In my app, I have a map that allows the user to drop pins onto the map. The pins geocode the address and set the address as their title. I made it so that the annotations are stored in an array when they are dropped. I have a tableview, that I want to show the addresses in the cells. I have an array in the tableview class that points to the array in the first view controller, and I somehow need to access the addresses from the array and set them as the textlabels of the cells. I already have the table view display as many cells as there are pins on the map, but I do not know how to access the information I need from the array. Here is some code to help.
Here is the first view controller:
#implementation P2OViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[_worldView setShowsUserLocation:YES];
NSInteger mapTypeValue = [[NSUserDefaults standardUserDefaults]
integerForKey:P2OMapTypePrefKey];
// Update the UI
[mapTypeControl setSelectedSegmentIndex:mapTypeValue];
// Update the map
[self changeMapType:mapTypeControl];
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self
action:#selector(press:)];
[longPress setMinimumPressDuration:0.5f]; //user needs to press for 2 seconds
[longPress setDelegate:self];
[_worldView addGestureRecognizer:longPress];
_annotationArray = [[NSMutableArray alloc]init];
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]init];
[_worldView addGestureRecognizer:pan];
number = [NSNumber numberWithInt:0];
}
-(void)press:(UILongPressGestureRecognizer *)recognizer
{
CGPoint touchPoint = [recognizer locationInView:_worldView];
CLLocationCoordinate2D touchMapCoordinate = [_worldView convertPoint:touchPoint toCoordinateFromView:_worldView];
geocoder = [[CLGeocoder alloc]init];
CLLocation *location = [[CLLocation alloc]initWithCoordinate:touchMapCoordinate
altitude:CLLocationDistanceMax
horizontalAccuracy:kCLLocationAccuracyBest
verticalAccuracy:kCLLocationAccuracyBest
timestamp:[NSDate date]];
[geocoder reverseGeocodeLocation:location
completionHandler:^(NSArray *placemarks, NSError *error) {
NSLog(#"reverseGeocoder:completionHandler: called");
if (error) {
NSLog(#"Geocoder failed with error: %#", error);
} else {
CLPlacemark *place = [placemarks objectAtIndex:0];
geocodedAddress = [NSString stringWithFormat:#"%# %#, %# %#", [place subThoroughfare], [place thoroughfare], [place locality], [place administrativeArea]];
if (UIGestureRecognizerStateBegan == [recognizer state]) {
value = [number intValue];
number = [NSNumber numberWithInt:value + 1];
addressPin = [[MapPoint alloc]initWithAddress:geocodedAddress coordinate:touchMapCoordinate
title:geocodedAddress identifier:number];
NSLog(#"The identifier is %#", number);
[_annotationArray addObject:addressPin];
[_worldView addAnnotation:addressPin];
NSLog(#"The number of pins in the annotation array is: %u",_annotationArray.count);
}
}
}];
}
-(void)mapView:(MKMapView *)mapView
annotationView:(MKAnnotationView *)view
calloutAccessoryControlTapped:(UIControl *)control
{
PinViewController *pvc = [[PinViewController alloc]init];
[[self navigationController]pushViewController:pvc
animated:YES];
pvc.label.text = view.annotation.title;
}
- (IBAction)bookmarkPressed:(id)sender
{
P2OTableViewViewController *tvc = [[P2OTableViewViewController alloc]initWithStyle:UITableViewStyleGrouped];
[tvc setValue:_annotationArray];
[[self navigationController]pushViewController:tvc
animated:YES];
}
#end
Here is my TableViewController
#import <UIKit/UIKit.h>
#class P2OViewController;
#interface P2OTableViewViewController : UITableViewController
{
NSMutableArray *_pinArray;
__weak P2OViewController *_pvc;
}
#property (readonly) UILabel *textLabel;
#property (weak,nonatomic) P2OViewController *pvc;
#property (strong,nonatomic) NSMutableArray *pinArray;
-(void)setValue:(NSMutableArray *)value;
#end
#implementation P2OTableViewViewController
#synthesize pinArray = _pinArray, pvc = _pvc;
- (id)init
{
self = [super initWithStyle:UITableViewStyleGrouped];
if (self) {
_pinArray = [[NSMutableArray alloc]init];
}
return self;
}
-(void)setValue:(NSMutableArray *)value
{
_pinArray = value;
}
-(id)initWithStyle:(UITableViewStyle)style
{
return [self init];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return _pinArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
return cell;
}
So basically I want the title of the annotations in the array to be the textlabel for the cells. So if there are 5 pins in the array, I want the 5 cells to have the corresponding addresses of the annotations (the title property) as the textlabels. I would appreciate the help.
