I am saving my files in Document directory named 1.png, 2.png, 3.png, 4.png, 5.png. If I delete the original file 3.png, how do I rename files 4.png and 5.png to be called 3.png and 4.png respectively?
This is the code I am using to write the files in the first place:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
[appDel.photo addObject:#"photo"];
NSString *imageName = [NSString stringWithFormat:#"%i.png", [appDel.photo count]];
appDel.numberPhoto = [appDel.photo count];
NSString* path = [documentsDirectory stringByAppendingPathComponent:
imageName];
NSData* data = UIImagePNGRepresentation(image);
[data writeToFile:path atomically:YES];
To get NSDocuments directory use :
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:#"MyFile.txt"];
How to rename file you can find here:
How to rename a file using NSFileManager
If you do not know the names of the files in documents directory you can use :
NSArray *directoryContent = [fileManager contentsOfDirectoryAtPath:documentsDirectory error:nil];
This array contains all filenames you need. So you can rename them all.
Related
I have a folder containing a bunch of images. I would like to add the names of all the images to an array. The images are in a folder in my document on the app. See screen shot.
I know If I would like to get one of these images I would use the following code.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:#"%#/POIs/%#", documentsDirectory,image];
Is it posible to select all the files in the folder? If it is would it also be possible to select the names of the files and add them to an array?
Thanks
Get the file path of the POS folder:
NSString *filePath = [NSString stringWithFormat:#"%#/POIs", documentsDirectory];
and then do:
NSArray *files = [fileManager contentsOfDirectoryAtPath:filePath
error:nil];
code not tested
Try with below:
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
library = [path objectAtIndex:0];
fileArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:library error:nil];
NSLog(#"fileArray...%#",fileArray);
for(int i = 0;i<fileArray.count;i++)
{
id arrayElement = [fileArray objectAtIndex:i];
if ([arrayElement rangeOfString:#".png"].location !=NSNotFound)
{
[imagelist addObject:arrayElement];
arrayToLoad = [[NSMutableArray alloc]initWithArray:imagelist copyItems:TRUE];
}
}
You can do like this :
NSArray *directoryContent = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] error:NULL];
To set Image :
[imgView setImage:[UIImage imageWithContentsOfFile:"Your complete path"]];
I would like to know how can i write to a file within Application. The thing im trying to do here is, i am generating a KML (using class XMLWriter from https://github.com/skjolber/xswi). I can log the KML, everythings fine, now what i have to do is, Same this KML to a .kml file, and then email it to some address.
Emailing is no problem, i wanted to know how to write this KML into a .kml file, and then retrieve it for emailing. Can someone help me with a code snippet.
This tutorial did it, more then help.. The Code for generating the .kml file:
NSFileManager *filemgr;
NSData *databuffer;
NSString *dataFile;
NSString *docsDir;
NSArray *dirPaths;
filemgr = [NSFileManager defaultManager];
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
dataFile = [docsDir stringByAppendingPathComponent: #"datafile.kml"];
databuffer = [[xmlWriter toString] dataUsingEncoding: NSASCIIStringEncoding];
[filemgr createFileAtPath: dataFile contents: databuffer attributes:nil];
then to retrieve it i used:
NSFileManager *filemgr;
NSString *dataFile;
NSData *databuffer;
NSString *docsDir;
NSArray *dirPaths;
filemgr = [NSFileManager defaultManager];
// Identify the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
// Build the path to the data file
dataFile = [docsDir stringByAppendingPathComponent: #"datafile.kml"];
databuffer = [filemgr contentsAtPath: dataFile];
I believe you've got all your content into a string, if so you can proceed with saving it to .kml file with something like this:
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
NSString* fname = [tmp_FileName stringByAppendingFormat: #".kml" ];
NSString* filenameStr = [documentsDirectory
stringByAppendingPathComponent:fname];
[yourKMLString writeToFile: filenameStr atomically: YES];
Does anyone have a sample app or some sample code to generate a CSV file on iOS?
Here is a simple code to generate CSV file :
NSArray *csvArray = [myTextView.text componentsSeparatedByString:#"\n"];
NSString *csvString = [csvArray componentsJoinedByString:#","];
NSLog(#"csvString:%#",csvString);
// Create .csv file and save in Documents Directory.
//create instance of NSFileManager
NSFileManager *fileManager = [NSFileManager defaultManager];
//create an array and store result of our search for the documents directory in it
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//create NSString object, that holds our exact path to the documents directory
NSString *documentsDirectory = [paths objectAtIndex:0];
NSLog(#"Document Dir: %#",documentsDirectory);
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.csv", #"userdata"]]; //add our file to the path
[fileManager createFileAtPath:fullPath contents:[csvString dataUsingEncoding:NSUTF8StringEncoding] attributes:nil]; //finally save the path (file)
Following code I used for generating CSV.
NSMutableString *mainString=[[NSMutableString alloc]initWithString:#""];
for(int i=0;i<[commentArray count];i++ ) {
NSString *string=[[commentArray objectAtIndex:i]objectForKey:#"cmtName"];
string=[string stringByReplacingOccurrencesOfString:#"\"" withString:#"\"\""];
[mainString appendFormat:#"\"%#\"",string];
string=[[commentArray objectAtIndex:i]objectForKey:#"cmtDesc"];
string=[string stringByReplacingOccurrencesOfString:#"\"" withString:#"\"\""];
[mainString appendFormat:#",\"%#\"",string];
string=[[commentArray objectAtIndex:i]objectForKey:#"cmtType"];
string=[string stringByReplacingOccurrencesOfString:#"\"" withString:#"\"\""];
[mainString appendFormat:#",\"%#\"",string];
[mainString appendFormat:#",\"%#\"",string];
[mainString appendFormat:#"\n"];
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectoryPath stringByAppendingPathComponent:#"Docment.conf"];
NSData* settingsData;
settingsData = [mainString dataUsingEncoding: NSASCIIStringEncoding];
if ([settingsData writeToFile:filePath atomically:YES])
NSLog(#"writeok");
And for importing CSV you use this
https://github.com/davedelong/CHCSVParser
My CHCSVParser will both read and write CSV files on OS X and iOS. It comes with some examples of how to use it.
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
Can someone explain me why my code doesn't work?
//get the documents directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the
//documents directory:
NSString *fullFileName = [NSString stringWithFormat:#"%#/subscriptions", documentsDirectory];
[dataReply writeToFile:fullFileName atomically:NO];
NSData *getData=[[NSData alloc]initWithContentsOfFile:fullFileName];
infact if I try
NSString *string = [[NSString alloc] initWithData:getData encoding:NSASCIIStringEncoding];
while if I load myData without save it to my device it works! (So I'm sure that my data is not empty)
Try This,
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the
//documents directory:
NSString *fullFileName = [NSString stringWithFormat:#"%#/subscriptions", documentsDirectory];
[dataReply writeToFile:fullFileName atomically:NO];
Nsdata *getData=[fullFileName dataUsingEncoding:NSUTF8StringEncoding];