I am using Tableview to display Name from recipes Array which works great and displays all name in table view from recipes Array. When i tap on one of the recipe it displays the name on detailed view.
What i am stuck of is, how to display other fields in the detailed view.I have an Array ( array name: ingredients ) which has contents of that specific recipe, example ingredients.
I tried with
cell.textLabel.text = [ingredients objectAtIndex:indexPath.row];
RecipeDetailViewController.h
#import <UIKit/UIKit.h>
#interface RecipeDetailViewController : UIViewController
#property (nonatomic, strong) IBOutlet UILabel *recipeLabel;
#property (nonatomic, strong) NSString *recipeName;
#property (strong, nonatomic) IBOutlet UILabel *recipeCountry;
#property (nonatomic, strong) NSString *recipeCountryName;
#end
but it doesn't show anything in RecipeBookViewController.m
Here is my Original code
#import "RecipeBookViewController.h"
#import "RecipeDetailViewController.h"
#interface RecipeBookViewController ()
#end
#implementation RecipeBookViewController {
NSArray *recipes;
}
#synthesize tableView;
- (void)viewDidLoad
{
[super viewDidLoad];
NSData *allCourseData=[[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:#"http://api.kivaws.org/v1/loans/search.json?status=fundraising"]];
NSError *error;
NSMutableDictionary *JsonObject = [NSJSONSerialization
JSONObjectWithData:allCourseData options:NSJSONReadingMutableContainers
error:&error];
NSArray *loans = JsonObject[#"loans"];
// Create a new loans array for store the new items
NSMutableArray *newLoans = [NSMutableArray array];
NSMutableArray *arrCountry = [NSMutableArray array];
for (NSDictionary *loan in loans) {
NSNumber *ident = loan[#"id"];
NSString *name = loan[#"name"];
NSDictionary *description = loan[#"description"];
NSDictionary *location = loan[#"location"];
NSString *country = location[#"country"];
NSString *status = loan[#"status"];
NSDictionary *geo = location[#"geo"];
NSString *geoprint = geo[#"pairs"];
[newLoans addObject:name];
[arrCountry addObject:country];
}
recipes=newLoans;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [recipes count];
}
//Display Name in Detail View
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"RecipeCell";
//Displays name
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [recipes objectAtIndex:indexPath.row];
return cell;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
RecipeDetailViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [recipes objectAtIndex:indexPath.row];
}
}
#end
RecipeDetailViewController.m
#import "RecipeDetailViewController.h"
#interface RecipeDetailViewController ()
#end
#implementation RecipeDetailViewController
#synthesize recipeLabel;
#synthesize recipeName;
#synthesize recipeCountry;
#synthesize recipeCountryName;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Set the Label text with the selected recipe
recipeLabel.text = recipeName;
recipeCountry.text=recipeCountryName;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
Here are the screenshots of both Views
Changes in your loop;
for (NSDictionary *loan in loans) {
NSNumber *ident = loan[#"id"];
NSString *name = loan[#"name"];
NSDictionary *description = loan[#"description"];
NSDictionary *location = loan[#"location"];
NSString *country = location[#"country"];
NSString *status = loan[#"status"];
NSDictionary *geo = location[#"geo"];
NSString *geoprint = geo[#"pairs"];
[newLoans addObject:#[
#"name":name,
#"description":description,
#"country ":country
]]; // Same way add all keys
//Or
/*
NSMutableDictionary* dicData = [NSMutableDictionary dictionary];
newLoans[#"name"] = name;
newLoans[#"description"] = description;
newLoans[#"country"] = country;
[newLoans addObject:dicData];
*/
}
recipes=newLoans;
Change when retrieving;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
. . .
NSDictionary * dict = [recipes objectAtIndex:indexPath.row];
cell.textLabel.text = dict[#"name"];
return cell;
}
Same way pass the complete dictionary to the RecipeDetailViewController and show other information there.
Related
I am very new to Objective.I am trying to make a simple application and after adding more view I get this error "Thread 1 Signal SIGABRT" and the app wont open in iOS Simulator. The error points to this line of code:
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
I tried searching before but I didn't understand what the other answers were talking about.