Before return cell;, you can do cell.textLabel.text = [_pinArray objectAtIndex:indexPath.row] Make sure you're extracting the title property from _pinArray.
Related
I am newbie to ios...please help me in solving this.i need to display map view in next view controller by tapping the row of a table view...
Here is my json:
[{"storeId":"STORE001","name":"Creamstone","latitude":"17.441934745594924","longitude":"78.45833734609187","storeAddress":"Begumpet, OPP: HPS","storeCity":"Hyderabad"},{"storeId":"STORE002","name":"Cream Stone","latitude":"17.37732708258546","longitude":"78.49484514445066","storeAddress":"near malakpet railway station\r\nchaderghat","storeCity":"Hyderabad"}]
here is my LocationTable.m
#import "LocationTable.h"
#import "LocationViewController.h"
#import "Stores.h"
#interface LocationTable ()
{
NSDictionary *coordinates;
}
#end
#define getStores #"http://192.168.28.9:8080/FoodCart/rest/storersrc/storebycity/hyderabad"
#implementation LocationTable
#synthesize json,locations;
- (void)viewDidLoad {
[super viewDidLoad];
self.title = #"Locations";
[self.tableView reloadData];
[self retrieveData];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"LocationCell"];
Stores *location = [locations objectAtIndex:indexPath.row];
cell.textLabel.text = location.name;
cell.detailTextLabel.text = location.storeAddress;
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
LocationViewController*lvc = [[LocationViewController alloc] init];
Stores *currentlocation = [locations objectAtIndex:indexPath.row];
lvc.latitude= currentlocation.latitude;
lvc.longitude=currentlocation.longitude;
[self.navigationController pushViewController:lvc animated:YES];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return locations.count;
}
-(void)retrieveData
{
NSError*error;
NSURL * url = [NSURL URLWithString:getStores];
NSData*data = [NSData dataWithContentsOfURL:url];
json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
locations = [[NSMutableArray alloc] init];
for(int i=0;i<json.count;i++)
{
NSString * cStoreId = [[json objectAtIndex:i] objectForKey:#"storeId"];
NSString * cName = [[json objectAtIndex:i] objectForKey:#"name"];
NSNumber * cLatitude = [[json objectAtIndex:i] objectForKey:#"latitude"];
NSNumber * cLongitude = [[json objectAtIndex:i] objectForKey:#"longitude"];
NSString * cStoreAddress = [[json objectAtIndex:i] objectForKey:#"storeAddress"];
Stores *mylocations = [[Stores alloc] initWithstoreId:(NSString *) cStoreId andname:(NSString *) cName andlatitude:(NSNumber *) cLatitude andlongitude:(NSNumber *) cLongitude andstoreAddress:(NSString *) cStoreAddress];
[locations addObject:mylocations];
}
}
#end
Here is my LocationViewController.m:
#import "LocationViewController.h"
#import "MapView.h"
#import "LocationTable.h"
#interface LocationViewController ()
#property (nonatomic,strong) NSNumber *latitude;
#property (nonatomic,strong) NSNumber *longitude;
#property (nonatomic,strong) IBOutlet MKMapView *Mapview;
#end
#implementation LocationViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.Mapview.delegate = self;
MapView *mapPoint = [[MapView alloc] init];
mapPoint.coordinate = CLLocationCoordinate2DMake([self.Stores.latitude doubleValue], [self.Stores.longitude doubleValue]);
// Add it to the map view
[self.Mapview addAnnotation:mapPoint];
// Zoom to a region around the pin
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(mapPoint.coordinate, 500, 500);
[self.Mapview setRegion:region];
self.title = self.Stores.name;
}
Method Declaration Of MKAnnotationView
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
MKPinAnnotationView *view = nil;
static NSString *reuseIdentifier = #"MapView";
view = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
if(!view) {
view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];
view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
view.canShowCallout = YES;
view.animatesDrop = YES;
}
return view;
}
#end
my jsonactivity is get data from url into table View , but now I want to display that data (latitude and longitude) on map view in the next View Controller, How Could I do this ? please help me, thanks in advance !
