i have a problem for read a csv file. Only the last line of csv file is display.
However in my fetchedResultsController i have 2 lines
This is the code :
NSString * writeString;
NSInteger i = 0;
for (id object in [[self fetchedResultsController] fetchedObjects]) {
NSString * object1 = [[object valueForKey:#"object1"] description];
NSString * object2 = [[object valueForKey:#"object2"] description];
NSString * object3 = [[object valueForKey:#"object3"] description];
NSString * object4 = [[object valueForKey:#"object4"] description];
writeString = [NSString stringWithFormat:#"%#, %#, %#, %#, \n", object1, object2, object3, object4];
i++;
NSLog(#"%# - %i", writeString, i);
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* savePath = [paths objectAtIndex:0];
savePath = [savePath stringByAppendingPathComponent:#"myfile.csv"];
[writeString writeToFile:savePath atomically:YES encoding:NSUTF8StringEncoding error:NULL];
NSLog(#"%#", savePath);
NSString *fullPath = savePath;
[self readTitleFromCSV:fullPath AtColumn:0];
And The readTitleFromCSV method :
-(void)readTitleFromCSV:(NSString*)path AtColumn:(int)column
{
NSMutableArray *titleArray=[[NSMutableArray alloc]init];
NSString *fileDataString=[NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
NSArray *linesArray=[fileDataString componentsSeparatedByString:#"\n"];
int k=0;
for (id string in linesArray)
if(k<[linesArray count]-1){
NSString *lineString=[linesArray objectAtIndex:k];
NSArray *columnArray=[lineString componentsSeparatedByString:#","];
[titleArray addObject:[columnArray objectAtIndex:column]];
k++;
}
NSLog(#"%#",titleArray);
}
Thank you for your help.
Try to use NSMutableString instead of NSString:
NSMutableString *writeString = [NSMutableString string];
And then in the for loop:
[writeString appendString:[NSString stringWithFormat:#"%#, %#, %#, %#, \n", object1, object2, object3, object4]];
Related
I'm having a big trouble. I'd like to concatenate data of multiple textfiles into another textfiles. But I cannot. can you help me ? Many thanks
Read each file one by one,
NSString *firstFileContent = [NSString stringWithContentsOfFile:<your file path>
encoding:NSASCIIStringEncoding
error:nil];
//Similarly read other files, and store them in secondFileContent and thirdFileContent.
//now concatenate all to form one big string.
NSString *bigString = [NSString stringWithFormat:#"-First File- \n%# \n-Second File- \n%#\n-Third File-\n%#",firstFileContent, secondFileContent, thirdFileContent];
//write to file, create a new one
[bigString writeToFile:<path to write>
atomically:YES
encoding:NSASCIIStringEncoding
error:nil];
Edit 1 :
As per your comment that your file is in DocumentDirectory use this code :
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:<your file name>];
NSString *content = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:NULL];
First load content of file in NSString and use following code:
NSString *strConcatenate = [NSString stringWithFormat:#"%# %# %#", textfiles1, textfiles2, textfiles3];
NSLog(#"%#", strConcatenate);
You just have to load the content of the files into NSMutableString and concatenate them :
NSMutableString *myString = #"Content of the first file";
NSString *test = [myString stringByAppendingString:#" content of the second file"];
You need to read the text files in from the bundle and then append them, once you have that then write it back out. I wrote this example and I hope you can learn from it.
NSMutableString *mutableString = [[NSMutableString alloc] init];
NSArray *textFiles = #[ #"textfile1", #"textfile2", #"textfile3" ];
for (NSString *textFileName in textFiles) {
NSString *path = [[NSBundle mainBundle] pathForResource:textFileName
ofType:#"txt"];
NSError *error = nil;
NSString *content = [NSString stringWithContentsOfFile:path
encoding:NSUTF8StringEncoding
error:&error];
if (content) {
[mutableString appendFormat:#"%#\n", content];
} else {
NSLog(#"%#", error.localizedDescription);
}
}
NSLog(#"%#", mutableString);
NSError *error = nil;
BOOL result = [mutableString writeToFile:#"concatenated_file.txt" atomically:NO encoding:NSStringEncodingConversionAllowLossy error:&error];
if (!result) {
NSLog(#"%#", error.localizedDescription);
}
I am trying to fetch Images which i am storing in directory which i have shown in below code . I have tried a lot in StachOverFlow And Chats but not able to achieve the task . Actually i want to generate array of images from the array of filePath which are storing the path of images . Which i will show in UICollectionView . Please check my code and tell me what all can be done to achieve the needed . Thanks in advance
I have array of filepath already generated , i just want to fetch images from them and show it in grid view
-(void)plistRender{
// get paths from root direcory
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
// get documents path
NSString *documentsPath = [paths objectAtIndex:0];
// get the path to our Data/plist file
NSString *plistPath = [documentsPath stringByAppendingPathComponent:#"PhotoBucket.plist"];
//pngDATA.....
