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Rinsing the Brush: Picasso 3.0 John Rodriguez Jake Wharton

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3 years later

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3.x Goals

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• Android P 3.x Goals

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• Android P • Improvements 3.x Goals

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• Android P • Improvements • OkHttp 2.x => 3.x 3.x Goals

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• Android P • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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• Android P • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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Bitmap decodeStreamPreP(Request r, BufferedSource bs) { BitmapFactory.Options options = createBitmapOptions(request); if (requiresInSampleSize(options)) { InputStream stream = new SourceBufferingInputStream(bs); BitmapFactory.decodeStream(stream, null, options); calculateInSampleSize(r.targetWidth, r.targetHeight, options, r); } return BitmapFactory.decodeStream(bs.inputStream(), null, options); }

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Bitmap decodeStreamPreP(Request r, BufferedSource bs) { BitmapFactory.Options options = createBitmapOptions(request); if (requiresInSampleSize(options)) { InputStream stream = new SourceBufferingInputStream(bs); BitmapFactory.decodeStream(stream, null, options); calculateInSampleSize(r.targetWidth, r.targetHeight, options, r); } return BitmapFactory.decodeStream(bs.inputStream(), null, options); }

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Bitmap decodeStreamP(Request r, BufferedSource bs) { ImageDecoder.Source imageSource = ImageDecoder.createSource(ByteBuffer.wrap(bs.readByteArray())); return ImageDecoder.decodeBitmap( imageSource, (imageDecoder, imageInfo, src) -> { if (r.hasSize()) { imageDecoder.setTargetSize(r.targetWidth, r.targetHeight); } } }); }

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Bitmap decodeStreamP(Request r, BufferedSource bs) { ImageDecoder.Source imageSource = ImageDecoder.createSource(ByteBuffer.wrap(bs.readByteArray())); return ImageDecoder.decodeBitmap( imageSource, (imageDecoder, imageInfo, src) -> { if (r.hasSize()) { imageDecoder.setTargetSize(r.targetWidth, r.targetHeight); } } }); }

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Bitmap decodeStreamP(Request r, BufferedSource bs) { ImageDecoder.Source imageSource = ImageDecoder.createSource(ByteBuffer.wrap(bs.readByteArray())); return ImageDecoder.decodeBitmap( imageSource, (imageDecoder, imageInfo, src) -> { if (r.hasSize()) { imageDecoder.setTargetSize(r.targetWidth, r.targetHeight); } } }); }

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• Android P • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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Picasso

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Picasso picasso.load(url) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .fit() .into(view);

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Picasso

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Picasso fun loadImage( remoteUri: Uri, @ColorInt tintColor: Int? = null ) { val creator = picasso.load(remoteUri) .placeholder(avatarPlaceholder) .fit() if (transformTintColor != null) { creator.transform(TintTransformation(tintColor)) } creator.into(this) }

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Picasso fun loadImage( awsAssetUri: Uri, height: Int, width: Int ) { val creator = picasso.load(awsAssetUri) .placeholder(avatarPlaceholder) .fit() .into(this) }

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Picasso fun loadImage( awsAssetUri: Uri, height: Int, width: Int ) { val creator = picasso.load(awsAssetUri) .placeholder(avatarPlaceholder) .fit() .into(this) }

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Picasso picasso.load(“http://shrek.jpg”) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .fit() .into(view);

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Picasso Request “http://shrek.jpg”

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Picasso Request Request Transformer Request “http://shrek.jpg”

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Picasso Request “http://shrek.jpg” Request Transformer Request “http://bar.com/20x20/shrek.jpg”

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p://shrek.jpg

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0101011010100 http://shrek.jpg

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0101011010100 http://shrek.jpg

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01010110101001101

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01010110101001101

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01010110101001101

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01 01 0110 10100 1 1 0 1

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01 01 0110 10100 1 1 0 1

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0x20/shrek.jpg

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http://bar.com/20x20/shrek.jpg

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http://bar.com/20x20/shrek.jpg

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0101011

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0101011

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0101011

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0101011

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0101011

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01 010 1 1

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01 010 1 1

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01 010 1 1

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?