If the LocationViewController defined in a storyboard file, then you should create him via the next method:
[[UIStoryboard storyboardWithName:<your_storyboard_name> bundle:nil] instantiateViewControllerWithIdentifier:<your_controller_identifier>];
Otherwise, all IBOutlet-objects will be a nil.
I am using parse as back-end for my app. I have found a few different methods to implement searchbar feature using a Parse tableview. This idea I found from Parse archives shows all objects on initial view and refresh, but when I search it does not return the correct results. If I type one letter "a" it returns some objects containing "a" but if I type more letters or and actual word that I know should be found it returns a blank table. It is also giving a warning when searching: A long-running Parse operation is being executed on the main thread. I have been working and researching this for a few weeks and can't get past this point. See code for implementation file.
#import "RecipeBookViewController.h"
#import "SearchedResultCell.h"
#import "RecipeDetailViewController.h"
#import "HotelViewController.h"
#import "Recipe.h"
static NSString *const NothingFoundCellIdentifier = #"NothingFoundCell";
#interface RecipeBookViewController ()
#end
#implementation RecipeBookViewController {
}
#synthesize searchedBar;
#synthesize searchResults;
#synthesize recipesTable;
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// Custom the table
// The className to query on
self.parseClassName = #"Recipe";
// The key of the PFObject to display in the label of the default cell style
self.textKey = #"name";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = NO;
// The number of objects to show per page
//self.objectsPerPage = 10;
}
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 - UIViewController
- (void)viewDidLoad
{
[super viewDidLoad];
UINib *cellNib = [UINib nibWithNibName:NothingFoundCellIdentifier bundle:nil];
[self.tableView registerNib:cellNib forCellReuseIdentifier:NothingFoundCellIdentifier];
[self.searchedBar becomeFirstResponder];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(refreshTable:)
name:#"refreshTable"
object:nil];
}
- (void)refreshTable:(NSNotification *) notification
{
// Reload the recipes
[self loadObjects];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"refreshTable" object:nil];
}
#pragma mark - UISearchBarDelegate
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[searchResults removeAllObjects];
[self.searchedBar resignFirstResponder];
searchResults = [NSMutableArray arrayWithCapacity:10];
//#warning Put your ClassName here
PFQuery *query = [PFQuery queryWithClassName:#"Recipe"];
//#warning put key that you want to search here
[query whereKey:#"name" containsString:searchedBar.text];
NSArray *results = [query findObjects];
[searchResults addObjectsFromArray:results];
//#warning put your key here
[query orderByAscending:#"name"];
//[self queryForTable];
[self loadObjects];
}
#pragma mark - PFQueryTableViewController
- (void)objectsWillLoad {
[super objectsWillLoad];
// This method is called before a PFQuery is fired to get more objects
}
- (void) objectsDidLoad:(NSError *)error
{
[super objectsDidLoad:error];
NSLog(#"error: %#", [error localizedDescription]);
}
#pragma mark - Query
- (PFQuery *)queryForTable
{
PFQuery *query;
if (self.searchResults == 0) {
query = [PFQuery queryWithClassName:self.parseClassName];
} else {
query = [PFQuery queryWithClassName:self.parseClassName];
NSString *searchThis = [searchedBar.text lowercaseString];
//#warning key you wanted to search here
[query whereKeyExists:#"name"];
[query whereKey:#"name" containsString:searchThis];
}
[query orderByAscending:#"name"];
// If Pull To Refresh is enabled, query against the network by default.