NSString *totalName = [NSString stringWithFormat:#"EGK_%# ", [NSDate date]];
PhotodocumentsPath = [paths objectAtIndex:0];
PhotofilePath = [PhotodocumentsPath stringByAppendingPathComponent:totalName]; //Add the file name
NSData *pngData = UIImagePNGRepresentation(printingImage);
//Write image to the file directory .............
[pngData writeToFile:[self documentsPathForFileName:PhotofilePath] atomically:YES];
[photos_URL addObject:PhotofilePath];
[photos addObject:totalName];
[grid_copy addObject:[NSNumber numberWithInteger:count]];
[grids addObject:whichProduct];
[Totalamount addObject:[NSNumber numberWithInteger:amt]];
NSDictionary *plistDictionary = [NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects: photos,grids,grid_copy,Totalamount,nil] forKeys:[NSArray arrayWithObjects: #"Photo_URL",#"Product",#"Copy",#"Amount", nil]];
NSString *error = nil;
// create NSData from dictionary
NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDictionary format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];
// check is plistData exists
if(plistData)
{
// write plistData to our Data.plist file
[plistData writeToFile:plistPath atomically:YES];
}
else
{
NSLog(#"Error in saveData: %#", error);
}
NSString *string = [[NSString alloc] initWithData:plistData encoding:NSUTF8StringEncoding];
NSLog(#" plist Data %#", string);
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"PhotoBucket"]){
RecipeCollectionViewController *photoBucket = [segue destinationViewController];
NSLog(#"Prepare Segue%#",photoBucket.photoCollection);
NSLog(#"Number of photos %#",photos_URL);
NSMutableArray *imgQueue = [[NSMutableArray alloc] initWithCapacity:photos_URL.count];
for (NSString* path in photos_URL) {
[imgQueue addObject:[UIImage imageWithContentsOfFile:path]];
}
photoBucket.photoCollection = imgQueue;
}
}
try this
for(int i=0;i<[filePathsArray count];i++)
{
NSString *strFilePath = [filePathsArray objectAtIndex:i];
if ([[strFilePath pathExtension] isEqualToString:#"jpg"] || [[strFilePath pathExtension] isEqualToString:#"png"] || [[strFilePath pathExtension] isEqualToString:#"PNG"])
{
NSString *imagePath = [[stringPath stringByAppendingFormat:#"/"] stringByAppendingFormat:strFilePath];
NSData *data = [NSData dataWithContentsOfFile:imagePath];
if(data)
{
UIImage *image = [UIImage imageWithData:data];
}
}
}
Hi you can fetch like this:
NSArray *pathPlist1 =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryStr1 = [pathPlist1 objectAtIndex:0];
NSString *plistLocation1 =
[documentsDirectoryStr1 stringByAppendingPathComponent:#"ImageStorage"];
NSFileManager *filemgr;
NSArray *filelist;
int i;
filemgr =[NSFileManager defaultManager];
filelist = [filemgr contentsOfDirectoryAtPath:plistLocation1 error:NULL];
NSLog(#"filelist =%lu",[filelist count]);
cacheImagesArray=[[NSMutableArray alloc] init];
cacheImagesDataArray=[[NSMutableArray alloc] init];
for (i = 0; i < [filelist count]; i++){
NSLog(#"%#", [filelist objectAtIndex: i]);
NSString *imageName=[NSString stringWithFormat:#"%#",[filelist objectAtIndex: i]];
NSString *path=[NSString stringWithFormat:#"%#/%#",plistLocation1, [filelist objectAtIndex: i]];
NSLog(#"Path is =%#",path);
NSData* data = [NSData dataWithContentsOfFile:path];
[cacheImagesDataArray addObject:data];
[cacheImagesArray addObject:imageName];
}
thanks
I have a text file that I download at launch from my website. It saves it to the Documents directory in the app. I want to read and process that text file and turn it into an NSArray.
