I am trying to customize a class using Parse called PFQueryTableViewController. It doesn't seem to want to customize my cells, though:
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithClassName:#"UserPhoto"];
self = [super initWithCoder:aDecoder];
if (self) {
// Custom the table
// The className to query on
self.parseClassName = #"UserPhoto";
// The key of the PFObject to display in the label of the default cell style
self.textKey = #"title";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = YES;
// The number of objects to show per page
self.objectsPerPage = 25;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self.tableView registerNib:[UINib nibWithNibName:#"FeedCustomCell" bundle:[NSBundle mainBundle]] forCellReuseIdentifier:#"FeedCustom"];
}
#pragma mark - Parse
- (void)objectsDidLoad:(NSError *)error {
[super objectsDidLoad:error];
// This method is called every time objects are loaded from Parse via the PFQuery
}
- (void)objectsWillLoad {
[super objectsWillLoad];
// This method is called before a PFQuery is fired to get more objects
NSLog(#"Done");
}
// Override to customize what kind of query to perform on the class. The default is to query for
// all objects ordered by createdAt descending.
- (PFQuery *)queryForTable {
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
// 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;
}
[query orderByDescending:#"createdAt"];
NSLog(#"%#", query);
return query;
}
// 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 {
FeedCustomCell *cell = (FeedCustomCell * )[self.tableView dequeueReusableCellWithIdentifier:#"FeedCustom" forIndexPath:indexPath];
// Configure the cell
cell.caption.text = [object objectForKey:#"title"];
cell.accessoryType =UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
Any ideas? FeedCustomCell is simply a subclass for UITableViewCell that uses IB to add a label. TableView for my subclass of PFQueryTableViewController is also being created via IB.
You should do your customization in "viewDidLoad" instead of the init method, where the xib hasn't been loaded yet.
You are doing it wrong. You need to load cell from bundle using
[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
either in your cellForRowAtIndexPath or in your init and awake from nib method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
FeedCustomCell *cell = (FeedCustomCell*)[tableView dequeueReusableCellWithIdentifier:#"BDCustomCell"];
if (cell == nil) {
// Load the top-level objects from the custom cell XIB.
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"FeedCustomCellXib" owner:self options:nil];
// Grab a pointer to the first object (presumably the custom cell, as that's all the XIB should contain).
cell = [topLevelObjects objectAtIndex:0];
}
return cell;
}
Related
I'm looking for a way to transport data entered into the database from a view to another. I have a table view controller with university exams inserted every examination must show your card, calling its data from the data browser to Parse the current user through the
- (void) prepareForSegue: (uistoryboardSegue)
Then I try to explain as best as possible ...
I downloaded from the project parse.com PFQueryTableViewController.
I entered all the data perfectly recall the Databrowser ...
My cells are thus created:
#import "TableViewParse.h"
#import "CustomNav.h"
#import "ListaInAttesa.h"
#implementation TableViewParse
#synthesize TableViewInAttesa;
- (id)initWithCoder:(NSCoder *)aCoder {
self = [super initWithCoder:aCoder];
// Custom the table
// The className to query on
self.parseClassName = #"miaclasse";
// The key of the PFObject to display in the label of the default cell style
self.textKey = #"titolomio";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = YES;
// The number of objects to show per page
self.objectsPerPage = 5;
[CustomNav NavBar];
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (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.
}
#pragma mark - Parse
- (void)objectsDidLoad:(NSError *)error {
[super objectsDidLoad:error];
// This method is called every time objects are loaded from Parse via the PFQuery
}
- (void)objectsWillLoad {
[super objectsWillLoad];
// This method is called before a PFQuery is fired to get more objects
}
// Override to customize what kind of query to perform on the class. The default is to query for
// all objects ordered by createdAt descending.
- (PFQuery *)queryForTable {
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
[query whereKey: #"user" equalTo: [PFUser currentUser]];
// 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;
}
[query orderByAscending:#"createdAt"];
return query;
}
// 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 *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// Configure the cell
cell.textLabel.text = [object objectForKey:#"titolomio"];
cell.detailTextLabel.text = [NSString stringWithFormat:#"Questo esame รจ previsto per il : %#", [object objectForKey:#"datamia"]];
return cell;
}
/*
// Override if you need to change the ordering of objects in the table.