if (self.pullToRefreshEnabled) {
query.cachePolicy = kPFCachePolicyNetworkOnly;
}
// If no objects are loaded in memory, we look to the cache first to fill the table
// and then subsequently do a query against the network.
if (self.objects.count == 0) {
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
}
return query;
}
/*
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection: (NSInteger)section
{
if (searchResults == nil) {
return 0;
} else if ([searchResults count] == 0) {
return 1;
} else {
return [self.objects count];
}
}
*/
// Override to customize the look of a cell representing an object. The default is to display
// a UITableViewCellStyleDefault style cell with the label being the first key in the object.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *simpleTableIdentifier = #"RecipeCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
// Configure the cell
PFFile *thumbnail = [object objectForKey:#"imageFile"];
PFImageView *thumbnailImageView = (PFImageView*)[cell viewWithTag:100];
thumbnailImageView.image = [UIImage imageNamed:#"recipeBoxImage2.jpg"];
thumbnailImageView.file = thumbnail;
[thumbnailImageView loadInBackground];
UILabel *nameLabel = (UILabel*) [cell viewWithTag:101];
nameLabel.text = [object objectForKey:#"name"];
UILabel *prepTimeLabel = (UILabel*) [cell viewWithTag:102];
prepTimeLabel.text = [object objectForKey:#"prepTime"];
static NSString *LoadMoreCellIdentifier = #"LoadMoreCell";
UITableViewCell *loadcell = [self.tableView dequeueReusableCellWithIdentifier:LoadMoreCellIdentifier];
if (!cell) {
loadcell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:LoadMoreCellIdentifier];
}
return cell;
}
- (void)configureSearchResult:(SearchedResultCell *)cell atIndexPath: (NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *simpleTableIdentifier = #"RecipeCell";
SearchedResultCell *searchcell = [self.tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (searchcell == nil) {
searchcell = [[SearchedResultCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
// Configure the cell
PFFile *thumbnail = [object objectForKey:#"imageFile"];
PFImageView *thumbnailImageView = (PFImageView*)[cell viewWithTag:100];
thumbnailImageView.image = [UIImage imageNamed:#"recipeBoxImage2.jpg"];
thumbnailImageView.file = thumbnail;
[thumbnailImageView loadInBackground];
UILabel *nameLabel = (UILabel*) [cell viewWithTag:101];
nameLabel.text = [object objectForKey:#"name"];
UILabel *prepTimeLabel = (UILabel*) [cell viewWithTag:102];
prepTimeLabel.text = [object objectForKey:#"prepTime"];
}
// Set CellForRowAtIndexPath
- (UITableViewCell *)searchtableView:(UITableView *)searchtableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *CellIdentifier = #"SearchResultCell";
//Custom Cell
SearchedResultCell *cell = [searchtableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[SearchedResultCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if ([searchResults count] == 0) {
//cell.mainTitle.text = #"Nothing Found";
return [self.tableView dequeueReusableCellWithIdentifier:NothingFoundCellIdentifier];
} else {
//#warning put your ClassName here
PFObject *object = [PFObject objectWithClassName:#"Recipe"];
object = [searchResults objectAtIndex:indexPath.row];
[self configureSearchResult:cell atIndexPath:indexPath object:object];
//[self configureSearchResult:cell atIndexPath:indexPath object:object];
return cell;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForNextPageAtIndexPath:(NSIndexPath *)indexPath {