NamesTableViewController.h is :
#import <UIKit/UIKit.h>
#interface NamesTableViewController : UITableViewController <UISearchDisplayDelegate, UISearchBarDelegate>
#property (strong, nonatomic) IBOutlet UISearchBar *searchBar;
#end
NamesTableViewController.m is:
#import "NamesTableViewController.h"
#interface NamesTableViewController ()
#property (nonatomic, copy) NSDictionary *propertyList;
#property (nonatomic, copy) NSArray *letters;
#property (nonatomic, copy)NSMutableArray *filteredNames;
#property (nonatomic, strong)UISearchController *searchController;
#end
#implementation NamesTableViewController
#synthesize propertyList, letters, filteredNames, searchController;
- (void)viewDidLoad {
[super viewDidLoad];
UITableView *tableView = (id)[self.view viewWithTag:1];
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
filteredNames = [[NSMutableArray alloc]init];
searchController = [[UISearchController alloc]init];
self.searchController.searchResultsUpdater = self;
NSString *path = [[NSBundle mainBundle] pathForResource:#"names" ofType:#"plist"];
self.propertyList = [NSDictionary dictionaryWithContentsOfFile:path];
self.letters = [[self.propertyList allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView.tag == 1){
return self.letters.count;
}else {
return 1;
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView.tag == 1) {
NSString *letter = self.letters[section];
NSArray *keyValues = [self.propertyList[letter] allKeys];
return keyValues.count;
} else {
return [filteredNames count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
if (tableView.tag == 1){
NSString *letter = self.letters[indexPath.section];;
NSArray *keyValues = [[self.propertyList[letter] allKeys] sortedArrayUsingSelector:#selector(compare:)];
cell.textLabel.text = keyValues[indexPath.row];
} else{
cell.textLabel.text = filteredNames[indexPath.row];
}
return cell;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return self.letters;
}
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (tableView.tag == 1) {
return letters [section];
} else {
return nil;
}
}
#pragma mark Search Display Delegate Methods
-(void)searchDisplayController:(UISearchController *)controller didLoadSearchResultsTableView:(UITableView *)tableView {
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
-(BOOL)searchDisplayController:(UISearchController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[filteredNames removeAllObjects];
if (searchString.length > 0) {
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [search] %#", self.searchBar.text];
for (NSString *letter in letters) {
NSArray *matches = [[self.propertyList[letter] allKeys]filteredArrayUsingPredicate:predicate];
[filteredNames addObjectsFromArray:matches];
}
}
return YES;
}
#end
If you want more information just say it to me by answers and I will edit my question and then you will edit your answer
[keys allKeys] returns an single-level array. Therefore there can be only one section.
Edit:
For better understanding and readability I replaced names with letters and keys with propertyList
• .h
The methods numberOfRowsInSection and cellForRowAtIndexPath retrieve the section letter and then the appropriate keys from the property list.
A dictionary as data source is not the best choice because there are many repetitive tasks to perform for example the sorting. Better create an nested array as data source in viewDidLoad
#interface NamesTableViewController ()
#property (nonatomic, copy) NSDictionary *propertyList;
#property (nonatomic, copy) NSArray *letters;
#end
• .m
#implementation NamesTableViewController
#synthesize propertyList, letters;
- (void)viewDidLoad {
[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:#"names" ofType:#"plist"];
self.propertyList = [NSDictionary dictionaryWithContentsOfFile:path];
self.letters = [[self.propertyList allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return self.letters.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSString *letter = self.letters[section];
NSArray *keyValues = [self.propertyList[letter] allKeys];
return keyValues.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
NSString *letter = self.letters[indexPath.section];
NSArray *keyValues = [[self.propertyList[letter] allKeys] sortedArrayUsingSelector:#selector(compare:)];
cell.textLabel.text = keyValues[indexPath.row];
return cell;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return self.letters;
}
#end
Evening,
I am in the process of configuring my detail view. The data is held in a plist file, each item having a word and definition. The cells in the tableview are labelled with the word. I am looking for each word to lead to the detail view showing both word and definition.