- (PFObject *)objectAtIndex:(NSIndexPath *)indexPath {
return [objects objectAtIndex:indexPath.row];
}
*/
// Override to customize the look of the cell that allows the user to load the next page of objects.
// The default implementation is a UITableViewCellStyleDefault cell with simple labels.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForNextPageAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"NextPage";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.text = #"Visualizza ancora ....";
return cell;
}
#pragma mark - Table view data source
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
PFObject *object = [self.objects objectAtIndex:indexPath.row];
[object deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
[self loadObjects];
}];
}
}
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"Esamiinattesa"])
{
// NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
// ListaInAttesa *destViewController = segue.destinationViewController;
// destViewController.title = [self.postController objectInListAtIndex:indexPath.row];
}
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[super tableView:tableView didSelectRowAtIndexPath:indexPath];
// [self performSegueWithIdentifier:#"Esamiinattesa" sender:indexPath];
}
#end
Now I need that when the user clicks on a current exam placed in the cell Tableview is sent to a specific viewcontroller where inside are called the results of the examination the time the user selected current ...
I know that it is "prepareForSegue" but I can not figure out where I'm wrong, maybe I'm wrong just the procedure to obtain the required result.
P.S.I realized just now that I connected with the user's findanzato because I changed my pc and I kept doing the same id logout ... Sorry ... We are working on this project in two App
I subclassed the UITableViewCell in order to customize it, but I think I'm missing something because: 1) It's not working and 2) There are a couple of things I'm confused on. Along with customizing the look of the .xib file, I also changed the backgroundView, and that part is working fine. The part that I least understand/am most confused about is the init method, so I posted that here. If it turns out that is correct, please tell me so I can post more code that may be the cause.
This is the init method, which I customized. I'm sort of confused around the "style" idea and I think I'm just returning a normal UITableViewCell with a different backgroundView. I mean, there's nothing in there that refers to the .xib or does anything but change the .backgroundView from the self:
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier wait: (float) wait fadeOut: (float) fadeOut fadeIn: (float) fadeIn playFor: (float) playFor
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
CueLoadingView* lview = [[CueLoadingView alloc] initWithFrame:CGRectMake(0, 0, 320, 53)];
self.backgroundView = lview;
[self setWait:wait]; // in turn edits the lview through the backgrounView pointer
[self setFadeOut:fadeOut];
[self setFadeIn:fadeIn];
[self setPlayFor:playFor];
}
return self;
}
Other than the .xib and several setters and getters, this is the only real part of my code, that relates to retrieving a cell.
Additional Information:
1) This is my .xib, which is linked to the class.
2) This is the code that calls/creates the UITableView (the delegate/view controller):
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"CueTableCell";
CueTableCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[CueTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier wait:5.0 fadeOut:1.0 fadeIn:1.0 playFor:10.0];
[cell updateBarAt:15];
}
return cell;
}
The easiest way (available since iOS 5.0) to create a custom table view cell in a nib file is to use registerNib:forCellReuseIdentifier: in the table view controller. The big advantage is that dequeueReusableCellWithIdentifier: then automatically instantiates a cell from the nib file if necessary. You don't need the if (cell == nil) ... part anymore.
In viewDidLoad of the table view controller you add
[self.tableView registerNib:[UINib nibWithNibName:#"CueTableCell" bundle:nil] forCellReuseIdentifier:#"CueTableCell"];
and in cellForRowAtIndexPath you just do
CueTableCell *cell = [tableView dequeueReusableCellWithIdentifier:#"CueTableCell"];
// setup cell
return cell;
Cells loaded from a nib file are instantiated using initWithCoder, you can override that in your subclass if necessary. For modifications to the UI elements, you should override awakeFromNib (don't forget to call "super").