static NSString *LoadMoreCellIdentifier = #"LoadMoreCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:LoadMoreCellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:LoadMoreCellIdentifier];
}
return cell;
}
//// Set TableView Height for Load Next Page
//- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath: (NSIndexPath *)indexPath {
// if([self.objects count] == indexPath.row) {
// // Load More Cell Height
// return 60.0;
// } else {
// return 80.0;
// }
//}
#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[searchedBar resignFirstResponder];
if ([self.objects count] == indexPath.row) {
[self loadNextPage];
} else {
PFObject *photo = [self.objects objectAtIndex:indexPath.row];
NSLog(#"%#", photo);
// Do something you want after selected the cell
}
}
#pragma mark - UIScrollViewDelegate
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
[self.searchedBar resignFirstResponder];
}
//- (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
//{
// // Remove the row from data model
// PFObject *object = [self.objects objectAtIndex:indexPath.row];
// [object deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
// [self refreshTable:nil];
// }];
//}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
RecipeDetailViewController *destViewController = segue.destinationViewController;
PFObject *object = [self.objects objectAtIndex:indexPath.row];
Recipe *recipe = [[Recipe alloc] init];
recipe.name = [object objectForKey:#"name"];
recipe.imageFile = [object objectForKey:#"imageFile"];
recipe.prepTime = [object objectForKey:#"prepTime"];
recipe.ingredients = [object objectForKey:#"ingredients"];
recipe.instructions = [object objectForKey:#"instructions"];
recipe.servings = [object objectForKey:#"servings"];
recipe.hotelSite = [object objectForKey:#"hotelSite"];
recipe.recipeType = [object objectForKey:#"recipeType"];
destViewController.recipe = recipe;
}
}
#end
found this - hope it helps others - credit to Bizzi-Body
https://github.com/Bizzi-Body/ParseTutorial-Part-2
//
// GourmetChefViewController.m
//
// Created by RedMac on 3/19/15.
//
#import "RecipeBookViewController.h"
#interface RecipeBookViewController ()
{
NSMutableArray *totalStrings;
NSMutableArray *filteredStrings;
BOOL isFiltered;
}
#end
#implementation RecipeBookViewController
#pragma mark -
#pragma mark UIViewController
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
self.mySearchBar.delegate =self;
self.myTableView.delegate = self;
self.myTableView.dataSource=self;
[self retrieveFromParse];
}
- (void) retrieveFromParse {
PFQuery *retrieveRecipes = [PFQuery queryWithClassName:#"Recipe"];
[retrieveRecipes whereKeyExists:#"name"];
[retrieveRecipes findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
NSLog(#"%#", objects);
totalStrings = [[NSMutableArray alloc] initWithArray:objects];
}
[self.myTableView reloadData];
}];
}
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *) searchText{
if (searchText.length ==0){
isFiltered =NO;}
else{
isFiltered =YES;
filteredStrings=[[NSMutableArray alloc]init];
for(PFObject *element in totalStrings) {
NSString * str = [element objectForKey:#"name"];
NSLog(#"%#", NSStringFromClass([element class])); // you thought that totalStrings
// contained NSString objects,
// but it contains PFObjects.
NSRange stringRange =[str rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (stringRange.location !=NSNotFound) {
// you need to add the PFObject back to make your cellForRowAtIndexPath: method
// work.
[filteredStrings addObject:element]; // used to be :str
}
}
}
[self.myTableView reloadData];
}
//table view datasource and delegate method.....
