I have a few pdf's in my app that are kept online. I set the advanced properties to allow caching. However if I load the file in the app, then exit the app and turn on airplane mode, and go back into my app to view the pdf file it's not available. I get a message saying there was a problem downloading some data.... Shouldn't this work if the pdf file was cached?

Seems like it should. Do this: Run the app in the simulator with an internet connection. Load the .PDF screen. Next, look in the simulators documents directory to see if the app downloaded and saved the .PDF. My sims documents directory is here: /Users/davidbook/Library/Application Support/iPhone Simulator/4.2/Applications/UNIQUE APP ID HERE If it's not saved, check the console to see if an error is reported.

Hi David, I have a similar issue. I have about 15 pdf files in my app, they are all hosted in dropbox but it seems the iPhone Simulator is not caching them at all. Here is what the console shows: 2011-07-16 21:36:56.130 appID[47691:207] BT_screen_webView: Downloading URL, not caching, could not determine localFileName 2011-07-16 21:36:56.141 appID[47691:207] BT_screen_webView: shouldStartLoadWithRequest: URL: http://my.dropbox.url/u/123456/public-folder/catalogos/myverycoolpdf.pdf 2011-07-16 21:36:56.141 appID[47691:207] BT_screen_webView: shouldStartLoadWithRequest: SCHEME: http The images seems to be caching alright but none of the pdfs are caching. I have set the Force Refresh option on the Document Behavior settings to No, allow caching. I believe it has something to do with the could not determine localFileName. Do you know what's going on?

Yup...could not determine localFileName is for sure the issue. The idea is that the device needs to 'create' a local file name to save the PDF. In your URL example, it should be trying to save the one listed as 'myverycoolpdf.pdf' If you provide a local file name in the control panel, and no URL, it won't work. That approach is for files you include in the project before you compile it. When you do provide a URL and no local file name in the control panel the code tries to figure out the file name. It does this by looking at the URL and getting the 'end' of it. This is probably not happening? Maybe do this: In the BT_Screens folder find and open BT_screen_webView.m and scroll down to about line 66 or so. You'll see where the logic is here to determine which file name to use. On line 71 you'll see how it gets the file name from the URL. Do an NSLog statement directly after this line: self.localFileName = [self.dataURL lastPathComponent]; and see what it figured out? Open the console while it's running to see the NSLog statement. Not sure what you'll come up with but that's were to start.

Thanks for the help David. I'm sorry, but now I have even more questions! =) I did some research on NSLog in Xcode but I'm not sure I'm doing it right. Newbie question: What am I supposed to see after this NSLog statemet? I wrote NSLog(@PDF) right after the line self.localFileName = [self.dataURL lastPathComponent]; but I'm not sure what it did. (I'm lost but trying!) I was watching the console (and the BT_screen_webView.m code) and I think its somehow forcing a refresh. Could that be the problem? Or is it forcing a refresh just because it didn't download the file in the first place? But even if it was forcing a refresh, there's nothing to do with the localFileName problem, right? I don't understand why the code is unable to solve the filename for the PDF document, it does everything fine for the images. Don't they use the same method for the caching? Does the file size have any influence in this? The PDF files are about 8 to 12mb. I appreciate your help and your patience.

NO worries... So, NSLog statements print output to the Console. Their useful when debugging. To use it, it's NSLog(@'what to print'); The single quotes I entered here should be double in Xcode, the forum doesn't all double quotes. Crazy. The reason it's forcing the refresh is because it's not understanding how to save the file. I agree that it should be but it's not. We need to figure out why and logging the file name it pulled from the URL on line 71 is the place to start. If it's successfully getting the file name from the URL there, we'll continue down the line to see why it's not saving it.

Ok, will try that later and I'll get back to you.

I'm having a similar issue with my PDF's not caching on the device. did anyone workout why and what the solution to the problem is?

Hi Trevally: Were you able to see the output console to try to determine where the app was looking for the PDF? It should donwload it once, save it, then re-use it until it's refreshed. Open the output console with the app running to see where it's finding the PDF. a) Launch app in Xcode. Simulator or device connected, either way is fine. b) Open the console c) Navigate to the PDF screen in the app d) Look at the last dozen or so lines of the console to see if you can figure out where it's reading the PDF from.

David, I am having the same issue with PDF files. The console reads.. BT_screen_webView: Downloading URL, not caching, could not determine localFileName Not sure how to use the NSlog() statement. Charlie

Has anyone found a solution yet?

Having the same issue. Getting: 2011-12-02 00:37:24.603 nlc[2270:707] BT_screen_webView: showProgress 2011-12-02 00:37:24.607 nlc[2270:707] BT_viewUtilities: getProgressView 2011-12-02 00:37:24.613 nlc[2270:707] BT_screen_webView: Downloading URL, not caching, could not determine localFileName

David, I have not tried it on a device yet only the simulator. the following are lines 79 - 83 of BT_screen_webView.m ------------------------------------------------------------------ 79: //if we have a dataURL, and no localFileName, figure out a name to use... 80: if(self.localFileName.length < 3 && self.dataURL.length > 3){ 81: 82: //self.localFileName = [BT_strings getFileNameFromURL:self.dataURL]; 83: //local file name is NOT COMING from the URL! -------------------------------------------------------------------- When I uncommented line 82 it seemed to fix the problem. I am very new at this and I do not know if this is right. Can someone check if I am correct?

Has anyone found a solution yet? I have a similar problem... file pdf not caching. Thanks

Seeing the same thing here. Without the cached data you can not email a PDF doc either. I am using V1.5 IOS.