You have to load the cell from the .xib instead:
if ( cell == nil ) {
cell = [[NSBundle mainBundle] loadNibNamed:#"CellXIBName" owner:nil options:nil][0];
}
// set the cell's properties
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"CueTableCell";
CueTableCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
NSArray *array = [[NSBundle mainBundle] loadNibNamed:#"CueTableCell XibName" owner:self options:nil];
// Grab a pointer to the first object (presumably the custom cell, as that's all the XIB should contain).
cell = [array objectAtIndex:0];
}
return cell;
}
I m using tableview to populate an array from json file...In my view Controller i have tableview.when i run the project my table view codings are not executing.i dont know y?anyone help me pls.This is my viewcontroller file
#import "JSONparserViewController.h"
#implementation JSONparserViewController
#synthesize arraydata;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSLog(#"No Of Elements in Array Data: %d",[arraydata count]);
return [arraydata count];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 80;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// Configure the cell...
NSLog(#"%#",arraydata);
NSDictionary *aTweet = [arraydata objectAtIndex:[indexPath row]];
cell.textLabel.text = [aTweet objectForKey:#"name"];
// NSDictionary *newArray=[aTweet objectForKey:#"properties"];
//
// NSDictionary *newArray1=[newArray objectForKey:#"propertyMeta"];
// cell.detailTextLabel.text = [newArray1 objectForKey:#"name"];
// cell.detailTextLabel.text = [newArray objectForKey:#"value"];
cell.textLabel.adjustsFontSizeToFitWidth = YES;
cell.textLabel.font = [UIFont systemFontOfSize:12];
cell.textLabel.minimumFontSize = 10;
cell.textLabel.numberOfLines = 4;
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
//cell.detailTextLabel.text = [newArray1 objectForKey:#"type"];
// NSURL *url = [NSURL URLWithString:[aTweet objectForKey:#"profile_image_url"]];
// NSData *data = [NSData dataWithContentsOfURL:url];
// cell.imageView.image = [UIImage imageWithData:data];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
NSLog(#"HIIIIIIIIII");
return cell;
}
Your Problem is you dont have any data in the arraydata object. Its count is zero. So Although you have set all delegate & datasource, Your table delegate methods will not called, because when it calls noofrowinSection, it returns zero.
Please verify that you have data in your arrayObject.
have you initialized your arraydata object...? and also it looks to me that you haven't set the delegate and datasource for your tableview becoz of which your nslog delegate methods are not being called.
Do this to set the delegate and datasource of tableView in your header file.
#interface JSONparserViewController: UIViewController<UITableViewDelegate,UITableViewDataSource>
{
}
Also check that your arraydata array is given memory or not.If not give it the memory first
you have nit allocate your array. firstly you have to allocate your Array wherever you assign your array value . NSLog your array in view will appear if printed then it must be executed
Please verify you have data in your array. And once after parsing is done, then reload the table in connectiondidfinishloading method. Table will be automatically reload.
I have a custom cell in a table View, see below.
I have two textFields txt1 and txt2 in my custom cell, as seen below
How can i access the values i enter in each of the text fields so that i can add the values in to seperate Arrays...
the "Addset" button will increment the no of sections of the grouped table View there by incrementing the one more set.
my table view code is as follows.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID= #"catogoryCell";
CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:cellID];
if(cell==nil)
{
NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:nil options:nil];
for(id currentObject in nibObjects)
{
if([currentObject isKindOfClass: [CustomCell class]])
{
cell = (CustomCell *)currentObject;
}
}
}
//cell.txt1.text = #"0";
return cell;
}
Thanks all..
Cells are reusable, so they need a more persistent way to keep their info.
Method 1:
You could hold some UITextField objects into an array in case you don't want to reuse the textfields as well, and at cellForRowAtIndexPath you'd only need to set the textfields to their cells such as:
cell.txt1 = [textFieldsArray objectAtindex:indexPath.section*2];
cell.txt2 = [textFieldsArray objectAtindex:indexPath.section*2+1]; //txt1 and txt2 properties should have assign
Method 2:
If you want to reuse the textfields as well I suggest using an array with mutable dictionaries, each dictionary holding the 'settings' for a cell. The textfields will be fully managed by the custom cell (e.g: at the UIControlEventValueChanged event update #"txt1" or #"txt2" values from the dictionary attached to the cell).
