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別再手刻 APIs Client 了 使用 Google APIs Client for Android Yuren Ju

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Yuren Ju ● Open Source Community – Kalug – COSCUP – Hacking Thursday ● Open Source Developer – Lazyscripts – Ubuntu 懶人包 – Mozilla Firefox OS ● Android Developer

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Web service API

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有很多種路可以走 ... ● 手刻 – HttpGet/HttpPost ● Restlet ● Google APIs Client for Java! http://www.flickr.com/photos/fractalthoughts/4903092759/in/photostream/

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Implementing an API method ● Build URL ● Get content (GET/POST) ● Convert to object

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手刻 http://www.flickr.com/photos/carnivillain/2048440745/

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Building URL

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Getting Content (GET)

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Getting Content (POST) http://blog.csdn.net/flying_tao/article/details/6553601

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Converting to object

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Google APIs Client Library for Java

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Example http:///api/emails/819284?email=yurenju@gmail.com verifyEmail(“819284”, “yurenju@gmail.com”).execute();

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Implementing an API method

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Parameters Mapping http:///api/emails/819284?email=yurenju@gmail.com

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GET v.s. POST

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POST

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Preconditions

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Implementing an API method

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Getting started! http://code.google.com/p/google-api-java-client/wiki/Setup

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Example service

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.jar files

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No!!!!!!!

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Create API Client

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Use Builder pattern

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HttpRequestInitializer

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Create Model

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Implement the API

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比較 ● Get content (GET/POST) ● Convert to object ● Preconditions ● Parameter mapping/Build URL

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OAuth https://github.com/yurenju/AndroidTwitterGoogleApiJavaClient

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Attention! Use xAuth on mobile! OAuth experience with pin code isn't good on mobile https://dev.twitter.com/docs/oauth/xauth

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Android app Twitter OAuthGetTemporaryToken OAuthAuthorizeTemporaryTokenUrl Listen OnLoadPageFinished and parse pin code in webpage Enter username and password Show pin code Done!

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OAuthGetTemporaryToken

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OAuthAuthorizeTemporaryTokenUrl

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Parse pin code in webview Don't do it on your production app, please use xAuth

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Conclusion ● Build URL ● Handle POST/GET Method ● Preconditions ● Android, GAE and Java SE Compatibility

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FAQ