I'm Using Leaves project to show my PDFs in my iphone project but i have a problem when i'm trying to display the pdf from the document not from bundle .. i think it's simple but have a trick i can't get cause i'm not guru in pdf reading :)
i'm using the following code
-(void) viewWillAppear:(BOOL)animated{
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDir = [documentPaths objectAtIndex:0];
pListPath = [ documentDir stringByAppendingPathComponent:[NSString stringWithFormat:#"%#",self.fileName]];
CFURLRef pdfURL = (CFURLRef)[NSURL fileURLWithPath:pListPath];
// CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("fekhElSunaI.pdf"), NULL, NULL);
pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);
NSLog(#"%#",pListPath);
// CFRelease(pdfURL);
[self init];
}
you'll notice that i've put the code in the viewWillAppear not in the init as leaves do ..
the pdf is not appear and not initialized
i've used the solution that is on this LINK and it didn't work either
so any one here have something to help me with :)
You've put the code in viewWillAppear, and that's probably your issue. Elsewhere the code might assume the code is already called, and the PDF already there. Try putting it in init, and see what happens. viewWillAppear might get called several times.
Use this code
- (id)init {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
myPathDocs = [documentsDirectory stringByAppendingPathComponent:#"abc.pdf"];
pdfURL = (CFURLRef)[NSURL fileURLWithPath:myPathDocs];
NSLog(#"myString %#",myPathDocs);
pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL); // }
size_t pageCount = CGPDFDocumentGetNumberOfPages(pdf);
}
for your Leavies View init function
Related
I have an app that is supposed to save to a file and later on load it. Now, I have not had ANY problems what so ever on ios 4, so this is perplexing. This has happened on all my apps saving and loading.
Heres the code:
- (NSString *)pathOfFile{
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsFolder = [paths objectAtIndex:0];
return [documentsFolder stringByAppendingFormat:#"awesome.plist"];
}
Later in in the app...
[array writeToFile:[self pathOfFile] atomically:YES];
And then when I attempt to load it...
if ([[NSFileManager defaultManager] fileExistsAtPath:[self pathOfFile]]) {
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filepath];
achi.text = [array objectAtIndex:0];
}
My app actually just skips over the if statement (Meaning that it can't find the file I think).
Please help, and if you have different methods of saving files, I would be glad to hear to hear them.
Your - (NSString *)pathOfFile method is wrong. It should be:
- (NSString *)pathOfFile
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsFolder = [paths objectAtIndex:0];
return [documentsFolder stringByAppendingPathComponent:#"awesome.plist"];
}
In your -(NSString *)pathOfFile method, don't use stringByAppendingFormat:. When working with file paths, you should instead use stringByAppendingPathComponent:, as it will ensure that the appropriate slash characters are added (or removed, if there are too many):
return [documentsFolder stringByAppendingPathComponent:#"awesome.plist"];
The comment to my question was what solved the problem, but as I can't give him the correct answer, I'll just write paste his answer here:
Did you make sure the directory is there? Sometimes that Documents directory must be created.
I have interesting thing here, I'm using xcode 4 for my project and I want to create simple .plist file to save several values which will be used for different purposes during code execution. This is the code I use to create plist:
- (NSString *)dataFilePath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:#"somelist.plist];
}
last line of code which should append plist name to path do not do its job. Plist is never created. Now, strange thing, i manage to create one few days ago using same code. After that, I only move this piece of code in AppDelegate because, I call this code from different places. I discovered that isn't working when I switch to 4.3 emulator and then also try it on iphone device. When I switch to 4.2 emulator it works because there is already a plist, however when I change its name (to create new one) nothing happens - meaning, list is not created. I also try moving code back to original place, but that didn't gave desired result.
Your code should not create a plist anyway, only return a path. In order to actually save a plist at the chosen path, you could choose several approaches, for example use the following method on NSDictionary:
- (void)saveDictionary
{
NSDictionary *dictionary = [NSDictionary dictionaryWithObject:#"bla" forKey:#"test"];
NSString *path = [self datafilePath];
[dictionary writeToFile:path atomically:YES];
}
- (NSString *)dataFilePath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:#"somelist.plist];
}
I am creating an app that needs access to the documents directory. I am currently using the following to return the URL of a file pdfName from the main bundle. Is there a similar way of getting the documents directory?
CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), (CFStringRef)pdfName, NULL, NULL);
Edit: this is my full code, but it isn't working - any ideas?
NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *myFilePath = [documentsDirectory stringByAppendingPathComponent:pdfName];
CFURLRef pdfURL = (CFURLRef)[NSURL fileURLWithPath:myFilePath];
pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL);
CFRelease(pdfURL);
I had the same problem. The app crashed when creating the CFURLRef. This is how i solved it (given you already have an NSString with the complete path to the file in documents directory):
CFURLRef pdfURL = (__bridge CFURLRef)[[NSURL alloc] initFileURLWithPath:myFilePath];
pdf = CGPDFDocumentCreateWithURL(pdfURL);
CFRelease(pdfURL);
Looks like the only difference in my code is that I alloc and init the NSURL.
This might help you: ADC Link
this seems to work fine in the simulator but on the device the files are not being written.
here's the code.
-(void)saveOld{
NSArray *saveState = [NSArray arrayWithObjects:headArray,dropQArray,[NSNumber numberWithInt:dropLimit],[NSNumber numberWithInt:dropCount],[NSNumber numberWithInt:score],[NSNumber numberWithInt:level],[NSNumber numberWithInt:maxChain],nil];
NSMutableString *path = [[NSHomeDirectory() mutableCopy]autorelease];
[path appendString:#"/saveState"];
BOOL saved = [NSKeyedArchiver archiveRootObject:saveState toFile:path];
NSLog(#"did save state %d",saved);
path = [[NSHomeDirectory() mutableCopy]autorelease];
[path appendString:#"/isSaveState"];
saved = [NSKeyedArchiver archiveRootObject:[NSNumber numberWithBool:1] toFile:path];
NSLog(#"did save state %d",saved);
}
There is no home directory on the iPhone :D
You should use this instead:
NSString *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
This will give you the basic documents directory, append strings to it then.
I am developing an iPhone app with someone else. The app works fine for me, but he is running into a bug. We think this bug is related to the fact that he is getting multiple Application directories for this same app. In my ~/Library/Application Support/iPhone Simulator/User/Applications, I only have one folder at all times.
He says that he will get 3 or 4 directories when he is only working on this one app. We think this is our problem because our bug has to do with displaying images that are stored in the app's Documents folder. Does anyone know why he is ending up with multiple directories or how to stop it?
Edit:
Here is the code for writing the image to a file:
NSData *image = [NSData dataWithContentsOfURL:[NSURL URLWithString:[currentArticle articleImage]]];
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *imagePath = [array objectAtIndex:0];
NSFileManager *NSFM = [NSFileManager defaultManager];
BOOL isDir = YES;
if(![NSFM fileExistsAtPath:imagePath isDirectory:&isDir])
if(![NSFM createDirectoryAtPath:imagePath attributes:nil])
NSLog(#"error");
imagePath = [imagePath stringByAppendingFormat:#"/images"];
if(![NSFM fileExistsAtPath:imagePath isDirectory:&isDir])
if(![NSFM createDirectoryAtPath:imagePath attributes:nil])
NSLog(#"error");
imagePath = [imagePath stringByAppendingFormat:#"/%#.jpg", [currentArticle uniqueID]];
[image writeToFile:imagePath atomically:NO];
And here is the code for getting the path when I need the image:
- (NSString *)imagePath
{
NSArray *array = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *imagePath = [array objectAtIndex:0];
return [imagePath stringByAppendingFormat:#"/images/%#.jpg", [self uniqueID]];
}
The app works great for me, but my partner says that the images don't show up intermittently, and he notices that he gets multiple directories in his Applications folder.
I had this problem (I was saving photos in the apps documents directory) and after every new build the directory get's renamed, so my paths were no longer valid. I cooked up these 2 functions (in my app delegate) that will give me a path for the file I want to save or load from the documents or temp directory. Even if the app directory changes, as long as you only store the file name and not the full path, and then use your helper functions to get the path when you need it later you will be ok. Here's my functions for this:
+ (NSString*)fullPathToFile:(NSString*)file {
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:file];
}
+ (NSString*)fullPathToTemporaryFile:(NSString*)file {
return [NSTemporaryDirectory() stringByAppendingPathComponent:file];
}
Works like a charm.