I tried this:
- (NSArray *)articleReason {
NSString *filename3 = #"GameList.txt";
NSArray *pathArray3 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);
NSString *documentsDirectory3 = [pathArray3 objectAtIndex:0];
NSString *yourSoundPath3 = [documentsDirectory3 stringByAppendingPathComponent:filename3];
NSURL *url = [NSURL fileURLWithPath:yourSoundPath3 isDirectory:NO];
NSString *urlData = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
NSArray *parsed = [urlData componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
NSIndexSet *indexes = [parsed indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) {
NSRange range = [(NSString *)obj rangeOfString:#"Reason:"];
if (range.location != NSNotFound)
{
return YES;
}
return NO;
}];
NSArray *disallowed = [parsed objectsAtIndexes:indexes];
NSString * myString = [disallowed componentsJoinedByString:#" "];
disallowed = [myString componentsSeparatedByString:#"Reason: "];
return disallowed;
}
This does not work. The thing is, if I download the text file while making the NSArray, it ends up working. Here's that code:
- (NSArray *)articleReason {
NSString *stringURL = kGameURL;
NSURL *url = [NSURL URLWithString:stringURL];
NSString *urlData = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
NSArray *parsed = [urlData componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
NSIndexSet *indexes = [parsed indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) {
NSRange range = [(NSString *)obj rangeOfString:#"Reason:"];
if (range.location != NSNotFound)
{
return YES;
}
return NO;
}];
NSArray *disallowed = [parsed objectsAtIndexes:indexes];
NSString * myString = [disallowed componentsJoinedByString:#" "];
disallowed = [myString componentsSeparatedByString:#"Reason: "];
return disallowed;
}
Any idea why this is not working? I verified in the Documents directory that the text file is downloading correctly. I do the downloading of the file in didFinishLaunching in the App Delegate. Here's that code:
NSString *stringURL2 = kGameURL;
NSURL *url2 = [NSURL URLWithString:stringURL2];
NSString *urlData2 = [NSString stringWithContentsOfURL:url2 encoding:NSUTF8StringEncoding error:nil];
NSFileManager *fileManager2 = [NSFileManager defaultManager];
NSString *docsDirectory2 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *path2 = [docsDirectory2 stringByAppendingPathComponent:#"GameList.txt"];
[urlData2 writeToFile:path2 atomically:YES ];
Any help would be greatly appreciated.
Figured it out.
[urlData2 writeToFile:path2 atomically:YES ];
Writeto file needed it include the encoding.
I am trying to save an NSMutable Array and NSString into plist and then if it exists initialize the value from plist. However when I re run the app, the values do not get initialize as it is suppose to. So far the following is what I have.
if (self = [super init]) {
NSString *path=[self getFileUrl];
NSFileManager *fm = [[NSFileManager alloc] init];
if ([fm fileExistsAtPath:path]) {
_history = [d objectForKey:#"stringKey"];
class=[d objectForKey: #"ArrayKey"];
}
NSDictionary *d;
However the values are not getting initialized as per the plist. Is it the way I am extracting the values from the dictionary?
here is my function that saving json into plist in nscachesdirectory
-(void)saveproducts{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString* plistPath = [documentsPath stringByAppendingPathComponent:#"Products.plist"];
NSDictionary*dict = [NSDictionary dictionary];
NSMutableArray *types = [NSMutableArray array];
NSArray *dictArray = [NSArray array];
NSArray *dictKeys = [NSArray array];
NSArray *productObjects = [NSArray array];
NSArray *productKeys = [NSArray array];
for (int i=0; i<appDelegate.products.count; i++) {
NSMutableArray *tmpProds = [NSMutableArray array];
NSString *t_ID = [[appDelegate.products objectAtIndex:i] valueForKey:#"id"];
NSString *t_image = [[appDelegate.products objectAtIndex:i] valueForKey:#"image"];
NSString *t_name =[[appDelegate.products objectAtIndex:i] valueForKey:#"name"];
NSArray *products = [[appDelegate.products objectAtIndex:i] valueForKey:#"products"];
NSDictionary *productsDict = [NSDictionary dictionary];
for (int j=0; j<products.count; j++) {
NSString *p_id = [[products objectAtIndex:j] valueForKey:#"id"];
NSString *p_name = [[products objectAtIndex:j] valueForKey:#"name"];
NSString *p_name2 = [[products objectAtIndex:j] valueForKey:#"name2"];
NSString *image = [[products objectAtIndex:j] valueForKey:#"image"];
NSString *typeID = [[products objectAtIndex:j] valueForKey:#"type_id"];
NSString *active = [[products objectAtIndex:j] valueForKey:#"active"];
NSString *available = [[products objectAtIndex:j] valueForKey:#"available"];