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section
{
if (isFiltered){
return [filteredStrings count];
}return [totalStrings count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"RecipeCell";
UITableViewCell *cell= [tableView dequeueReusableCellWithIdentifier: CellIdentifier];
if (!cell){
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if(!isFiltered){
PFObject *tempObject =[totalStrings objectAtIndex: indexPath.row];
cell.textLabel.text = [tempObject objectForKey:#"name"];
}
else
{
PFObject *tempObject2 =[filteredStrings objectAtIndex: indexPath.row];
cell.textLabel.text =[tempObject2 objectForKey:#"name"];
}
return cell;
}
- (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.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
I'm using parse.com. I'm trying to display comments but in order to get the comments I have to get the PFObject from my DetailViewController but it doesn't return the PFObject to CommentsViewController
EDIT
here is all the code. I'm new to objective c so I'm probably doing something stupid
CommentsView Controller
#import "CommentsViewController.h"
#import "DetailViewController.h"
#import "CommentsCell.h"
#interface CommentsViewController (){
NSArray *commentsArray;
id commentInstance;
}
#end
#implementation CommentsViewController
- (id)init {
if (self = [super init]) {
[self performSelector:#selector(commentsQuery)];
}
return self;
}
- (void)commentsQuery {
commentInstance = [[DetailViewController alloc] init];
PFObject *tempObj = [commentInstance placeObject];
PFQuery *query1 = [PFQuery queryWithClassName:#"activity"];
[query1 whereKey:#"type" equalTo:#"comment"];
[query1 whereKey:#"place" equalTo:[NSString stringWithFormat:#"%#", [tempObj objectId]]];
NSLog(#"%#", tempObj);
[query1 orderByDescending:#"createdAt"];
[query1 findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error){
commentsArray = [[NSArray alloc]initWithArray:objects];
NSLog(#"%lu", (unsigned long)[commentsArray count]);
}
}];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
static NSString *CellIdentifier = #"Cell";
CommentsCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell == nil) {
cell = [[CommentsCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
PFObject *placeObj = [commentInstance placeObject];
cell.username.text = #"test";
return cell;
}
#end
DetailsViewCOntroller
#import "DetailViewController.h"
#import "CommentsViewController.h"
#interface DetailViewController (){
CommentsViewController *test;
}
#end
#implementation DetailViewController
#synthesize place;
#synthesize userPhoto, message, username, checkCount, photo, scroller, commentsTableView;
- (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.
test = [[CommentsViewController alloc] init];
self.commentsTableView.delegate = test;
self.commentsTableView.dataSource = test;
//Adjust the message label box height
CGSize textSize = [[place objectForKey:#"message"] sizeWithFont:[UIFont systemFontOfSize:12] constrainedToSize:CGSizeMake(201, CGFLOAT_MAX) lineBreakMode: NSLineBreakByWordWrapping];
userPhoto.file = [place objectForKey:#"thumbnail"];
[userPhoto loadInBackground];
username.text = [place objectForKey:#"username"];
message.text = [place objectForKey:#"message"];
checkCount.text = [NSString stringWithFormat:#"%#", [place objectForKey:#"checkMarkCount"]];
[message sizeToFit];
if ([place objectForKey:#"photo"] != Nil){
photo.file = [place objectForKey:#"photo"];
[photo loadInBackground];
//[photo sizeToFit];
photo.frame = CGRectMake(6, textSize.height + 50, photo.frame.size.width, photo.frame.size.height);
float sizeOfContent = 0;
UIView *lLast = [scroller.subviews lastObject];
NSInteger wd = lLast.frame.origin.y;
NSInteger ht = lLast.frame.size.height;
NSLog(#"%#", lLast);
sizeOfContent = wd+ht;
scroller.contentSize = CGSizeMake(scroller.frame.size.width, sizeOfContent+100);
}
else{
float sizeOfContent = 0;
UIView *lLast = [scroller.subviews lastObject];
NSInteger wd = lLast.frame.origin.y;
NSInteger ht = lLast.frame.size.height;
NSLog(#"%#", lLast);
sizeOfContent = wd+ht;
scroller.contentSize = CGSizeMake(scroller.frame.size.width, sizeOfContent+100);
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)checkMarkButton:(UIButton *)sender {
}
- (PFObject *)placeObject{
return place;
}
#end
I do not see where you allocate place object. You call init and then try retrieving place. It should return nil. Here is your code:
commentInstance = [[DetailViewController alloc] init];
PFObject *tempObj = [commentInstance placeObject];
commentInstance is a new object. There is no init function defined in DetailViewController, hence commentInstance.place is nil and that is returned by placeObject method.
You define place as a property
#property ... place
That gives you a member variable _pace and two member functions, place() and setPlace(place). The object itself is not allocated for you.
Allocate place object in your init function, get rid of placeObject(), replace it with object.place call.
