| author | Eugene Ostroukhov <eugeneo@symbian.org> |
| Tue, 11 May 2010 18:12:49 -0700 | |
| changeset 331 | 7e0aa6ca3db1 |
| parent 229 | 716254ccbcc0 |
| permissions | -rw-r--r-- |
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<!DOCTYPE html |
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><meta name="copyright" content="(C) Copyright 2009"/><meta name="DC.rights.owner" content="(C) Copyright 2009"/><meta name="DC.Type" content="concept"/><meta name="DC.Title" content="STEW: presenting content on screens"/><meta name="abstract" content="Implement functions to display the data that you retrieve from Twitter in the STEW views."/><meta name="description" content="Implement functions to display the data that you retrieve from Twitter in the STEW views."/><meta name="DC.Relation" scheme="URI" content="GUID-9405C97E-4784-4043-BA75-77518EF0A38F"/><meta name="DC.Relation" scheme="URI" content="GUID-71A21D8D-78E3-4FEE-9F46-5D175DE5BC12"/><meta name="DC.Relation" scheme="URI" content="GUID-775005BC-2FF8-45A9-BBA6-6CED6B5780A2"/><meta name="DC.Relation" scheme="URI" content="GUID-1FD5C597-43B8-402E-92B8-FE0787DB4F3B"/><meta name="DC.Format" content="XHTML"/><meta name="DC.Identifier" content="GUID-A3C4CDE4-4231-463D-B6A8-4969B91BDA0C"/><meta name="DC.Language" content="en"/><title>STEW: presenting content on screens </title><script type="text/javascript"> |
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function initPage() {}
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</script><link href="../PRODUCT_PLUGIN/book.css" rel="stylesheet" type="text/css"/><link href="css/s60/style.css" rel="stylesheet" type="text/css" media="all"/></head><body onload="initPage();"><div class="body"><div class="contentLeft prTxt"><h1 class="pageHeading" id="GUID-A3C4CDE4-4231-463D-B6A8-4969B91BDA0C">STEW: presenting content on screens</h1><div><p>Implement functions to display the data that you retrieve from Twitter in the STEW views.</p> |
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<p>The <code>UpdateScreen</code> object in the <code>UpdateScreen.js</code> file sets the <code>onSuccess</code> and <code>onError</code> callback functions to be handled by the <code>onTwitterUserResponse</code> and <code>onTwitterServiceError</code> functions. These functions are triggered when the request is completed, either successfully or with an error. The last line of the following code makes the actual request to Twitter:</p> |
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<pre class="codeblock">UpdateScreen.prototype.onActivated = function() {
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// Add event listeners. |
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var self = this; |
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twitterService.onSuccess = function( response ) {
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self.onTwitterUserResponse( response ) |
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} |
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twitterService.onError = function( status ) {
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self.onTwitterServiceError( status ) |
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} |
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// Start the request. |
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twitterService.getTweetsForUser( null, 1 ); |
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} |
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</pre> |
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<p>The <code>onTwitterUserResponse</code> function illustrates how the response is handled as a JavaScript object:</p> |
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<pre class="codeblock">UpdateScreen.prototype.onTwitterUserResponse = function( response ) {
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// Set my latest status update. |
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716254ccbcc0
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var tweet = response[0]; |
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716254ccbcc0
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this.setMyLatestStatus( tweet.text, |
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new Date( tweet.created_at ).toLocaleString() ); |
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} |
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UpdateScreen.prototype.onTwitterServiceError = function( status ) {
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alert("Error: (" + status + ")" );
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} |
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</pre> |
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<p>The <code>TwitterService</code> performs the necessary conversions. For more information, see <a href="GUID-71A21D8D-78E3-4FEE-9F46-5D175DE5BC12.html#GUID-71A21D8D-78E3-4FEE-9F46-5D175DE5BC12">STEW: implementing a Twitter service</a>. The data can be accessed by calling various properties on the object retrieved, such as <code>.text</code> or <code>.created</code>. For more information about the responses and requests that you can make, see the Twitter API documentation.</p> |
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</div></div></div><div class="footer"><hr/><div class="copy">© Nokia 2009.</div></div></body></html> |