I am trying to develop an application for iPad using Sencha touch which needs to run a local PPT or PPSX file on a button click and return to main application after finishing the presentation .I am not sure whether this is possible.Please share your thoughts..Thanks in advance…
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If I understand your problem;
With sencha-touch, code runs on browser, so you could not access local files of users file system except he choose files with a file chooser(but in that case you must upload the file to server).
If you want to open a file without closing your app, you may open file in a new window.
I hope, this gives you some idea.