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POOpen in... for custom file type works in iOS 5, 6 & 7 but not iOS 4
 

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  1. POOpen in... for custom file type works in iOS 5, 6 & 7 but not iOS 4
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    <p>I have an app that declares a custom file type (which is just some XML) and when iOS encounters this file on iOS 5, 6 &amp; 7, it knows what to do with it - my app fires up and the file imports just fine.</p> <p>However on iOS 4.3.3, the custom file type just seems to be thought of as plain text - the email client displays it as such and doesn't give the option to open the file in my app.</p> <p>Here are the appropriate parts of my app's Info.plist:</p> <pre><code> &lt;key&gt;CFBundleDocumentTypes&lt;/key&gt; &lt;array&gt; &lt;dict&gt; &lt;key&gt;CFBundleTypeName&lt;/key&gt; &lt;string&gt;iBlueSky Format&lt;/string&gt; &lt;key&gt;LSHandlerRank&lt;/key&gt; &lt;string&gt;Owner&lt;/string&gt; &lt;key&gt;LSItemContentTypes&lt;/key&gt; &lt;array&gt; &lt;string&gt;uk.co.tenero.ibluesky&lt;/string&gt; &lt;/array&gt; &lt;/dict&gt; &lt;/array&gt; &lt;key&gt;UTExportedTypeDeclarations&lt;/key&gt; &lt;array&gt; &lt;dict&gt; &lt;key&gt;UTTypeConformsTo&lt;/key&gt; &lt;array&gt; &lt;string&gt;public.data&lt;/string&gt; &lt;/array&gt; &lt;key&gt;UTTypeDescription&lt;/key&gt; &lt;string&gt;iBlueSky File&lt;/string&gt; &lt;key&gt;UTTypeIdentifier&lt;/key&gt; &lt;string&gt;uk.co.tenero.ibluesky&lt;/string&gt; &lt;key&gt;UTTypeTagSpecification&lt;/key&gt; &lt;dict&gt; &lt;key&gt;public.filename-extension&lt;/key&gt; &lt;array&gt; &lt;string&gt;bsky&lt;/string&gt; &lt;/array&gt; &lt;key&gt;public.mime-type&lt;/key&gt; &lt;string&gt;application/xml&lt;/string&gt; &lt;/dict&gt; &lt;/dict&gt; &lt;/array&gt; </code></pre> <p>Can anyone spot what I'm doing wrong?</p> <p>Support for manipulating files like this came in iOS 3.2, so it <em>should</em> work.</p> <p>I'm intending to drop support for iOS 4, 5 &amp; 6 in the next major update, but I would like to give users on older devices one more release with this functionality.</p>
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    1. USAndrew Ebling
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    1. CODo you have some analytics on how many users you have on iOS 4 ?
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      1. USWain
    2. CONot currently - I've evaluated a few analytics solutions, but haven't found one I'm completely happy with (toxic T&Cs, missing functionality etc.)
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      1. POOpen in... for custom file type works in iOS 5, 6 & 7 but not iOS 4
      1. USAndrew Ebling
    3. CONot that it solves the question, but it seems unlikely that you need to support iOS 4 any more.
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      1. USWain
 

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