At the moment the code is showing the wrong word. I have been trying to set word and definition in the tableview.m and then use these to set the label in detail view.
So my query is why the wrong word is showing and how I can grab the correct definition to match the word.
My code is below.
Thank you.
#import "RCViewController.h"
#import "detailViewController.h"
#interface RCViewController ()
#end
#implementation RCViewController
static NSString *CellIdentifier = #"Cell Identifier";
#synthesize words;
#synthesize alphabetizedWords;
#synthesize wordDictionary;
-(NSDictionary *)alphabetizedWords:(NSArray *)wordsArray {
NSMutableDictionary *buffer = [[NSMutableDictionary alloc]init];
for (int i=0; i <words.count; i++) {
NSString *word = [words objectAtIndex:i];
NSString *firstLetter = [[word substringToIndex:1]uppercaseString];
if ([buffer objectForKey:firstLetter]) {
[(NSMutableArray *)[buffer objectForKey:firstLetter]addObject:word];
}
else {
NSMutableArray *mutableArray = [[NSMutableArray alloc]initWithObjects:word, nil];
[buffer setObject:mutableArray forKey:firstLetter];
}
}
NSArray *keys = [buffer allKeys];
for (int j; j<keys.count; j++) {
NSString *key = [keys objectAtIndex:j];
[(NSMutableArray *)[buffer objectForKey:key]sortUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
}
NSDictionary *result = [NSDictionary dictionaryWithDictionary:buffer];
return result;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
NSArray *keys = [self.alphabetizedWords allKeys];
return [keys count];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSArray *unsortedKeys = [self.alphabetizedWords allKeys];
NSArray *sortedKeys = [unsortedKeys sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
NSString *key = [sortedKeys objectAtIndex:section];
NSArray *wordsForSection = [self.alphabetizedWords objectForKey:key];
return [wordsForSection count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
NSArray *unsortedKeys = [self.alphabetizedWords allKeys];
NSArray *sortedKeys = [unsortedKeys sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
NSString *key = [sortedKeys objectAtIndex:[indexPath section]];
NSArray *wordsForSection = [self.alphabetizedWords objectForKey:key];
NSString *word = [wordsForSection objectAtIndex:[indexPath row]];
[cell.textLabel setText:word];
return cell;
}
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
NSArray *keys = [[self.alphabetizedWords allKeys]sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
NSString *key = [keys objectAtIndex:section];
return key;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// perform the segue by getting the cell selected and passing it to the prepareForSegue method
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[self performSegueWithIdentifier:#"showDetail" sender:cell];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if ([segue.identifier isEqualToString:#"showDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
detailViewController *destViewController = segue.destinationViewController;
destViewController.word = [words objectAtIndex:indexPath.row];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString *path = [[NSBundle mainBundle]pathForResource:#"words" ofType:#"plist"];
NSArray *wordsDictionary = [NSArray arrayWithContentsOfFile:path];
self.words = [wordsDictionary valueForKey:#"Word"];
self.alphabetizedWords = [self alphabetizedWords:self.words];
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:CellIdentifier];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
#import <UIKit/UIKit.h>
#interface detailViewController : UIViewController
#property (weak, nonatomic) IBOutlet UILabel *wordLabel;
#property (nonatomic, strong) NSString *word;
#property (weak, nonatomic) IBOutlet UILabel *definitionLabel;
#property (strong, nonatomic)NSString *definition;
#end
#import "detailViewController.h"
#interface detailViewController ()
#end
#implementation detailViewController
#synthesize word;
#synthesize wordLabel;
#synthesize definition;
#synthesize definitionLabel;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
wordLabel.text = word;
definitionLabel.text = definition;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
#end
You need to use the same logic in prepareForSegue to get your word that you use in cellForRowAtIndexPath,
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if ([segue.identifier isEqualToString:#"showDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
detailViewController *destViewController = segue.destinationViewController;
NSArray *unsortedKeys = [self.alphabetizedWords allKeys];
NSArray *sortedKeys = [unsortedKeys sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
NSString *key = [sortedKeys objectAtIndex:[indexPath section]];
NSArray *wordsForSection = [self.alphabetizedWords objectForKey:key];
NSString *word = [wordsForSection objectAtIndex:[indexPath row]];
destViewController.word = word;
}
}
Having a dictionary called alphabetizedWords is pretty pointless, since dictionaries are inherently unordered. You should set up your data structure in an array. Perhaps you want an array of dictionaries, where each dictionary contains a word in one key and the definition in the other key. You can sort the array and use to feed the table view data source, and also to respond to a tap and pass the info to your detail view controller.