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/** * Sets the stable key for this request to be used instead of the * URI or resource ID when caching. * Two requests with the same value are considered to be for the * same resource. */ public RequestCreator stableKey(String stableKey) { data.stableKey(stableKey); return this; }

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createNewPicasso(context, 1024, new CustomRequestHandler()); Picasso createNewPicasso( Context context, int cacheSize, RequestHandler requestHandler ) {e return new Picasso.Builder(context) e.withCacheSize(cacheSize) e.addRequestHandler(requestHandler) e.build(); }e

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createChildPicasso(builder, 1024, new CustomRequestHandler()); Picasso createChildPicasso( Picasso.Builder builder, int cacheSize, RequestHandler requestHandler ) { return builder .withCacheSize(cacheSize) .addRequestHandler(requestHandler) .build(); }e

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createChildPicasso(picasso, 1024, new CustomRequestHandler()); Picasso createChildPicasso( Picasso picasso, int cacheSize, RequestHandler requestHandler ) { return picasso.newBuilder() .withCacheSize(cacheSize) .addRequestHandler(requestHandler) .build(); }e builder Picasso.Builder builder, builder

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createChildPicasso(picasso, 1024, new CustomRequestHandler()); Picasso createChildPicasso( Picasso picasso, int cacheSize, RequestHandler requestHandler ) { return picasso.newBuilder() .withCacheSize(cacheSize) .addRequestHandler(requestHandler) .build(); }

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@Component( modules = RootModule.class ) @RootScope interface RootComponent { @Root Picasso picasso(); } @Module class RootModule { @Provides @RootScope @Root Picasso providePicasso(@App Context context) { return new Picasso.Builder(context) .withCacheSize(1024*1024) .build(); } }

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@Component( modules = RootModule.class ) @RootScope interface RootComponent { @Root Picasso picasso(); } @Module class RootModule { @Provides @RootScope @Root Picasso providePicasso(@App Context context) { return new Picasso.Builder(context) .withCacheSize(1024*1024) .build(); } }

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@Component( modules = RootModule.class ) @RootScope interface RootComponent { @Root Picasso picasso(); } @Module class RootModule { @Provides @RootScope @Root Picasso providePicasso(@App Context context) { return new Picasso.Builder(context) .withCacheSize(1024*1024) .build(); } }

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@Component( dependencies = RootComponent.class, modules = ScreenModule.class ) @ScreenScope interface ScreenComponent { } @Module class ScreenModule { @Provides @ScreenScope @Screen Picasso providePicasso(@Root Picasso picasso) { return picasso.newBuilder() .withCacheSize(1024) .build(); } }

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@Component( dependencies = RootComponent.class, modules = ScreenModule.class ) @ScreenScope interface ScreenComponent { } @Module class ScreenModule { @Provides @ScreenScope @Screen Picasso providePicasso(@Root Picasso picasso) { return picasso.newBuilder() .withCacheSize(1024) .build(); } }

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@Component( dependencies = RootComponent.class, modules = ScreenModule.class ) @ScreenScope interface ScreenComponent { } @Module class ScreenModule { @Provides @ScreenScope @Screen Picasso providePicasso(@Root Picasso picasso) { return picasso.newBuilder() .withCacheSize(1024) .build(); } }

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@Component( dependencies = RootComponent.class, modules = ScreenModule.class ) @ScreenScope interface ScreenComponent { } @Module class ScreenModule { @Provides @ScreenScope @Screen Picasso providePicasso(@Root Picasso picasso) { return picasso.newBuilder() .withCacheSize(1024) .build(); } }

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/** * Image downloading, transformation, and caching manager. * * Use {@see PicassoProvider#get()} for a global singleton * instance or construct your own instance with {@link Builder}. */ public class Picasso implements LifecycleObserver { }

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/** * Image downloading, transformation, and caching manager. * * Use {@see PicassoProvider#get()} for a global singleton * instance or construct your own instance with {@link Builder}. */ public class Picasso implements LifecycleObserver { }

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class SampleActivity extends FragmentActivity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); … getLifecycle().addObserver(picasso); }

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class SampleActivity extends FragmentActivity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); … getLifecycle().addObserver(picasso); }

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@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY) void cancelAll() { List actions = new ArrayList<>(targetToAction.values()); for (int i = 0, n = actions.size(); i < n; i++) { cancelExistingRequest(actions.get(i).getTarget()); } List deferredRequestCreators = new ArrayList<>(targetToDeferredRequestCreator.values()); for (int i = 0, n = deferredCreators.size(); i < n; i++) { deferredCreators.get(i).cancel(); } }

