Connecting to Web Services on Android

Jan 8, 200957 likes24,332 views

The document discusses connecting Android applications to web services using HTTP, XML, JSON, and OAuth. It covers using the HttpClient API to make HTTP requests, parsing responses in XML and JSON formats, and obtaining access tokens from services using OAuth authentication. The document also recommends libraries for tasks like XML/JSON processing and provides examples of client libraries that connect to specific web services.

The document discusses Android web services using the HttpClient API. It describes invocation styles in HttpClient as synchronous and asynchronous. It provides examples of sending HTTP requests using HttpGet and HttpPost, and receiving HTTP responses using HttpResponse and ResponseHandler interfaces. Common response formats like XML, JSON, RSS and Atom are mentioned and examples of parsing JSON responses using the JSONObject class are given.

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Connecting to Web Services on Android June 2 2010sullis

This document discusses connecting to web services from Android applications. It covers using the HttpClient API to make HTTP requests and handle responses, processing common response formats like XML and JSON, and some client libraries for accessing specific web services. It emphasizes doing network operations asynchronously without blocking the UI thread, and processing responses from web services that return XML, JSON, RSS, Atom or other formats.

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This document provides an overview of new features and capabilities in Android 3.x, including a redesigned "holographic" UI, the new Action Bar for navigation, the introduction of Fragments for modular UI components, drag and drop functionality, and a Digital Rights Management API. It also discusses tablets running Android 3.x like the XOOM and Galaxy Tab, emulator performance issues, and recommends resources for application development best practices.

Android 3.1 - Portland Code Camp 2011sullis

The document discusses Android 3.1, which was designed for tablets and introduced new features like the holographic UI, action bar, fragments, drag and drop, and digital rights management API. It provides details on the Motorola XOOM tablet that launched with Android 3.1, including its specs. It also summarizes the new features in Android 3.x like fragments, which allow modularizing an app's UI and functionality. The document gives advice for app development on Android 3.1 and points to resources on API differences and best practices.

Android 3.0 Portland Java User Group 2011-03-15sullis

The document discusses Android 3.0, which introduced a new "holographic" UI for tablets. It describes the Motorola XOOM tablet, the first to use Android 3.0. Key features of Android 3.0 include the Action Bar, Fragments for modular app design, drag and drop, and a new Digital Rights Management API. The document also covers emulator performance issues and provides resources for Android 3.0 app development best practices.

GWT 2.0 - OSCON 2010sullis

The document summarizes the new features of GWT 2.0, which was released in December 2009. Key features included development mode improvements, speed tracing tools, developer-guided code splitting, compiler optimizations, declarative user interfaces through UiBinder, new layout panels, bundling resources via ClientBundle, using HtmlUnit for testing, and improvements to the Google Plugin for Eclipse. It also provides overviews of UiBinder, ClientBundle, code splitting, speed tracing and unit testing changes in GWT 2.0.

Programming WebSockets - OSCON 2010sullis

Sean Sullivan presented on WebSockets at OSCON in July 2010. WebSockets enable bidirectional communication between web browsers and servers through a standardized API and protocol. This allows for real-time applications like multiplayer games. Sullivan demonstrated how to use the JavaScript WebSocket API to open a connection and send/receive messages. He noted that browser support was growing but the protocol was still evolving. WebSockets provide an improvement over previous techniques like AJAX polling and Comet for real-time web applications.

Programming WebSockets - April 20 2010sullis

WebSockets allow for bidirectional communication between web browsers and servers. The presenter demonstrated WebSockets through a sample application and discussed browser support, the HTTP handshake process, and JavaScript and server-side APIs. WebSockets use ports 80 and 443 and an HTTP upgrade request to establish a persistent connection. Once connected, events like onopen, onmessage, and onclose enable asynchronous messaging between the client and server. Popular libraries provide WebSocket support for technologies like GWT, jQuery, Glassfish, and JBoss Netty.

WebDAV - April 15 2008sullis

This document provides an overview of the WebDAV protocol, clients, libraries, and programming. It discusses how WebDAV allows clients to manage files on remote servers by extending HTTP with methods like PROPFIND, LOCK, UNLOCK, and MOVE. It also covers useful open source libraries like mod_dav and Apache Jackrabbit, debugging tools like Fiddler, and advanced topics like security and Internet Explorer's handling of WebDAV folders.

