Viewing a PDF with QLViewController in a WebView - ios

Question

Basically, I want to click a button in my web view that will download a PDF from a remote website and display it with a close/back button. I'm using QLViewController so people can pinch-zoom the PDF, and I'm using PhoneGap 3.0 with XCode 5 to code it.
Here's the code for my plugin that will show the new view with the back button but I can't seem to get the PDF to show. Any ideas?
#import "PDFViewer.h"
#import <Cordova/CDV.h>
#implementation PDFViewer
- (void)loadRemotePdf:(CDVInvokedUrlCommand*)command
{
CDVPluginResult* pluginResult = nil;
NSString *website = [command.arguments objectAtIndex:0];
NSString *filename = [command.arguments objectAtIndex:1];
if (website != nil && [website length] > 0) {
CGRect rect = [[UIScreen mainScreen] bounds];
CGSize screenSize = rect.size;
UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,screenSize.width,screenSize.height)];
webView.autoresizesSubviews = YES;
[webView canGoBack];
webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// NSURL *myUrl = [NSURL URLWithString:website];
// NSURLRequest *myRequest = [NSURLRequest requestWithURL:myUrl];
// [webView loadRequest:myRequest];
// [window addSubview: webView];
NSURL *url = [NSURL URLWithString:website];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory, filename];
[urlData writeToFile:filePath atomically:YES];
// Create test view controller
QLPreviewController *previewer = [[QLPreviewController alloc] init];
previewer.dataSource = self;
previewer.delegate = self;
// Create navigation controller
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:previewer];
[window addSubview: [nav view]];
[window makeKeyAndVisible];
}
pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK];
}
else {
pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR];
}
// return result
[self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
}
#pragma mark - QLPreviewControllerDataSource
- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)controller {
return 1;
}
- (id <QLPreviewItem>) previewController: (QLPreviewController *) controller previewItemAtIndex: (NSInteger) index;
{
NSURL *fileURL = [NSURL fileURLWithPath: filePath];
return fileURL;
}
#end

Answer 1

Yes, this can be done with the UIWebView.
If you are trying to display a PDF file residing on a server somewhere, you can simple load it to your web view directly:
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];
NSURL *targetURL = [NSURL URLWithString:#"http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];
[self.view addSubview:webView];
[webView release];
//Or if you have a PDF file bundled with your application (in this example named "document.pdf"):
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];
NSString *path = [[NSBundle mainBundle] pathForResource:#"document" ofType:#"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];
[self.view addSubview:webView];
[webView release];