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Picasso Request “http://shrek.jpg” Request Transformer Request’ “http://bar.com/20x20/shrek.jpg”

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Picasso Request Transformer

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ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler Picasso Request Transformer

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Picasso Request Transformer Handler Request Resource AssetsRequestHandler NetworkRequestHandler FileRequestHandler

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Picasso Request Transformer Handler Request

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Picasso Request Transformer Request Handler Bitmap

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Bitmap Drawable Result Picasso Request Transformer Request Handler

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Picasso Request Transformer Result Request Handler Greyscale Circle Tint

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Greyscale Circle Tint Picasso Request Transformer Result Request Handler Transformation

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Picasso Request Transformer Result Target Request Handler Transformation

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Request Transformer Result Request Handler Transformation

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Transformer Result Transformer Transformer

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Transformer Transformer Transformer

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Transformer Transformer Transformer

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Transformer Transformer Transformer

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custom interceptors Retry Bridge Cache Connect Call Server square/okhttp

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@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Picasso.with(this) .load("http://example.com/logo.png") .into(imageView); }

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@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Picasso.with(this) .load("http://example.com/logo.png") .into(imageView); }

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public static Picasso with(Context context) { if (singleton == null) { synchronized (Picasso.class) { if (singleton == null) { singleton = new Builder(context).build(); } } } return singleton; }

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public static Picasso with(Context context) { if (singleton == null) { synchronized (Picasso.class) { if (singleton == null) { singleton = new Builder(context).build(); } } } return singleton; }

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public static void setSingletonInstance(Picasso picasso) { synchronized (Picasso.class) { if (singleton != null) { throw new IllegalStateException( "Singleton instance already exists."); } singleton = picasso; } }

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public static void setSingletonInstance(Picasso picasso) { synchronized (Picasso.class) { if (singleton != null) { throw new IllegalStateException( "Singleton instance already exists."); } singleton = picasso; } }

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@Module(includes = ThumborModule.class) final class ProductionPicassoModule { @Provides @Singleton static Picasso providePicasso( @App Context context, OkHttpClient client, Thumbor thumbor) { Picasso.RequestTransformer transformer = new PollexorRequestTransformer(thumbor); return new Picasso.Builder(context) .client(client) .requestTransformer(transformer) .listener((picasso, uri, e) -> Timber.d(e, uri.toString())); } }

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@Module(includes = ThumborModule.class) final class ProductionPicassoModule { @Provides @Singleton static Picasso providePicasso( @App Context context, OkHttpClient client, Thumbor thumbor) { Picasso.RequestTransformer transformer = new PollexorRequestTransformer(thumbor); return new Picasso.Builder(context) .client(client) .requestTransformer(transformer) .listener((picasso, uri, e) -> Timber.d(e, uri.toString())); } }

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public final class PicassoProvider { private static volatile Picasso instance; public static Picasso get() { if (instance == null) { synchronized (PicassoProvider.class) { if (instance == null) { if (PicassoContentProvider.context == null) { throw new IllegalStateException("context == null"); } instance = new Picasso.Builder(PicassoContentProvider.context).build(); } } } return instance; } }

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public final class PicassoProvider { private static volatile Picasso instance; public static Picasso get() { if (instance == null) { synchronized (PicassoProvider.class) { if (instance == null) { if (PicassoContentProvider.context == null) { throw new IllegalStateException("context == null"); } instance = new Picasso.Builder(PicassoContentProvider.context).build(); } } } return instance; } }

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public final class PicassoProvider { private static volatile Picasso instance; public static Picasso get() { if (instance == null) { synchronized (PicassoProvider.class) { if (instance == null) { if (PicassoContentProvider.context == null) { throw new IllegalStateException("context == null"); } instance = new Picasso.Builder(PicassoContentProvider.context).build(); } } } return instance; } }

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public final class PicassoContentProvider extends ContentProvider { static Context context; @Override public boolean onCreate() { context = getContext(); return true; } … }

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interface ImageDecoder { class Image { @Nullable Bitmap bitmap; @Nullable Drawable drawable; int exifOrientation; } boolean canHandleSource(BufferedSource source); Image decodeImage(BufferedSource source, Request request) throws IOException; }

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class ImageDecoderFactory { List decoders; ImageDecoder getImageDecoderForSource(BufferedSource source) { for (ImageDecoder decoder : decoders) { if (decoder.canHandleSource(source)) { return decoder; } } return null; } }

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Picasso

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Picasso?

