Glide 4.5源码 android 通用 图片加载库

Glide ===== [](https://maven-badges.herokuapp.com/maven-central/com.github.bumptech.glide/glide) [](https://travis-ci.org/bumptech/glide) | [View Glide's documentation][20] | [简体中文文档][22] | [Report an issue with Glide][5] Glide is a fast and efficient open source media management and image loading framework for Android that wraps media decoding, memory and disk caching, and resource pooling into a simple and easy to use interface.  Glide supports fetching, decoding, and displaying video stills, images, and animated GIFs. Glide includes a flexible API that allows developers to plug in to almost any network stack. By default Glide uses a custom `HttpUrlConnection` based stack, but also includes utility libraries plug in to Google's Volley project or Square's OkHttp library instead. Glide's primary focus is on making scrolling any kind of a list of images as smooth and fast as possible, but Glide is also effective for almost any case where you need to fetch, resize, and display a remote image. Download -------- For detailed instructions and requirements, see Glide's [download and setup docs page][28]. You can download a jar from GitHub's [releases page][1]. Or use Gradle: ```gradle repositories { mavenCentral()  google() } dependencies {  implementation 'com.github.bumptech.glide:glide:4.8.0' annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0' } ``` Or Maven: ```xml <dependency> <groupId>com.github.bumptech.glide</groupId> <artifactId>glide</artifactId> <version>4.8.0</version> </dependency> <dependency> <groupId>com.github.bumptech.glide</groupId> <artifactId>compiler</artifactId> <version>4.8.0</version> <optional>true</optional> </dependency> ``` For info on using the bleeding edge, see the [Snapshots][17] docs page. ProGuard -------- Depending on your ProGuard (DexGuard) config and usage, you may need to include the following lines in your proguard.cfg (see the [Download and Setup docs page][25] for more details): ```pro -keep public class * implements com.bumptech.glide.module.GlideModule -keep public class * extends com.bumptech.glide.module.AppGlideModule -keep public enum com.bumptech.glide.load.ImageHeaderParser$** { **[] $VALUES; public *; } # for DexGuard only -keepresourcexmlelements manifest/application/meta-data@value=GlideModule ``` How do I use Glide? ------------------- Check out the [documentation][20] for pages on a variety of topics, and see the [javadocs][3]. For Glide v3, see the [wiki][2]. Simple use cases with Glide's [generated API][21] will look something like this: ```java // For a simple view: @Override public void onCreate(Bundle savedInstanceState) { ... ImageView imageView = (ImageView) findViewById(R.id.my_image_view); GlideApp.with(this).load("http://goo.gl/gEgYUd").into(imageView); } // For a simple image list: @Override public View getView(int position, View recycled, ViewGroup container) { final ImageView myImageView; if (recycled == null) { myImageView = (ImageView) inflater.inflate(R.layout.my_image_view, container, false); } else { myImageView = (ImageView) recycled; } String url = myUrls.get(position); GlideApp .with(myFragment) .load(url) .centerCrop() .placeholder(R.drawable.loading_spinner) .into(myImageView); return myImageView; } ``` Status ------ Version 4 is now released and stable. Updates are currently released at least monthly with new features and bug fixes. Comments/bugs/questions/pull requests are always welcome! Please read [CONTRIBUTING.md][5] on how to report issues. Compatibility ------------- * **Minimum Android SDK**: Glide v4 requires a minimum API level of 14. * **Compile Android SDK**: Glide v4 requires you to compile against API 26 or later. If you need to support older versions of Android, consider staying on [Glide v3][14], which works on API 10, but is not actively maintained. * **OkHttp 3.x**: There is an optional dependency available called `okhttp3-integration`, see the [docs page][23]. * **Volley**: There is an optional dependency available called `volley-integration`, see the [docs page][24]. * **Round Pictures**: `CircleImageView`/`CircularImageView`/`RoundedImageView` are known to have [issues][18] with `TransitionDrawable` (`.crossFade()` with `.thumbnail()` or `.placeholder()`) and animated GIFs, use a [`BitmapTransformation`][19] (`.circleCrop()` will be available in v4) or `.dontAnimate()` to fix the issue. * **Huge Images** (maps, comic strips): Glide can load huge images by downsampling them, but does not support zooming and panning `ImageView`s as they require special resource optimizations (such as tiling) to work without `OutOfMemoryError`s. Build ----- Building Glide with gradle is fairly straight forward: ```shell git clone https://github.com/bumptech/glide.git cd glide ./gradlew jar ``` **Note**: Make sure your *Android SDK* has the *Android Support Repository* installed, and that your `$ANDROID_HOME` environment variable is pointing at the SDK or add a `local.properties` file in the root project with a `sdk.dir=...` line. Samples ------- Follow the steps in the [Build](#build) section to set up the project and then: ```shell ./gradlew :samples:flickr:run ./gradlew :samples:giphy:run ./gradlew :samples:svg:run ./gradlew :samples:contacturi:run ``` You may also find precompiled APKs on the [releases page][1]. Development ----------- Follow the steps in the [Build](#build) section to setup the project and then edit the files however you wish. [Android Studio][26] cleanly imports both Glide's source and tests and is the recommended way to work with Glide. To open the project in Android Studio: 1. Go to *File* menu or the *Welcome Screen* 2. Click on *Open...* 3. Navigate to Glide's root directory. 4. Select `setting.gradle` For more details, see the [Contributing docs page][27]. Getting Help ------------ To report a specific problem or feature request, [open a new issue on Github][5]. For questions, suggestions, or anything else, email [Glide's discussion group][6], or join our IRC channel: [irc.freenode.net#glide-library][13]. Contributing ------------ Before submitting pull requests, contributors must sign Google's [individual contributor license agreement][7]. Thanks ------ * The **Android team** and **Jake Wharton** for the [disk cache implementation][8] Glide's disk cache is based on. * **Dave Smith** for the [GIF decoder gist][9] Glide's GIF decoder is based on. * **Chris Banes** for his [gradle-mvn-push][10] script. * **Corey Hall** for Glide's [amazing logo][11]. * Everyone who has contributed code and reported issues! Author ------ Sam Judd - @sjudd on GitHub, @samajudd on Twitter License ------- BSD, part MIT and Apache 2.0. See the [LICENSE][16] file for details. Disclaimer --------- This is not an official Google product. [1]: https://github.com/bumptech/glide/releases [2]: https://github.com/bumptech/glide/wiki [3]: https://bumptech.github.io/glide/ref/javadocs.html [4]: https://www.jetbrains.com/idea/download/ [5]: https://github.com/bumptech/glide/blob/master/CONTRIBUTING.md [6]: https://groups.google.com/forum/#!forum/glidelibrary [7]: https://developers.google.com/open-source/cla/individual [8]: https://github.com/JakeWharton/DiskLruCache [9]: https://gist.github.com/devunwired/4479231 [10]: https://github.com/chrisbanes/gradle-mvn-push [11]: static/glide_logo.png [12]: https://github.com/bumptech/glide/wiki/Integration-Libraries [13]: http://webchat.freenode.net/?channels=glide-library [14]: https://github.com/bumptech/glide/tree/3.0 [15]: https://github.com/bumptech/glide/tree/master [16]: https://github.com/bumptech/glide/blob/master/LICENSE [17]: http://bumptech.github.io/glide/dev/snapshots.html [18]