0. See the [LICENSE](LICENSE.txt) file for details.

[comment]: <> (header)

[license_image]: https://img.shields.io/badge/License-Apache%202-blue.svg

[logo_image]: docs/images/logo.png

[license_link]: https://www.apache.org/licenses/LICENSE-2.0

[platform_image]: https://img.shields.io/badge/Platform-ComposeMultiplatform-brightgreen.svg

[qq_group_image]: https://img.shields.io/badge/QQ%E4%BA%A4%E6%B5%81%E7%BE%A4-529630740-red.svg

[version_icon]: https://img.shields.io/maven-central/v/io.github.panpf.sketch4/sketch-singleton

[version_link]: https://repo1.maven.org/maven2/io/github/panpf/sketch4/

[comment]: <> (wiki)

[animated_image]: docs/animated_image.md

[apk_app_icon]: docs/apk_app_icon.md

[compose]: docs/compose.md

[decoder]: docs/decoder.md

[download_cache]: docs/download_cache.md

[exif_orientation]: docs/exif_orientation.md

[fetcher]: docs/fetcher.md

[getting_started]: docs/getting_started.md

[register_component]: docs/register_component.md

[http]: docs/http.md

[image_options]: docs/image_options.md

[lifecycle]: docs/lifecycle.md

[listener]: docs/listener.md

[log]: docs/log.md

[long_image_grid_thumbnails]: docs/long_image_grid_thumbnails.md

[memory_cache]: docs/memory_cache.md

[mime_type_logo]: docs/mime_type_logo.md

[pause_load_when_scrolling]: docs/pause_load_when_scrolling.md

[preload]: docs/preload.md

[download]: docs/download_image.md

[progress_indicator]: docs/progress_indicator.md

[interceptor]: docs/interceptor.md

[resize]: docs/resize.md

[result_cache]: docs/result_cache.md

[save_cellular_traffic]: docs/save_cellular_traffic.md

[sketch_image_view]: docs/sketch_image_view.md

[state_image]: docs/state_image.md

[thumbnail]: docs/thumbnail.md

[svg]: docs/svg.md

[target]: docs/target.md

[transformation]: docs/transformation.md

[transition]: docs/transition.md

[video_frame]: docs/video_frame.md

[migrate]: docs/migrate.md

[blurhash]: docs/blurhash.md

[comment]: <> (links)

[androidsvg]: https://github.com/BigBadaboom/androidsvg

[android-gif-drawable]: https://github.com/koral--/android-gif-drawable

[coil]: https://github.com/coil-kt/coil

[FFmpegMediaMetadataRetriever]: https://github.com/wseemann/FFmpegMediaMetadataRetriever

[Kotlin Coroutines]: https://github.com/Kotlin/kotlinx.coroutines/blob/master/kotlinx-coroutines-core/jvm/resources/META-INF/proguard/coroutines.pro

[OkHttp]: https://square.github.io/okhttp/features/r8_proguard/

[Okio]: https://square.github.io/okio/

[compose_compiler_config.conf]: sketch-core/compose_compiler_config.conf

[stability_configuration]: https://developer.android.com/develop/ui/compose/performance/stability/fix#configuration-file

[comment]: <> (footer)

[CHANGELOG.md]: CHANGELOG.md

[kdoctor]: https://github.com/Kotlin/kdoctor

sketch

sketch 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

sketch

sketch 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

Download README