objective c - Show downloaded PDF file with webView ios -

i'm making iphone app, download pdf file , display in webview. script not show downloaded pdf. download , save in documents, webview not show it.

here's script:

nsstring *path = [[nsbundle mainbundle] pathforresource:@"3" oftype:@"pdf"]; nsurl *urlen = [nsurl fileurlwithpath:path]; nsmutableurlrequest *urlrequest = [nsmutableurlrequest requestwithurl:urlen]; [webview loadrequest:urlrequest]; [webview setscalespagetofit:yes]; 

from official documentation on nsurl official documentation on nsurl.

sending nil argument fileurlwithpath: produces exception.

the problem [[nsbundle mainbundle] pathforresource:oftype:]. returning nil, rather actual path file.

the problem here [nsbundle mainbundle] refers files bundle app. need in app's document directory, stores files has downloaded.

this method give path app's document directory:

nsstring* documentspath = [nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes) firstobject]; 

now, append file name path:

nsstring *pdfpath = [documentspath stringbyappendingpathcomponent:@"3.pdf"]; 

and measure (because crashes bad), make sure file exists such:

bool fileexists = [[nsfilemanager defaultmanager] fileexistsatpath:pdfpath]; 

and finish such:

if (fileexists) {     nsurl *urlen = [nsurl fileurlwithpath:pdfpath];     nsmutableurlrequest *urlrequest = [nsmutableurlrequest requestwithurl:urlen];     [webview loadrequest:urlrequest];     [webview setscalespagetofit:yes]; } else {     // let user know there's sort of problem }