how to download and open a doument in myapp in ios [closed] - ios

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I am new in IOS and making an app
1-First phase download attachment i.e. doc,ppt,and pdfs,xlsx (i hav done with that)
2-Second phase is open those attachment
Please surges me how to open those attachments
thanks in advance

You need to use UIDocumentInterationController . Tutorial for Opening the Documents

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