I need to get the already existing pdf files in the device and to upload the selected pdf to the server. I've added one pdf file to iBooks and then tried searching that file in directory using this code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSFileManager *fileManager = [NSFileManager defaultManager];
//NSError *error = nil;
NSArray *filesAtPath = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:nil];
NSLog(#"filesAtpath:%#",filesAtPath);
for (NSString *path in filesAtPath)
{
NSLog(#"add..");
if ([path rangeOfString:#".pdf"].length > 0)
{
//Do whatever you want with the pdf file
NSLog(#"pdf: %#",path);
}
}
but the log shows empty array, could you please tell me, is there any other method to get the pdf list in the device and select one to upload in the server.
No, Apple does not provide access to iBooks library in the same way that it provides some access to the Music library.
Related
I want to retrieve all the pdf documents from my iPhone, including all the pdf files that are stored in other apps like Adobe Acrobat.
What I have now is:
NSString *path = [NSSearchPathForDirectoriesInDomains(NSAllLibrariesDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSArray *directoryContent = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:nil];
for (NSString *fileName in directoryContent) {
if ([fileName hasSuffix:#"pdf"]) {
//add files to an array
}
}
Which only points to one directory.
Firstly you are only getting the first path to the first directory, so you're only searching that one. Secondly, apple suggests to use the NSFileManager to search. Thirdly, be aware that developers of other apps can save their documents in different places, that you can't access or are not returned by these functions (Just so you are aware of this).
If you want to get array of all pdf files in Document directory, then use below code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *arrPdfs = [[NSBundle bundleWithPath:[paths objectAtIndex:0]] pathsForResourcesOfType:#"pdf" inDirectory:nil];
arrPdfs will contain all pdfs in Document directory.
I have an iOS app which locates its database in what I believe is a fairly standard manner, viz:
+ (NSString *)dbPath
{
NSArray *a =
NSSearchPathForDirectoriesInDomains(NSCachesDirectory,
NSUserDomainMask, YES);
NSString *dir = [a objectAtIndex:0];
return [dir stringByAppendingPathComponent:[self dbFile]];
}
Here dbFile is a function that just returns the name of the database file.
Recently users have complained that the app sometimes fails to find its database. Is there anything I am doing wrong? I have not been keeping abreast of the latest changes in iOS.
I also save db in caches in current project.Whenever user run the app,it finds db correctly.Mainly I use with FMDB.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *documentsDirectory = [documentsDir stringByAppendingPathComponent:strFileName];
if (![[NSFileManager defaultManager] fileExistsAtPath:documentsDirectory])
{
NSString *backupDbPath = [[NSBundle mainBundle] pathForResource:#"DBName" ofType:#"sqlite"];
NSLog(#"Test backuppath %#",backupDbPath);
if (backupDbPath == nil)
{
NSLog(#"Database path is nil");
}
else
{
BOOL copiedBackupDb = [[NSFileManager defaultManager] copyItemAtPath:backupDbPath toPath:documentsDirectory error:nil];
if (!copiedBackupDb) NSLog(#"Copying database failed");
}
}
Now I remember.
An app store reviewer told me that I could not store the database in the directory that I originally intended to use, because its contents were downloaded from the internet. He was wrong of course, but I was having a lot of trouble with them at the time, so I just moved the database to the cache area as requested.
That is why is sometimes gets deleted.
My app stored downloaded audios and videos in document directory.Some users of app facing the problem that the content downloaded on their device getting disappeared with out any specific reason i.e app update. To save a file my path is as follows.
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
docsDir = dirPaths[0];
NSString *filepath = [NSString stringWithFormat:#"%#/%#_%#_%#", docsDir,username,audioId,fileName];
[[NSFileManager defaultManager] createFileAtPath:filePath contents:nil attributes:nil];
The username , audioID and fileName in my app never change. So only option left is that somehow the path of my document directory is changing at the time when app try to search for the saved files, as described in Apple Doc. So i just want to know if i am thinking in the write direction or there is some other reason behind disappearing of content?
create your docs dir as below:
NSString * docsDir = [[dirPaths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:#"%#_%#_%#", username, audioId, fileName]];
I have a folder called PhotoSet in my Xcode iOS App. I want to convert the UIImage to a jpg and put it into the folder. Here is what I have so far (by the way, if it is at all relevant, the UIImage is taken from a photo that the user takes):
NSData * imageData = UIImageJPEGRepresentation(chosenImage, 1.0);
if (imageData != nil) {
[imageData writeToFile:#"/Users/Toly/Desktop/PhotoMap/PhotoMap/PhotoSet/test.jpg" atomically:YES];
}
I get no errors or warnings. However, no picture gets saved to any folder. What should I do?
You need to write to a directory that is actually on the iPhone. Most of the time you'll want to write to the documents directory. You can get the path to it like this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
This gives you the base documents directory, if you want to place the folder in a sub directory you'll need to create that folder before you do like so.
NSString *folderPath = [documentsDirectory stringByAddingPathComponent:#"myFolder/images"];
NSError *error = nil;
NSFileManager *fm = [[NSFileManager alloc] init]
[fm createDirectoryAtPath:folderPath withIntermediateDirectories:YES attributes:nil error:&error];
Then to save your image data to that folder you'll do something like this
NSString *imageDataPath = [folderPath stringByAppendingPathComponent:#"myImage"];
BOOL success = [imageData writeToFile:imageDataPath];
Also, you can NSLog the imageDataPath it'll give you the exact location that file is saved so you can navigate to the actual file in finder if you're using the iOS simulator.
Your phone does not contain a data structure of files mirroring "/Users/Toly/Desktop/PhotoMap/PhotoMap/PhotoSet/test.jpg"
If you want the image to persist in memory, try using nsuserdefaults, or xcassets or Coredata. If you are absolutely intent on writing to a file, check out the NSCoding and NSFileManager tutorial below:
http://www.raywenderlich.com/1914/nscoding-tutorial-for-ios-how-to-save-your-app-data
I have created some PDF files programatically, which i am storing into the devices memory using the following code >>>>
NSString *fileName = [NSString stringWithFormat:#"SampleTextFile.pdf",strFinalString];
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *saveDirectory = [path objectAtIndex:0];
NSString *saveFileName = fileName;
NSString *documentPath = [saveDirectory stringByAppendingPathComponent:saveFileName];
I can see the file in the Devices Document folder.
I want to hide these files so that the user can not see or delete it.
Can anyone help me out to do this.
A good place to store private data is in ~/Library/Application Support/, which is the folder used on the Mac for this purpose.
You can generate a path to this folder using:
NSString *appSupportDir = [NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES) firstObject];
You'll have to create the folder yourself the first time you use it, which you can do with:
if (![[NSFileManager defaultManager] fileExistsAtPath:appSupportDir])
{
[[NSFileManager defaultManager] createDirectoryAtPath:appSupportDir withIntermediateDirectories:YES attributes:nil error:NULL];
}
I wrote a simple library that makes this and all other useful iOS folders available as methods on NSFileManager: https://github.com/nicklockwood/StandardPaths
Just prefix the filename with a dot, as in .SampleTextFile.pdf.
But the real solution is to not store the document in the NSDocumentDirectory in the first place. You should create subdirectory in the NSLibraryDirectory and store this stuff there. It also gets backed up and will not get purged like Caches and tmp, but the user cannot access it with iTunes.