Please consider this code:
NSString *jsonreturn = [[NSString alloc] initWithContentsOfURL:[ NSURL URLWithString:url ]]; // Pulls the URL
NSLog(#"jsonreturn#########=%#",jsonreturn); // Look at the console and you can see what the restults are
NSData *jsonData = [jsonreturn dataUsingEncoding:NSUTF32BigEndianStringEncoding];
CJSONDeserializer *theDeserializer = [CJSONDeserializer deserializer];
theDeserializer.nullObject = NULL;
NSError *error = nil;
NSDictionary *dictt = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error];
NSLog(#"###dict=%#", dictt);
if (dictt) {
rowsForQuestion = [[dictt objectForKey:#"faqdetails"] retain];// NSArray rowsForQuestion
}
[jsonreturn release];
// I have got this data is in console NOW I WANT TO PRINT IT UITextView but HOW I can do it
faqdetails = (
{
faqAns = "Yes, Jack Kalis is the best crickter";
faqQues = "who is the best cricketer in present year?";
}
);
}
Your question isn't particularly clear regarding what you want to show where, but dropped text into a UITextView couldn't be easier.
[yourTextView setText: [[rowsForQuestion objectAtIndex: 0] objectForKey: #"faqQues"]];
The above code grabs the first dict from rowsForQuestion, and puts its value for #"faqQues" into a UITextView.
Assuming you have a UITextView instance called myTextView, made either programatically or through IB, try this:
[myTextView setText:faqdetails];
Related
I have some code that shows an UIAcvityViewController for exporting a custom object from my app, formatted as JSON. This code works fine in previous versions of iOS but now fails it iOS 11. The problem is that when the Activity View Controller displays, it does not display the Airdrop panel or available recipient devices at all. The document is an NSDictionary that is encoded and written to a NSData object and then written to disk and referenced by an NSURL. As I stated, this code worked fine and still works fine in previous versions of iOS. I also have another place where I am using the UIActivityViewController to export an image file, and Airdrop continues to work fine in iOS 11. I am assuming that the issue has to do with the format of the file being exported and referenced by the URL I am referencing in the url key of the ActivityProvider, but I have tried every way of outputting and encoding this object that makes sense. Here is the code I am using:
NSString *textToShare = #"I am sharing this record with you!";
NSURL* url = [self.record exportNoteToURL];
NSMutableArray* activityProviders = [[NSMutableArray alloc]initWithCapacity:0];
NoteRecordActivityProvider *provider = [[NoteRecordActivityProvider alloc] initWithPlaceholderItem:#{#"body":textToShare, #"url":url}];
[activityProviders addObject:provider];
//Initialize the ActivityViewController
UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:activityProviders applicationActivities:applicationActivities];
NSArray *excludeActivities = #[UIActivityTypePostToFacebook,
UIActivityTypePostToTwitter,
UIActivityTypePostToWeibo,
//UIActivityTypeMessage,
//UIActivityTypeMail,
//UIActivityTypePrint,
UIActivityTypeCopyToPasteboard,
UIActivityTypeAssignToContact,
UIActivityTypeSaveToCameraRoll,
UIActivityTypeAddToReadingList,
UIActivityTypePostToFlickr,
UIActivityTypePostToVimeo,
UIActivityTypePostToTencentWeibo,
//UIActivityTypeAirDrop,
UIActivityTypeOpenInIBooks];
activityController.excludedActivityTypes = excludeActivities;
[activityController setValue:[NSString stringWithFormat:#"Record: %#", self.record.title] forKey:#"subject"];
activityController.popoverPresentationController.barButtonItem = (UIBarButtonItem*)sender;
activityController.completionWithItemsHandler = ^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError) {
if (completed)
{
NSLog(#"The Activity: %# was completed", activityType);
}
else
{
NSLog(#"The Activity: %# was NOT completed", activityType);
}
[FileSystemProvider clearExportsDirectory];
};
[self presentViewController:activityController animated:YES completion:nil];
Following is the code that exports the dictionary to the URL, which seems to be working properly.
