I have the following code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
However I am clueless as to how to get all the files names and assign them to an array?
Any help would be appreciated.
NSFileManager has a method called contentsOfDirectoryAtPath:error: that returns an array of all the files in that directory.
You can use it like this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
if([paths count] > 0)
{
NSString *documentsDirectory = [paths objectAtIndex:0];
NSError *error = nil;
NSArray *documentArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:&error];
if(error)
{
NSLog(#"Could not get list of documents in directory, error = %#",error);
}
}
The documentsArray object will contain a list of all the files in that directory.
Use NSFileManager's contentsOfDirectoryAtPath:error: method.
NSError *error;
NSFileManager* fileMgr = [NSFileManager defaultManager];
NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"];
NSArray* documentsArray = [fileMgr contentsOfDirectoryAtPath:documentsDirectory error:&error];
[documentsArray count];
Is another way of doing this for those with a different set up.
Related
I have an array by all the objects. I don't know which index contain which object. When I use this array I just use index number. How to find name of object at that index?
NSString *extension = #"png";
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *contents = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:nil];
NSMutableArray *pngFiles = [NSMutableArray arrayWithCapacity: [contents count]];
NSString *filename;
for (filename in contents)
{
if ([[filename pathExtension] isEqualToString:extension])
{
[pngFiles addObject:[UIImage imageWithContentsOfFile:[documentsDirectory stringByAppendingPathComponent:filename]]];
}
}
Instead of using an array use a dictionary. So you can save that image name and image
[pngFiles setObject:[UIImage imageWithContentsOfFile:[documentsDirectory stringByAppendingPathComponent:filename]] forKey:filename];
I have write code like this in Viewdidload method. But it don't create file .plist.
I don't know whether code is wi8 or wrong. And where i have to write?
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"data1.plist"]; //3
NSFileManager *fileManager = [NSFileManager defaultManager];
if ( ![fileManager fileExistsAtPath:path] ) {
NSString *pathToSettingsInBundle = [[NSBundle mainBundle]
pathForResource:#"data1" ofType:#"plist"];
}
You have just created a path to it, you should try loading it into a NSDictionary.
NSDictionary* mydictionary = [ NSDictionary dictionaryWithContentsOfFile: pathToSettingsInBundle];
Inside your if block add a second line
[fileManager copyItemAtPath:pathToSettingsInBundle toPath:path error:&error];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
plistpath = [[NSString alloc] initWithString:[documentsDirectory stringByAppendingPathComponent:#"Product.plist"]];
And then
[array writeToFile:path atomically:YES];
[Whatever [Array or Dictionary] you want to Write in Plist]
If it is still not creating the plist then check whether your array or dictionary must be empty.
I can load list of pdf files(all pdf files) from Resources folder, using this code.
NSArray *pdfs = [[NSBundle mainBundle] pathsForResourcesOfType:#"pdf" inDirectory:nil];
But I couldn't find a method to load list of pdf files from Documents Directory. The following line of code can only load one pdf at a time.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *file = [documentsDirectory stringByAppendingPathComponent:#"test.pdf"];
NSURL *urlPdf = [NSURL fileURLWithPath: file];
How could I load all pdf files from Documents Directory
Can you please give me a code example.
I was able to solve my issue using this line of code :)
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *pdfs = [[NSBundle bundleWithPath:[paths objectAtIndex:0]] pathsForResourcesOfType:#"pdf" inDirectory:nil];
Go with NSFileManager's contentsOfDirectoryAtPath and filter the result by hand for pdf files.
This answer maybe helpful.
You could do this
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error = nil;
NSArray *filesAtPath = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:error];
for (NSString *path in filesAtPath)
{
if ([path rangeOfString:#".pdf"].length > 0)
{
//Do whatever you want with the pdf file
}
}
I hope it helps, cheers
i have 3NSString objects that i want to save to a new file when the app is running.
this will help me for remote debug!
if any one can help me creating the file and save the data to it will be very use full
thanx
You can save the files to the Documents directory, here is how to get the path to that directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:fileName];
And a sample write statement:
NSError *error;
BOOL status = [string writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error];
In the NSString documentation there is method called writeToFile:atomically:encoding:error:.
NSError *error;
[#"Write me to file" writeToFile:#"<filepath>" atomically:YES encoding: NSUTF8StringEncoding error:&error];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents directory
NSError *error; BOOL succeed = [myString writeToFile:[documentsDirectory stringByAppendingPathComponent:#"myfile.txt"]
atomically:YES encoding:NSUTF8StringEncoding error:&error];
if (!succeed){
// Handle error here }
source.
Here is how to save NSString into Documents folder. Saving other types of data can be also realized that way.
- (void)saveString:(NSString *)stringToSave toDocumentsWithFilename:(NSString *)fileName {
NSString *documentsFolder = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"];
NSString *path = [documentsFolder stringByAppendingPathComponent:fileName];
[[NSFileManager defaultManager] createFileAtPath:path contents:[stringToSave dataUsingEncoding:NSUTF8StringEncoding] attributes:nil];
}
Usage:
NSString *stringWeWantToSave = #"This is an elephant";
NSString *fileName = [NSString stringWithString:#"savedString.txt"];
[self saveString:stringWeWantToSave toDocumentsWithFilename:fileName];
Currently I'm trying to access the files that are transferred using the new iOS feature introduced with 3.2.
- (NSString *)getPrivateDocsDir {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
documentsDirectory = [documentsDirectory stringByAppendingPathComponent:#"Private Documents"];
NSError *error;
[[NSFileManager defaultManager] createDirectoryAtPath:documentsDirectory withIntermediateDirectories:YES attributes:nil error:&error];
return documentsDirectory;
}
// and then in a method
NSString *documentsDirectory = [self getPrivateDocsDir];
NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:&error];
The problem is, this works fine in simulator, but on my iphone, the files array is empty.
Any ideas how to access this directory directly?
The Library-Directory is not accessible through iTunes, and "Private Documents" is inside this library directory.
The private documents, are, as the name suggests, private. They are intentionally not accessible through iTunes.
If you want to access the documents directory (which is accessible through itunes) replace this
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
with this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
EDIT:
Access the files like this.
- (NSString *)documentsDirectory {
return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
}
NSString *documentsDirectory = [self documentsDirectory];
NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:&error];