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• Android P
 • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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Picasso

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Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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Downloader Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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OkHttp 2.x HttpURLConnection Downloader Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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OkHttp 2.x HttpURLConnection OkHttp 3.x Downloader Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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OkHttp 3.x HttpURLConnection OkHttp 2.x Downloader Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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OkHttp 3.x Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ...

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Picasso ResourceRequestHandler AssetsRequestHandler NetworkRequestHandler FileRequestHandler ... Call.Factory (OkHttp 3.x)

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Picasso OkHttp

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Okio Picasso OkHttp

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Picasso OkHttp Retrofit Okio

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Picasso OkHttp Okio Retrofit Moshi

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Picasso OkHttp Okio Retrofit Moshi

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Picasso OkHttp Okio Retrofit Moshi Wire

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Picasso OkHttp Okio Retrofit Moshi Wire

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• Android P • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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java.io.IOException: Cannot reset at com.squareup.picasso.MarkableInputStream.reset(MarkableInputStream.java:99) at com.squareup.picasso.BitmapHunter.decodeStream(BitmapHunter.java:140) at com.squareup.picasso.BitmapHunter.hunt(BitmapHunter.java:217) at com.squareup.picasso.BitmapHunter.run(BitmapHunter.java:159) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764) at com.squareup.picasso.Utils$PicassoThread.run(Utils.java:411)

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nightmare_shrek.png

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MAGIC nightmare_shrek.png

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METADATA METADATA METADATA MAGIC nightmare_shrek.png

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC nightmare_shrek.png

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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InputStream PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA METADATA METADATA METADATA MAGIC

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA JPEG?

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADAT JPEG?

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADAT

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADAT

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADAT

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA JPEG?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA JPEG?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA JPEG?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG!

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG size?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG size?

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA PNG 1920x1080!

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA PNG 1920x1080

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA 1920x1080

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InputStream BitmapFactory BitmapFactory inJustDecodeBounds=true MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA 1920x1080 PIXEL DAT

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InputStream BitmapFactory inJustDecodeBounds=true BitmapFactory PIXEL DATA MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA 1920x1080

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InputStream BitmapFactory inJustDecodeBounds=true BitmapFactory PIXEL DATA MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA 1920x1080

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InputStream BitmapFactory inJustDecodeBounds=true BitmapFactory PIXEL DATA MAGIC METADATA 2METADATA2 1METADATA1 PIXEL DATA 1920x1080

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InputStream MAGIC METADATA

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InputStream BitmapFactory inJustDecodeBounds=true MAGIC METADATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 BitmapFactory MAGIC METADATA METADATA METADATA PIXEL DATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 MAGIC METADATA METADATA METADATA PIXEL DATA BitmapFactory

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BitmapFactory inJustDecodeBounds=true MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 BitmapFactory

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PIXEL DATA PIXEL DATA PIXEL DATA BitmapFactory inJustDecodeBounds=true MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 BitmapFactory

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PIXEL DATA PIXEL DATA PIXEL DATA BitmapFactory inJustDecodeBounds=true MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 BitmapFactory PIXEL DATA PIXEL DATA PIXEL DATA

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PIXEL DATA PIXEL DATA PIXEL DATA BitmapFactory inJustDecodeBounds=true MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA 1920x1080 BitmapFactory PIXEL DATA PIXEL DATA PIXEL DATA

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MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA

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BitmapFactory inJustDecodeBounds=true MAGIC METADATA METADATA METADATA PIXEL DATA MarkableInputStream MAGIC METADATA METADATA METADATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true

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PIXEL DATA PIXEL DATA PIXEL DATA MarkableInputStream BitmapFactory inJustDecodeBounds=true

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PIXEL DATA PIXEL DATA PIXEL DATA MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true

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MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true

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MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true ??? PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true ??? PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true ??? BitmapFactory PIXEL DATA PIXEL DATA