#pragma mark Document Export
-(NSURL*) exportNoteToURL
{
NSMutableDictionary* dict =[[NSMutableDictionary alloc]initWithCapacity:0];
// 1 Create Dictionary
NSDictionary* noteDict = [self getSettingsDictionary];
[dict setValue:noteDict forKey:#"Note"];
// 2 Get File Name and create file path
NSString* fullFilePath = [[FileSystemProvider documentPath]stringByAppendingPathComponent:#"Exports"];
NSLog(#"Export Path: %#", fullFilePath);
[MiscUtilities createDirectory:fullFilePath];
NSString* fileName = #"ExportedNoteRecord.lgz";
fileName = self.title;
fileName = [fileName stringByReplacingOccurrencesOfString:#" " withString:#""];
fileName = [MiscUtilities SanitizeFileNameString:fileName];
fileName = [NSString stringWithFormat:#"%#%#", fileName, #".lgz"];
fullFilePath = [fullFilePath stringByAppendingPathComponent:fileName];
// 3 Write dictionary to FileSystem
NSURL* url = [[NSURL alloc]initFileURLWithPath:fullFilePath];
BOOL res = [dict writeToURL:url error:&error];
if (res)
{
return url;
}
else
{
return nil;
}
}
The problem is that your activityViewControllerPlaceholderItem returns a Dictionary. The type you return here is used as an indication of what type of object you are vending. Airdrop doesn't want to receive a mysterious Dictionary so it doesn't respond. If what are vending is a file URL, you should have been returning a URL.
In my iPhone aplication I have a list of custom objects. I need to create a json string from them. How I can implement this with SBJSON or iPhone sdk?
NSArray* eventsForUpload = [app.dataService.coreDataHelper fetchInstancesOf:#"Event" where:#"isForUpload" is:[NSNumber numberWithBool:YES]];
SBJsonWriter *writer = [[SBJsonWriter alloc] init];
NSString *actionLinksStr = [writer stringWithObject:eventsForUpload];
and i get empty result.
This process is really simple now, you don't have to use external libraries,
Do it this way, (iOS 5 & above)
NSArray *myArray;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:myArray options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
I love my categories so I do this kind of thing as follows
#implementation NSArray (Extensions)
- (NSString*)json
{
NSString* json = nil;
NSError* error = nil;
NSData *data = [NSJSONSerialization dataWithJSONObject:self options:NSJSONWritingPrettyPrinted error:&error];
json = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return (error ? nil : json);
}
#end
Although the highest voted answer is valid for an array of dictionaries or other serializable objects, it's not valid for custom objects.
Here is the thing, you'll need to loop through your array and get the dictionary representation of each object and add it to a new array to be serialized.
NSString *offersJSONString = #"";
if(offers)
{
NSMutableArray *offersJSONArray = [NSMutableArray array];
for (Offer *offer in offers)
{
[offersJSONArray addObject:[offer dictionaryRepresentation]];
}
NSData *offersJSONData = [NSJSONSerialization dataWithJSONObject:offersJSONArray options:NSJSONWritingPrettyPrinted error:&error];
offersJSONString = [[NSString alloc] initWithData:offersJSONData encoding:NSUTF8StringEncoding] ;
}
As for the dictionaryRepresentation method in the Offer class:
- (NSDictionary *)dictionaryRepresentation
{
NSMutableDictionary *mutableDict = [NSMutableDictionary dictionary];
[mutableDict setValue:self.title forKey:#"title"];
return [NSDictionary dictionaryWithDictionary:mutableDict];
}
Try like this Swift 2.3
let consArray = [1,2,3,4,5,6]
var jsonString : String = ""
do
{
if let postData : NSData = try NSJSONSerialization.dataWithJSONObject(consArray, options: NSJSONWritingOptions.PrettyPrinted)
{
jsonString = NSString(data: postData, encoding: NSUTF8StringEncoding)! as String
}
}
catch
{
print(error)
}
Try like this,
- (NSString *)JSONRepresentation {
SBJsonWriter *jsonWriter = [SBJsonWriter new];
NSString *json = [jsonWriter stringWithObject:self];
if (!json)
[jsonWriter release];
return json;
}
then call this like,
NSString *jsonString = [array JSONRepresentation];
Hope it will helps you...
I'm a bit late to this party, but you can serialise an array of custom objects by implementing the -proxyForJson method in your custom objects. (Or in a category on your custom objects.)
For an example.