I want to be able to set a label's text to be what is selected from the table view.
#interface STAdvancedBACViewController ()
#property (nonatomic, copy) NSDictionary *brand;
#property (nonatomic, copy) NSArray *keys;
#property (nonatomic, copy) NSMutableArray *filteredNames;
#property (nonatomic, strong) UISearchDisplayController *searchController;
#property (nonatomic, copy) NSDictionary *beerValues;
#property (nonatomic, copy) NSArray *beerKeys;
#end
#implementation STAdvancedBACViewController {
}
#synthesize brand, keys, filteredNames, searchController, beerValues, beerKeys;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UITableView *tableView = (id)[self.view viewWithTag:1];
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
NSString *path = [[NSBundle mainBundle] pathForResource:#"A" ofType:#"plist"];
brand = [NSDictionary dictionaryWithContentsOfFile:path];
keys = [[brand allKeys]sortedArrayUsingSelector:#selector(compare:)];
filteredNames = [[NSMutableArray alloc]init];
searchController = [[UISearchDisplayController alloc]init];
searchController.searchResultsDataSource = self;
NSString *path2 = [[NSBundle mainBundle] pathForResource:#"BEER2" ofType:#"plist"];
beerValues = [NSDictionary dictionaryWithContentsOfFile:path2];
beerKeys = [[beerValues allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView.tag == 1) {
return [keys count];
}
else{
return 1;
}
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
cell.textLabel.text = keyValues[indexPath.row];
}
else{
cell.textLabel.text = filteredNames[indexPath.row];
}
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView.tag == 1) {
NSString *key = keys[section];
NSArray *keyValues = brand[key];
return [keyValues count];
}
else {
return [filteredNames count];
}
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
if (tableView.tag ==1) {
return keys;
}
else {
return nil;
}
}
- (NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (tableView.tag ==1) {
return keys[section];
}
else {
return nil;
}
}
#pragma mark
- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView {
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[filteredNames removeAllObjects];
if (searchString.length > 0) {
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [search] %#", self.searchBar.text];
for (NSString *key in keys) {
NSArray *matches = [brand[key]filteredArrayUsingPredicate:predicate];
[filteredNames addObjectsFromArray:matches];
}
}
return YES;
}
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath {
_testLabel.text = keys[indexPath.row];
}
#end
For some reason this does not return the value in the cell but returns a letter from the Plist file. The plist file was organized such that there were 26 objects that were arrays for each letter of the alphabet and then those were arrays containing the beer names. Basically I want to retrieve the beer name selected by the user.
Though your question is a bit unclear, but I guess you want a label to be the name of the brand that the user selected. In your cellForRowAtIndexPath you are doing this:
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
cell.textLabel.text = keyValues[indexPath.row];
}
else{
cell.textLabel.text = filteredNames[indexPath.row];
}
But in your didDeselectRowAtIndexPath you are just doing this:
_testLabel.text = keys[indexPath.row];
Shouldn't you be doing this in didDeselectRowAtIndexPath:
//Plan your logic accordingly. Its just a rough
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
_testLabel.text = keyValues[indexPath.row];
}
else{
_testLabel.text = filteredNames[indexPath.row];
}
Hope this helps.. :)
I'm struggling to populate a Table View using JSON Data from Youtube (V 2.1) which has been parsed(Logged the output in the console)
Every time I am loading the Table View Controller, nothing is populated. I have even created a 'Video' class (NSObject). I'm struggling to understand what I'm doing wrong.
