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POPlaying WebAudio API automatically in iOS 6
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  1. POPlaying WebAudio API automatically in iOS 6
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    copied!<p>I was performing some tests with the WebAudio API in iOS6. It seems that when you click on a button, the AudioBufferSourceNode will be created correctly and connected to the Contexts destination.</p> <p>I was simply wondering if there was any way of playing a sound automatically when a page is loaded, as iOS6 devices seem to build the SourceNode correctly, but no sound comes out.</p> <p>I have posted my code below:</p> <pre><code>&lt;!doctype html&gt; &lt;html lang="en"&gt; &lt;head&gt; &lt;meta charset="utf-8"&gt; &lt;title&gt;HTML 5 WebAudio API Tests&lt;/title&gt; &lt;script type="text/javascript"&gt; var audioContext, audioBuffer; function init() { try { audioContext = new webkitAudioContext(); initBuffer('resources/dogBarking.mp3'); } catch(e) { console.error('webkitAudioContext is not supported in this browser'); } } function initBuffer(desiredUrl) { var url = desiredUrl || ''; var request = new XMLHttpRequest(); request.open("GET", url, true); request.responseType = "arraybuffer"; request.onload = function() { audioContext.decodeAudioData(request.response, function(buffer) { audioBuffer = buffer; }, onError); } request.send(); } function playSound(startTime, endTime) { var audioSource = audioContext.createBufferSource(); audioSource.buffer = audioBuffer; audioSource.connect(audioContext.destination); audioSource.noteOn(0); audioSource.noteOff(10); } &lt;/script&gt; &lt;/head&gt; &lt;body onload="init()"&gt; &lt;script type="text/javascript"&gt; (function() { var buttonNode = document.createElement('input'); buttonNode.setAttribute('type', 'button'); buttonNode.setAttribute('name', 'playButton'); buttonNode.setAttribute('onclick', 'playSound(0, 1)') buttonNode.setAttribute('value', 'playSound()'); document.body.appendChild(buttonNode); document.write('&lt;a id="test" onclick="playSound(0, 2)"&gt;hello&lt;/a&gt;'); var testLink = document.getElementById('test'); var dispatch = document.createEvent('HTMLEvents'); dispatch.initEvent("click", true, true); testLink.dispatchEvent(dispatch); }()); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>I hope this makes sense. Kind regards, Jamie.</p>
 

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