I have looked for an answer of a long time and still not found one so I thought I'd ask the question myself.
In my iPad app, I need to have the capability of parsing a .csv file in order to populate a table. I am using http://michael.stapelberg.de/cCSVParse to parse the csv files. However, I have only been successful in parsing local files. I have been trying to access a file from a server but am getting nowhere.
Here is my code to parse a local .csv file:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1)
{
//UITextField *reply = [alertView textFieldAtIndex:buttonIndex];
NSString *fileName = input.text;
NSLog(#"fileName %#", fileName);
CSVParser *parser = [CSVParser new];
if ([fileName length] != 0)
{
NSString *pathAsString = [[NSBundle mainBundle]pathForResource:fileName ofType:#"csv"];
NSLog(#"%#", pathAsString);
if (pathAsString != nil)
{
[parser openFile:pathAsString];
NSMutableArray *csvContent = [parser parseFile];
NSLog(#"%#", csvContent);
[parser closeFile];
NSMutableArray *heading = [csvContent objectAtIndex:0];
[csvContent removeObjectAtIndex:0];
NSLog(#"%#", heading);
AppDelegate *ap = [AppDelegate sharedAppDelegate];
NSManagedObjectContext *context = [ap managedObjectContext];
NSString *currentHeader = [heading objectAtIndex:0];
NSString *currentValueInfo = [heading objectAtIndex:1];
NSManagedObject *newObject = [NSEntityDescription insertNewObjectForEntityForName:#"Field" inManagedObjectContext:context];
[newObject setValue:#"MIS" forKey:#"header"];
[newObject setValue:currentHeader forKey:#"fieldName"];
for (NSArray *current in csvContent)
{
NSManagedObject *newField = [NSEntityDescription insertNewObjectForEntityForName:#"Field" inManagedObjectContext:context];
[newField setValue:currentHeader forKey:#"header"];
[newField setValue:currentValueInfo forKey:#"valueInfo"];
NSLog(#"%#", [current objectAtIndex:0]);
[newField setValue:[current objectAtIndex:0] forKey:#"fieldName"];
[newField setValue:[NSNumber numberWithDouble:[[current objectAtIndex:1] doubleValue]] forKey:#"value"];
}
NSError *error;
if (![context save:&error])
{
NSLog(#"Couldn't save: %#", [error localizedDescription]);
}
[self storeArray];
[self.tableView reloadData];
}
}
}
input.text = nil;
}
Forgive the weird beginning and ending brace indentation. :/
Anyway, so that is my code to take input from a user and access a file locally which I'm sure you guys have realized already. Now I want to know how to get the path of a file in my server.
Also if you guys see anything else wrong such as writing style and other bad habits please tell me as I'm new to iOS.
Thank you so much in advance! If you didn't understand my question please clarify as I'm bad at explaining myself at times! :)
As I am guessing you are trying to get data from a server's .csv file and want to show that data in table view list.
so I suggest you try to get that .csv file data in NSData and then work on that.
NSData *responseData = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"serverUrl"]];
NSString *csvResponseString = [[[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding] autorelease];
NSLog(#"responseString--->%#",csvResponseString);
Now try to use nsstring's method (componentsSeparatedByString) with coma (')
arrSepratedData = [[responseString componentsSeparatedByString:#","];
Now use this arr for UITableView data populate.
I'm having an issue properly accessing an NSDictionary built from Flickr data (the flickr.photosets.getPhotos call). Instead of just showing the content of a description tag, it reads the description tag… along with some unnecessary data and quotes.
For example:
NSLog (#"Item description readout: %#", itemDescriptionPre);
yields this response:
Item description readout: {
"_content" = "This is a caption from a photo drawn through Flickr";
}
I've tried to modify the NSString with this
NSString *descripTruncated = [itemDescriptionPre substringFromIndex:17];
But it didn't causes a crash at runtime. It also doesn't address the items at the end of the item. I apologize since NSString modifications seem to be talked about a lot here, but I couldn't find circumstances that mirror mine.
