iphone - Call a third party app from another app -

is possible launch iphone/ipad application within app? example in application if want user read document pdf file of installed apps on iphone or ipad pdfreaderlite. how can launch app app.

how can know installed apps support reading of documents , show list open of these apps app?

how url schemes installed apps?

you can use uidocumentinteractioncontroller show list installed apps can handle file.

uidocumentinteractioncontroller *controller = [[uidocumentinteractioncontroller interactioncontrollerwithurl:fileurl]; [controller presentopeninmenufrombarbuttonitem:somebaritem animated:yes]; 

this shows list of apps registered filetype , opens app if user selects one.