GWT 2.0 - December 15 2009sullis

The document summarizes the new features of GWT 2.0, an open source JavaScript compiler for Java. Key highlights include improved developer tools like Speed Tracer for profiling applications, declarative user interfaces through UiBinder, enhanced layout panels, client-side resource bundling via ClientBundle, and improved unit testing with HtmlUnit. GWT 2.0 also features optimizations to the compiler as well as code splitting capabilities for faster loading of large applications.

Google App Engine - September 17 2009sullis

Google App Engine is a platform as a service that allows users to build and host web applications on Google's infrastructure. It provides the computing platform including operating system, scaling and maintenance. Developers write apps using Google-supported languages like Java and Python and App Engine handles everything required to run and scale those apps. It also includes several Google APIs to use services like datastore, mail and images. Users pay only for the resources their app uses on a per-request basis with free usage quotas.

Google App Engine - Portland Java User Group - August 18 2009sullis

Google App Engine is a platform as a service that allows developers to build and host web applications in Google's infrastructure. It provides scalable hosting for applications on Google's servers and includes services like Memcache, Data Store, and Google Accounts integration. The presentation discussed using App Engine, the Google Plugin for Eclipse, and the App Engine dashboard. It also covered using telephony in the cloud through Twilio's Java client library.

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Android is an open source software stack that includes an operating system, middleware and key applications for mobile devices. It was acquired by Google in 2005 and released as open source in 2007. The Android SDK provides tools and APIs for building applications that run on the Dalvik virtual machine. Applications are written in Java and distributed through Android Market or self-published websites. Future development may include additional text and speech capabilities.

Java and JSON - UJUG - March 19 2009sullis

OAuth and REST web servicessullis

Representational state transfer (REST) is an architectural style for distributed hypermedia systems like the World Wide Web. REST was introduced in 2000 by Roy Fielding in his doctoral dissertation. REST uses HTTP to access and manipulate representations of resources through a standardized interface and uniform resource identifiers. OAuth allows secure authorization of APIs by issuing access tokens to applications after user permission is granted. Popular Java libraries for building REST web services and clients include Jersey, JBoss RESTEasy, Apache CXF, and Restlet.

Introduction to Android - Mobile Fest Singapore 2009sullis

The document introduces Android, an open source software stack for mobile devices. It provides a brief history of Android's development including Google's acquisition in 2005, the launch of the Open Handset Alliance in 2007, and the release of the first Android phone, the HTC Dream, in 2008. The document also summarizes Android's system architecture, development tools, and how to create basic Android applications using activities and views.

Getting Started with Android - OSSPAC 2009sullis

The document provides an overview of Android including: 1) Android is an open source software stack that includes an operating system, middleware and key apps for mobile devices. 2) It was developed by Google and the Open Handset Alliance and the first Android phone was the HTC Dream released in 2008. 3) Android applications are developed using Java and run on the Dalvik virtual machine. The Android SDK provides tools for application development.

Introduction to Android - Mobile Portlandsullis

Android is an open source software stack that includes an operating system, middleware and key applications for mobile devices. It was developed by Google and the Open Handset Alliance. The document provides an overview of Android including its history, components, architecture, application development process, and resources for developers. It describes Android's goal of making the mobile platform more open and customizable for users and developers.

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Production Ready Web Services with Dropwizardsullis

Incremental deployment of new featuressullis

Comparing JSON Libraries - July 19 2011sullis

Android - Open Source Bridge 2011sullis

Android 3.1 - Portland Code Camp 2011sullis

Android 3.0 Portland Java User Group 2011-03-15sullis

GWT 2.0 - OSCON 2010sullis

Programming WebSockets - OSCON 2010sullis

Programming WebSockets - April 20 2010sullis

WebDAV - April 15 2008sullis

GWT 2.0 - December 15 2009sullis

Google App Engine - September 17 2009sullis

Google App Engine - Portland Java User Group - August 18 2009sullis

Domo Arigato Mr. Roboto - Open Source Bridge 2009sullis

Java and JSON - UJUG - March 19 2009sullis

OAuth and REST web servicessullis

Introduction to Android - Mobile Fest Singapore 2009sullis

Getting Started with Android - OSSPAC 2009sullis

Introduction to Android - Mobile Portlandsullis

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