I got rid of all that and in my DetailViewController I added [test placeSet:place] in my viewDidLoad method. Then in CommentsViewController I did...
- (void)placeSet:(PFObject *)object{
place = object;
NSLog(#"place = %#", place);
}
I'm using SudzC for an iPhone app. I'm succesfully calling my ASP.Net webservice and pulling the needed data into an NSMutable array called tableData. I have a tableView that should display the contents of tableData; however this is not working. I've looked for hours at this problem. I'm very new to the Objective C world so I'm thinking it's a small oversight on my part. I've linked my TableView to the ViewController (delegate/datasource) as well.
Here's is the code I have:
#import "ViewController.h"
#import "DocumentServiceJSONService.h"
#interface ViewController ()
#end
#implementation ViewController
NSMutableArray *tableData;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
-(void)viewWillAppear:(BOOL) animated {
tableData = [[NSMutableArray alloc] init];
DocumentServiceJSONService* service = [[DocumentServiceJSONService alloc] init];
[service GetAllEMSDocumentsXMLAsString: self action:#selector(handleGetAllEMSDocuments:)];
[super viewWillAppear:animated];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) handleGetAllEMSDocuments:(id) result {
if ([result isKindOfClass:[NSError class]]) {
//if an error has occurred, handle it
return;
}
if([result isKindOfClass: [SoapFault class]]) {
return;
}
NSString* xmlString = result;
CXMLDocument *xmlDoc = [[CXMLDocument alloc] initWithXMLString:xmlString options:0 error:nil];
NSArray *nodes = NULL;
nodes = [xmlDoc nodesForXPath:#"//EMSDocuments" error:nil];
for (CXMLElement *node in nodes) {
NSMutableDictionary *item = [[NSMutableDictionary alloc] init];
int counter;
for (counter = 0; counter < [node childCount]; counter++) {
[item setObject:[[node childAtIndex:counter] stringValue] forKey:[[node childAtIndex:counter] name]];
}
//[item setObject:[[node attributeForName:#"DisplayName"] stringValue] forKey:#"DisplayName"];
NSString *displayName = [item objectForKey:#"DisplayName"];
[tableData addObject:displayName];
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [tableData count];
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [tableData objectAtIndex:indexPath.row];
return cell;
}
#end
Any advice is appreciated.
Make sure you have in your .h the delegate and datasource correctly set:
#interface YourViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>
And if you are using XIBs for the user interface, that the tableview is connected to the File's Owner as datasource and delegate.
--
EDIT:
Creating a Outlet for you tableview:
I have this program with a tableView as my first view. I have also implemented (or at least tried to) a search bar on top of the view. Have used several hours to search for a solution, but without positive results.
#import "FirstViewController.h"
#import "NSDictionary-MutableDeepCopy.h"
#implementation FirstViewController
#synthesize listData, table, search, allNames, names, keys;
#pragma mark -
#pragma mark Custom Methods
- (void)resetSearch {
NSMutableDictionary *allNamesCopy = [self.allNames mutableDeepCopy];
self.names = allNamesCopy;
[allNamesCopy release];
NSMutableArray *keyArray = [[NSMutableArray alloc] init];
[keyArray addObjectsFromArray:[[self.allNames allKeys]
sortedArrayUsingSelector:#selector(compare:)]];
self.keys = keyArray;
[keyArray release];
}
-(void)handleSearchForTerm:(NSString *)searchTerm {
NSMutableArray *sectionsToRemove = [[NSMutableArray alloc] init];
[self resetSearch];
for (NSString *key in self.keys) {
NSMutableArray *array = [names valueForKey:key];
NSMutableArray *toRemove = [[NSMutableArray alloc] init];
for (NSString *name in listData) {
if ([name rangeOfString:searchTerm
options:NSCaseInsensitiveSearch].location == NSNotFound)
[toRemove addObject:name];
}
if ([array count] == [toRemove count])
[sectionsToRemove addObject:key];
[array removeObjectsInArray:toRemove];
[toRemove release];
}
[self.keys removeObjectsInArray:sectionsToRemove];
[sectionsToRemove release];
[table reloadData];
}
- (void)viewDidLoad {
NSString *path = [[NSBundle mainBundle] pathForResource:#"sortednames" ofType:#"plist"];
NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path];
self.names = dict;
self.allNames = dict;
[dict release];
[self resetSearch];
[table reloadData];
[table setContentOffset:CGPointMake(0.0, 44.0)animated:NO];
self.parentViewController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"background.png"]];
NSArray *array = [[NSArray alloc] initWithObjects:
// A larger amount of objects here.