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MarkableInputStream BitmapFactory inJustDecodeBounds=true ??? BitmapFactory java.io.IOException: Cannot reset at com.squareup.picasso.MarkableInputStream.reset(MarkableInputStream.java:99) at com.squareup.picasso.BitmapHunter.decodeStream(BitmapHunter.java:140) at com.squareup.picasso.BitmapHunter.hunt(BitmapHunter.java:217) at com.squareup.picasso.BitmapHunter.run(BitmapHunter.java:159) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764) at com.squareup.picasso.Utils$PicassoThread.run(Utils.java:411)

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BitmapFactory MarkableInputStream InputStream BitmapFactory

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BitmapFactory MarkableInputStream InputStream Picasso 2.x BitmapFactory Picasso 3.x

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BitmapFactory MarkableInputStream InputStream Picasso 2.x BitmapFactory BufferedSource Picasso 3.x

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BitmapFactory MarkableInputStream InputStream Picasso 2.x BitmapFactory BufferedSource Picasso 3.x SourceBufferingInputStream

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BitmapFactory BufferedSource SourceBufferingInputStream

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream offset: 0

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 0

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 0 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1024

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 0

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 1024 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 2048

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 2048 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1024

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 2048 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 2048

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 2048

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 2048 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 3072

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3072 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 2048

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3072 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3072

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3072

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset:x3072 8PIXEL DATA8 9PIXEL DATA9 3754

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3754 8PIXEL DATA8 9PIXEL DATA9 x3072

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3754 8PIXEL DATA8 9PIXEL DATA9

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3754

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3754 ???

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BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC offset: 3754 ??? BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 8PIXEL DATA8 9PIXEL DATA9 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream offset: 0

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC offset: 0

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC offset: 341 1METADATA1 MAGIC

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC offset: 341 1METADATA1 MAGIC

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BitmapFactory inJustDecodeBounds=true BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC offset: 341 1METADATA1 MAGIC 1920x1080

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BufferedSource 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080

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ExifInterface BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 0

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ExifInterface BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 341 1METADATA1 MAGIC

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ExifInterface BufferedSource SourceBufferingInputStream 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 341 1METADATA1 MAGIC

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ExifInterface BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 341

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ExifInterface BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341

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ExifInterface BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341

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ExifInterface BufferedSource SourceBufferingInputStream 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90°

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BufferedSource 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 1PIXEL DATA1 3METADATA3 2METADATA2 1METADATA1 MAGIC 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 2PIXEL DATA2 3PIXEL DATA3 4PIXEL DATA4 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 5PIXEL DATA5 6PIXEL DATA6 7PIXEL DATA7 8PIXEL DATA8 9PIXEL DATA9 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 8PIXEL DATA8 9PIXEL DATA9 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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BitmapFactory InputStream BufferedSource 1METADATA1 MAGIC offset: 341 BitmapFactory inJustDecodeBounds=true SourceBufferingInputStream 1920x1080 offset: 1024 1PIXEL DATA1 3METADATA3 2METADATA2 341 90° ExifInterface SourceBufferingInputStream

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• Android P • Improvements • OkHttp 2.x => 3.x
 • Okio integration 3.x Goals

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Picasso.with(context)X .load(url) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .fit() .into(view);

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PicassoProvider.get()X .load(url) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .fit() .into(view); with context

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picasso.load(url) .placeholder(R.drawable.placeholder) .error(R.drawable.error) .fit() .into(view);

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abstract class RequestHandler { abstract boolean canHandleRequest(Request request); abstract Result load(Request request, int networkPolicy); }X

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abstract class RequestHandler { abstract boolean canHandleRequest(Request request); abstract void load(Picasso picasso, Request request, Callback callback); }X Result int networkPolicy

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• Better separation of concerns: Image/Target/RenderCall Coming Soon

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• Better separation of concerns: Image/Target/RenderCall • Propagating Drawables to Target (animated GIFs!) Coming Soon

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• Better separation of concerns: Image/Target/RenderCall • Propagating Drawables to Target (animated GIFs!) • Improved pipelining Coming Soon

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• Better separation of concerns: Image/Target/RenderCall • Propagating Drawables to Target (animated GIFs!) • Improved pipelining • More? Let us know! Coming Soon

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Rinsing the Brush: Picasso 3.0 @jrodbx @JakeWharton

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PICASSO WILL RETURN 3.0