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POHow to write an Intent to display file with only desired extensions in Android
 

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  1. POHow to write an Intent to display file with only desired extensions in Android
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    <p>I am developing an android app that encrypts/decrypts file.</p> <p>Once a file is encrypted, its extension changes to filename.encrypted ( here filename is itself a fully qualified filename like hello.pdf, so the encrypted file becomes hello.pdf.encypted).</p> <p>I have intregrated a file chooser intent in my app, so that user don't need to open a third party intent to choose the files.</p> <p>My problem is, while user selects to Encrypt a file, he should not be allowed to choose files that are already encrypted i.e. having the extension ".encrypted" and when they are trying to Decrypt a file they should only see the files with the extension ".encrypted".</p> <p>I have seen a lot of file chooser intents like (<a href="https://github.com/iPaulPro/aFileChooser" rel="nofollow noreferrer">https://github.com/iPaulPro/aFileChooser</a>) and (<a href="http://code.google.com/p/android-filechooser/" rel="nofollow noreferrer">http://code.google.com/p/android-filechooser/</a>) but none have the ability to customize the viewable/selectable files. I read a post (<a href="https://stackoverflow.com/questions/7856959/android-file-chooser">Android file chooser</a>) that says, it cannot be done, but I have seen apps that have implemented this feature.</p> <p>I am need of help in some resources or links that shows me how is that possible to achieve. I strongly believe the functionality is possible.</p> <p>Besides, I would also like my app to recognize the extension ".encrypted" when viewed from a third party file manager. I believe that is possible by indicating it in the Android Manifest, but I failed to make it possible. I read this post: <a href="https://stackoverflow.com/questions/4799576/register-new-file-type-in-android/8638084#8638084">Register new file type in Android</a> but could not do it.</p> <p>Looking for some help here.</p>
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