///somewhere in the initialization (in the class holding the tableview)
contentArray = [[NSMutableArray alloc] init];
///when adding a new cell (e.g: inside the 'Add set' action)
[contentArray addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:#"", #"txt1", #"", #"txt2", nil]];
//add a new cell to the table (the same way you do now when tapping 'Add set')
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
...
[cell attachDictionary:[contentArray objectAtIndex:indexPath.section]];
return cell;
}
///anywhere where you'd like to access the values inserted inside a cell
NSMutableDictionary *cell3Content = [contentArray objectAtIndex:3];
NSString *text1 = [cell3Content valueForKey:#"txt1"];
NSString *text2 = [cell3Content valueForKey:#"txt2"];
///CustomCell.m
-(id)initWithCoder:(NSCoder *)decoder{
self = [super initWithCoder:decoder];
if(!self) return nil;
[txt1 addTarget:self action:#selector(txt1Changed:) forControlEvents:UIControlEventValueChanged];
[txt2 addTarget:self action:#selector(txt2Changed:) forControlEvents:UIControlEventValueChanged];
return self;
}
-(void)attachDictionary:(NSMutableDictionary *)dic{
contentDictionary = dic;
txt1.text = [contentDictionary valueForKey:#"txt1"];
txt2.text = [contentDictionary valueForKey:#"txt2"];
}
-(void)txt1Changed:(UITextField *)sender{
[contentDictionary setValue:txt1.text forKey:#"txt1"];
}
When you make the IBOutlet connections in your UITableViewCell subclass, connect them to properties in the File Owner (the viewController), instead of the view itself. That way you'll be able to access them from your viewController (the UItableViewDataSource)
I am creating an app in which i want to display a text box and when i enter an word in it ,then it will display the contents from the dictionary which are matching to that word.Now i want to display the list which will generate from my dictionary according to the word entered in text box ,in a table view and that table view should be on the same view controller where i am having the text box.Is it possible to do so. I mean is it possible to create a table view with scrolling option so that user can scroll through the list and then select the word which he wants.
Yes it is possible. Take IBOutlet for UITableView and wire it up. Define its datasource and delegate to your controller. Implement UITableViewDelegate to your controller and override all the methods like cellForRowAtIndex and others.
//FilterDataViewController.h
#import <UIKit/UIKit.h>
#interface FilterDataViewController : UIViewController <UITableViewDelegate>
{
IBOutlet UITableView *tblView;
IBOutlet UITextField *txtFld;
NSMutableArray *arrSrch;
NSMutableArray *srchedData;
}
-(IBAction)srchBtnTapped:(id)sender;
#end
//FilterDataViewController.m
#import "FilterDataViewController.h"
#implementation FilterDataViewController
-(IBAction)srchBtnTapped:(id)sender
{
if(![txtFld.text isEqualToString:#""])
{
[srchedData removeAllObjects];
for (NSString *allStrings in arrSrch)
{
NSComparisonResult result = [allStrings compare:txtFld.text options:(NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [txtFld.text length])];
if (result == NSOrderedSame)
{
[srchedData addObject:allStrings];
}
}
[tblView reloadData];
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
arrSrch = [[NSMutableArray alloc] initWithObjects:#"One",#"One Two",#"Two",#"Three",#"Four",#"One Five",#"Six",nil];
srchedData = [[NSMutableArray alloc] init];
}
#pragma mark -
#pragma mark Table view data source
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [srchedData count];
}
// Customize the appearance of table view cells.
- (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] autorelease];
}
cell.textLabel.text = [srchedData objectAtIndex:indexPath.row];
// Configure the cell.
return cell;
}
#end
This is surely possible. Create a View based Application and put both of your table view and Text Field in the same view and you can do what ever you are planning to do.