A Retrofit CallAdapter.Factory that posts Call callbacks with an Android Handler.
On Android, Retrofit 2 installs a CallAdapter.Factory that handles all Call types and posts the callbacks on the main thread. Many messages build up in the main thread Handler's MessageQueue, and the callback may not be run for up to hundreds of milliseconds. With HandlerCallAdapterFactory, service methods can be annotated with @UseHandlerPost to use Hander.postAtFrontOfQueue to get results posted much sooner.
Gradle:
implementation 'com.nightlynexus.handlercalladapterfactory:handlercalladapterfactory:0.1.0'interface Service {
@UseHandlerPost(atFrontOfQueue = true) @GET("/") Call<Void> get();
}
Retrofit retrofit = new Retrofit.Builder()
// Add the HandlerCallAdapterFactory after other CallAdapters factories
// to let other CallAdapters delegate.
.addCallAdapterFactory(HandlerCallAdapterFactory.createMain())
.build();Copyright 2019 Eric Cochran
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