NSString *desc = [[products objectAtIndex:j] valueForKey:#"description"];
NSString *price = [[products objectAtIndex:j] valueForKey:#"price"];
if ([p_name2 isEqual:[NSNull null]]) {
p_name2 =#"undefined";
}
if ([desc isEqual:[NSNull null]]) {
desc = #"";
}
productObjects = [NSArray arrayWithObjects:p_id,p_name,p_name2,image,typeID,active,available,desc,price, nil];
productKeys = [NSArray arrayWithObjects:#"id",#"name",#"name2",#"image",#"type_id",#"active",#"available",#"desc",#"price", nil];
productsDict = [NSDictionary dictionaryWithObjects:productObjects forKeys:productKeys];
[tmpProds addObject:productsDict];
if (![image isEqualToString:#""]) {
[foodImages addObject:image];
}
}
dictArray = [NSArray arrayWithObjects:t_ID,t_image,t_name,tmpProds, nil];
dictKeys = [NSArray arrayWithObjects:#"id",#"image",#"name",#"products", nil];
dict = [NSDictionary dictionaryWithObjects:dictArray forKeys:dictKeys];
[types addObject:dict];
}
NSDictionary* plistDict = [NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects:types, nil] forKeys:[NSArray arrayWithObjects:#"ptype", nil]];
NSString *error = nil;
NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];
if(plistData)
{
[plistData writeToFile:plistPath atomically:YES];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setBool:YES forKey:#"cached"];
[defaults synchronize];
}
else
{
NSLog(#"Error log: %#", error);
}
}
and this one reading plist
-(void)loadFromplist{
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString* plistPath = [documentsPath stringByAppendingPathComponent:#"Products.plist"];
NSData *plistData = [[NSFileManager defaultManager] contentsAtPath:plistPath];
NSDictionary *dict = (NSDictionary*)[NSPropertyListSerialization propertyListFromData:plistData mutabilityOption:NSPropertyListMutableContainersAndLeaves format:nil errorDescription:nil];
productsArray = [dict valueForKey:#"ptype"];
[self.tableView reloadData];
}
Saving data:
- (NSString *)dataFilePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kFilename];
}
- (void)applicationWillTerminate:(NSNotification *)notification
{
NSMutableArray *array = [[NSMutableArray alloc] init];
NSNumber *number = [NSNumber numberWithInt:points];
[array addObject:number];
[array writeToFile:[self dataFilePath] atomically:YES];
[array release];
}
Reading data:
BestLabel.text will display the high score. I get a warning: "assignment makes integer from pointer without a cast"
-(void)LoadData{
BestLabel.center = CGPointMake(150,300);
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
loadint = [array objectAtIndex:0];
NSString *myString35 = [NSString stringWithFormat:#"%d", loadint];
BestLabel.text = myString35;
[array release];
}
}
The sample code I got this from was saving and loading text fields with no problem.. I suppose I could do a string to int conversion, but that seems unnecessary. Thanks for your help!
EDIT:
- (void)applicationWillTerminate:(NSNotification *)notification
{
NSMutableArray *array = [[NSMutableArray alloc] init];
if (points > highscore){
NSString *myString35 = [NSString stringWithFormat:#"%d", points];
[array addObject:myString35];
}else {
NSString *myString35 = [NSString stringWithFormat:#"%d", highscore];
[array addObject:myString35];
}
NSNumber *number = [NSNumber numberWithInt:GreenBlot.center.x];
[array addObject:number];
NSNumber *number2 = [NSNumber numberWithInt:GreenBlot.center.y];
[array addObject:number2];
And now loading with:
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
BestLabel.text = [array objectAtIndex:0];
highscore = [[array objectAtIndex:0] intValue];
lx = [[array objectAtIndex:1] intValue];
ly = [[array objectAtIndex:2] intValue];
GreenBlot.center = CGPointMake( lx,ly);
[array release];
}
lx and ly are integers. I tried CGPointMake( [[array objectAtIndex:1] intValue], [[array objectAtIndex:2] intValue] ) first. Same results, GreenBlot is getting centered at 0,0. Any idea why?
The easiest thing to do is use NSNumber's intValue method:
loadint = [[array objectAtIndex:0] intValue];
You need the second line below:
loadint = [array objectAtIndex:0];
int score = [loadint intValue];
NSString *myString35 = [NSString stringWithFormat:#"%d", loadint];
If you are only saving one value, then use a NSDictionary with a key that makes it easier for you to label the value you are saving.
CGPointMake is defined:
CGPoint CGPointMake(
float x,
float y
)
You are taking GreenBlot.center.x which is presumably a float and feeding it to NSNumber as an int.... Go back and look at the types of your variables and change to [NSNumber numberWithFloat:...] and lx = [[array objectAtIndex:1] floatValue]; etc., as appropriate.
Also, you've created a different question in your editing of the original question.