Here is some more context to my code:
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Storing incoming data");
NSDictionary *results = [jsonString JSONValue];
NSLog(#"Building NSDictionary.");
NSArray *photos = [[results objectForKey:#"photoset"] objectForKey:#"photo"];
NSLog(#"Building array from dictionary.");
// Loop through each entry in the dictionary...
for (NSDictionary *photo in photos)
{
NSString *title = [photo objectForKey:#"title"];
NSString *description = [photo objectForKey:#"description"];
[photoTitles addObject:title];
[photoDescriptions addObject:description];
}
NSLog(#"Nicer display for results: %# First image title: %# First image description: %#", results, [photoTitles objectAtIndex:0], [photoDescriptions objectAtIndex:0]);
[self updateDisplay];
}
-(void) updateDisplay{
NSString *capTitle = [[photoTitles objectAtIndex:0] uppercaseString];
photoTitleDisplay.text = capTitle;
NSString *itemDescriptionPre = [photoDescriptions objectAtIndex:0];
NSLog (#"Item description readout: %#", itemDescriptionPre);
}
itemDescriptionPre is actually an NSDictionary. This should work:
NSDictionary *itemDescriptionPre = [photoDescriptions objectAtIndex:0];
NSString *itemDescription = [itemDescriptionPre objectForKey:#"_content"];
I am new to ObC and have a problem that i just cant fix. There may be other issues as well but the main issue is this:
Starting the app
Press button = load new view
In the new viewDidLoad i call another object/function and send a NSMutableArray
Process data and send back a NSMutableArray
App crash, see comment where. Most often when i go back and back again but sometimes the first time
As i am new to this i guess i do a lot of this wrong but could someone nice take a look at the code and give me some advice. I would assume i have problem with releasing something.
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#" ");
NSLog(#"viewDidLoad ");
NSLog(#" ");
NSLog(#">>Processing prepareGame<<");
NSMutableArray *propArray1 = [[NSMutableArray alloc] initWithObjects:#"9999", nil]; //Init with dummy numbers
AccessPropertiesFile *readMyProperties = [AccessPropertiesFile new]; //Init function call to read file
NSLog(#"Prepare to call readProperties");
propArray1 = [readMyProperties readPropertiesFile:propArray1];
NSLog(#"Back from readProperties:error after this");
/*
for (NSString *element in propArray1) {
NSLog(#"Elements in prop2Array; %#", element);
}
*/
[readMyProperties release];
[propArray1 release];
}
-(NSMutableArray *)readPropertiesFile:(NSMutableArray *)readDataArray {
NSLog(#"Processing readProperties");
// For error information
NSError *error;
//Prepare File Manager
NSString *filePath = [self dataFilePath];
NSFileManager *fileMgr;
fileMgr = [NSFileManager defaultManager];
NSArray *propertiesArray = [NSArray alloc]; //Alloc array
//Check from what module the call is coming from to ecide what to do
if ([fileMgr fileExistsAtPath: filePath] == NO) {
NSLog (#"File not found");
//File does not exists, this is the first time the game starts
//Set up default parameters
NSString *fileString =#"0\n30\n30\n10\n1\n1\n1\n2\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n";
// Write default parameters to file
[fileString writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error];
propertiesArray = [fileString componentsSeparatedByString:#"\n"]; // each line, adjust character for line endings
}
else { //File exists
NSLog (#"File exists");
NSString *fileString = [NSString stringWithContentsOfFile:filePath
encoding:NSUTF8StringEncoding error:nil]; // reads file into memory as an NSString
propertiesArray = [fileString componentsSeparatedByString:#"\n"]; // each line, adjust character for line endings
}
//Clean readDataArray
[readDataArray removeAllObjects];
//Populate return array
for (NSString *element in propertiesArray) {
//NSLog(#"Elements in propertiesArray; %#", element);
[readDataArray addObject:element];
}
NSLog(#"readDataArray: %#", readDataArray);
[propertiesArray release];
[readDataArray autorelease];
NSLog(#"returning from readProperties");
return readDataArray;
}
#end
You are over-releasing readDataArray (known as propArray1 in the method that didn't create it). You create it and autorelease it in your second method, then you release it again at the end of your first method (where it wasn't created).
I suggest you use Analyze feature that comes with latest XCode. It is a good feature that I always use to track if I forget to release or release too much.
I also spotted that you also over-release the propertiesArray because it contains the result from [fileString componentsSeparatedByString:], which will be autorelease according to Cocoa convention.