The following is my code:
Video.h
#import <Foundation/Foundation.h>
#interface Video : NSObject
#property (nonatomic, strong) NSString *title;
#property (nonatomic, strong) NSString *description;
#property (nonatomic, strong) NSString *thumbnail;
#property (nonatomic, strong) NSString *uploadedDate;
#property (nonatomic, strong) NSURL *url;
// Designated Initializer
- (id) initWithTitle:(NSString *)title;
+ (id) videoWithTitle:(NSString *)title;
- (NSURL *) thumbnailURL;
- (NSString *) formattedDate;
#end
Video.m
import "Video.h"
#implementation Video
- (id) initWithTitle:(NSString *)title {
self = [super init];
if ( self ){
self.title = title;
self.thumbnail = nil;
}
return self;
}
+ (id) videoWithTitle:(NSString *)title {
return [[self alloc] initWithTitle:title];
}
- (NSURL *) thumbnailURL {
// NSLog(#"%#",[self.thumbnail class]);
return [NSURL URLWithString:self.thumbnail];
}
- (NSString *) formattedDate {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSDate *tempDate = [dateFormatter dateFromString:self.uploadedDate];
[dateFormatter setDateFormat:#"EE MMM,dd"];
return [dateFormatter stringFromDate:tempDate];
}
#end
Table View Controller implementation file (the one I'm trying to populate)
#import "FilmyViewController.h"
#import "Video.h"
#interface FilmyViewController ()
#end
#implementation FilmyViewController
- (void)viewDidLoad
{
[super viewDidLoad];
NSURL *videoURL = [NSURL URLWithString:#"http://gdata.youtube.com/feeds/api/users/OrtoForum/uploads?v=2&alt=jsonc"];
NSData *jsonData = [NSData dataWithContentsOfURL:videoURL];
NSError *error = nil;
NSDictionary *dataDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];
NSLog(#"%#",dataDictionary);
self.videoArray = [NSMutableArray array];
NSArray *videosArray = [dataDictionary objectForKey:#"items"];
for (NSDictionary *vDictionary in videosArray) {
Video *video = [Video videoWithTitle:[vDictionary objectForKey:#"title"]];
video.title = [vDictionary objectForKey:#"title"];
video.description = [vDictionary objectForKey:#"author"];
video.uploadedDate = [vDictionary objectForKey:#"uploaded"];
video.url = [NSURL URLWithString:[vDictionary objectForKey:#"url"]];
[self.videoArray addObject:video];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [self.videoArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
Video *video = [self.videoArray objectAtIndex:indexPath.row];
// Configure the cell...
cell.textLabel.text = video.title;
cell.textLabel.text = video.description;
return cell;
}
/*
#pragma mark - Navigation
// In a story board-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
#end
Here's the JSON which I'm trying to extract from.
I looked for similar topics but didn't get any appropriate solution for this.
Research Link-one and Link-two is what i have been trying to follow.
Please let me know if there is any better approach for this.
What am i missing here?
Solution
Changed
NSArray *videosArray = [dataDictionary objectForKey:#"items"];
to:
NSArray *videosArray = dataDictionary[#"data"][#"items"];
Change
NSArray *videosArray = [dataDictionary objectForKey:#"items"];
to
NSArray *videosArray = dataDictionary[#"data"][#"items"];
Your items array is in the second level: rootJSON -> data -> items
I think just showing my whole code is better than my explanation.. actually I'm not good at expressing something in English.X(
this code is .h file for .m file below.
#import <UIKit/UIKit.h>
#define kImageValueTag 0
#define kNameValueTag 1
#define kSubtitleValueTag 2
#define kMemoValueTag 3
#class PhonebookDetailedViewController;
#interface PhonebookViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
UITableViewCell *tvCell;
UITableView *tableView;
UISearchBar *searchBar;
NSString *fullName;
NSMutableDictionary *names, *pictures;
NSArray *keys, *sortedKeys, *sortedAllValues;
PhonebookDetailedViewController *childController;
}
#property (nonatomic, retain) IBOutlet UITableViewCell *tvCell;
#property (nonatomic, retain) IBOutlet UISearchBar *searchBar;
#property (nonatomic, retain) IBOutlet UITableView *tableView;
#property (nonatomic, retain) UIImage *phoneImage;
#property (nonatomic, retain) NSString *fullName;
#property (nonatomic, retain) NSMutableDictionary *names;
#property (nonatomic, retain) NSMutableDictionary *pictures;
#property (nonatomic, retain) NSArray *keys;
#property (nonatomic, retain) NSArray *sortedKeys;
#property (nonatomic, retain) NSArray *sortedAllValues;
#end
this code is for the .m file that implement showing a table. When I try to scroll the table down, the error named EXC_BAD_ACCESS is suddenly called at - (NSString *)tableView: titleForHeaderInSection: method. I guess sortedKeys releases at somewhere because I can do [sortedKeys count] before error, but cannot when error comes. I don't know where it releases and why it releases, however. Please show your ideas to me. Any ideas are okay. Thank you in advance.