self.listData = array;
[array release];
[super viewDidLoad];
}
/*
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
// Custom initialization
}
return self;
}
*/
/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
}
*/
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (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.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.listData = nil;
self.table = nil;
self.search = nil;
self.allNames = nil;
self.names = nil;
self.keys = nil;
}
- (void)dealloc {
[listData release];
[search release];
[table release];
[allNames release];
[keys release];
[names release];
[super dealloc];
}
#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return ([keys count] > 0) ? [keys count] : 1;
}
- (NSInteger)tableView:(UITableView *)aTableView
numberOfRowsInSection: (NSInteger)section {
return [self.listData count];
if ([keys count] == 0)
return 0;
NSString *key = [keys objectAtIndex:section];
NSArray *nameSection = [names objectForKey:key];
return [nameSection count];
}
- (UITableViewCell *) extracted_method: (UITableViewCell *) cell {
return cell;
}
- (UITableViewCell *)tableView:(UITableView *)aTableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSUInteger section = [indexPath section];
NSUInteger row = [indexPath row];
NSString *key = [keys objectAtIndex:section];
NSArray *nameSection = [names objectForKey:key];
static NSString *sectionsTableIdentifier = #"sectionsTableIdentifier";
UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:
sectionsTableIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier: sectionsTableIdentifier] autorelease];
}
cell.backgroundColor = [UIColor clearColor];
cell.textColor = [UIColor whiteColor];
cell.detailTextLabel.textColor = [UIColor whiteColor];
cell.text = [nameSection objectAtIndex:row];
[self extracted_method: cell].text = [listData objectAtIndex:row];
return cell;
}
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section {
if ([keys count] == 0)
return nil;
NSString *key = [keys objectAtIndex:section];
return key;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return keys;
}
#pragma mark -
#pragma mark Table View Delegate Methods
- (NSIndexPath *)tableView:(UITableView *)tableView
willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[search resignFirstResponder];
return indexPath;
}
#pragma mark -
#pragma mark Search Bar Delegate Methods
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
NSString *searchTerm = [searchBar text];
[self handleSearchForTerm:searchTerm];
}
- (void)searchBar:(UISearchBar *)searchBar
textDidChange:(NSString *)searchTerm {
if ([searchTerm length] == 0) {
[self resetSearch];
[table reloadData];
return;
}
[self handleSearchForTerm:searchTerm];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
search.text = #"";
[self resetSearch];
[table reloadData];
[searchBar resignFirstResponder];
}
#end
Ok guys. My problem is that this doesnt get the search function to work. In addition I receive siginal SIGABRT at this line:
NSString *key = [keys objectAtIndex:section];
So I need help with two things:
1: I need to get that SIGABRT away.
Error log message: * Terminating app due to uncaught exception
'NSRangeException', reason: '* -[NSMutableArray objectAtIndex:]:
index 0 beyond bounds for empty array'
That is I don't store any data in keys. how would I do that? and what would I store?
2: Want the search function to search in my listData array!
Thanks in advance - hope u can help!
You have not finished your sectionIndexTitlesForTableView: method. Right now it is:
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return keys;
There is no closing }, so the compiler thinks everything after that is still part of that method. When you try to define the next method, use use - (NSIndexPath *) to indicate that it is an instance method which returns NSIndexPath*, but the compiler thinks you are trying to subtract something.
The solution is simple: Add the } to the end of sectionIndexTitlesForTableView:.
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return keys;
}