#import "PhonebookViewController.h"
#import "PhonebookDetailedViewController.h"
#import "NSString-SortForIndex.h"
#implementation PhonebookViewController
#synthesize tvCell;
#synthesize searchBar;
#synthesize tableView;
#synthesize phoneImage;
#synthesize fullName;
#synthesize names, pictures;
#synthesize keys, sortedAllValues, sortedKeys;
//- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
//{
// self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
// if (self) {
// // Custom initialization
// }
// return self;
//}
//- (void)didReceiveMemoryWarning
//{
// // Releases the view if it doesn't have a superview.
// [super didReceiveMemoryWarning];
//
// // Release any cached data, images, etc that aren't in use.
//}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect bounds = self.tableView.bounds;
bounds.origin.y = bounds.origin.y + searchBar.bounds.size.height;
self.tableView.bounds = bounds;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *nameFilePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"nameContacts.dict"];
NSString *pictureFilePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"imageContacts.dict"];
self.names = (NSMutableDictionary *)[NSKeyedUnarchiver unarchiveObjectWithFile:nameFilePath];
self.pictures = (NSMutableDictionary *)[NSKeyedUnarchiver unarchiveObjectWithFile:pictureFilePath];
self.keys = [self.names allKeys];
sortedKeys = [self.keys sortedArrayUsingSelector:#selector(sortForIndex:)];
sortedAllValues = [[NSArray alloc] init];
for (NSString *sortedKey in sortedKeys)
{
NSArray *selectedValues = [self.names valueForKey:sortedKey];
for (NSString *selectedValue in selectedValues)
sortedAllValues = [sortedAllValues arrayByAddingObject:selectedValue];
}
// Do any additional setup after loading the view from its nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.tableView = nil;
self.searchBar = nil;
self.tvCell = nil;
self.fullName = nil;
self.names = nil;
self.pictures = nil;
self.keys = nil;
self.sortedKeys = nil;
self.sortedAllValues = nil;
}
- (void)dealloc
{
[tableView release];
[searchBar release];
[tvCell release];
[fullName release];
[names release];
[pictures release];
[keys release];
[sortedKeys release];
[sortedAllValues release];
[super dealloc];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table Data Source Methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [sortedKeys count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSString *key = [sortedKeys objectAtIndex:section];
NSArray *nameSection = [names objectForKey:key];
return [nameSection count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CustomCellIdentifier = #"CustomCellIdentifier";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CustomCellIdentifier];
if ( cell == nil )
{
NSArray *nib = [[NSBundle mainBundle]
loadNibNamed:#"CustomPhonebookCell"
owner:self
options:nil];
if (nib.count > 0)
{
cell = self.tvCell;
} else
{
NSLog(#"Failed to load CustomPhonebookCell nib file!");
}
}
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
NSUInteger row = [indexPath row];
NSUInteger section = [indexPath section];
NSString *foundKey = [sortedKeys objectAtIndex:section];
NSArray *nameSection = [self.names objectForKey:foundKey];
UILabel *nameLabel = (UILabel *)[cell viewWithTag:kNameValueTag];
nameLabel.text = [nameSection objectAtIndex:row];
return cell;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSString *key = [sortedKeys objectAtIndex:section]; // EXC_BAD_ACCESS error at here
return key;
}
sortedKeys is not properly retained. When you set it use self.
self.sortedKeys = [self.keys sortedArrayUsingSelector:#selector(sortForIndex:)];