I am writing an app that is transferring data from one class to another. For some reason the text is not being displayed on the other view when it is supposed to.
My code:
.h Master class:
#import <UIKit/UIKit.h>
#class SSWSettings;
#interface SSWSelectProgram : UITableViewController
#property (strong, nonatomic) SSWSettings *detailViewController;
#property (weak, nonatomic) IBOutlet UILabel *p1;
#end
.m master class:
#import "SSWSelectProgram.h"
#import "SSWSettings.h"
#interface SSWSelectProgram ()
#end
#implementation SSWSelectProgram
#synthesize p1;
- (void)viewDidLoad
{
[super viewDidLoad];
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cellChosen = [self.tableView cellForRowAtIndexPath:indexPath];
if (cellChosen == static1) {
self.detailViewController.detailItem = p1.text;
[self dismissViewControllerAnimated:YES completion:NULL];
}
.h detail class
#import <UIKit/UIKit.h>
#interface SSWSettings : UITableViewController <UITableViewDelegate, UITableViewDataSource>
#property (strong, nonatomic) id detailItem;
#property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
#end
.m detail class
#import "SSWSettings.h"
#import "SSWSelectProgram.h"
#interface SSWSettings ()
-(void)configureView;
#end
#implementation SSWSettings
#synthesize detailDescriptionLabel;
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
- (void)viewDidAppear:(BOOL)animated
{
[self configureView];
}
Your object "detailItem" is of type id.
Thus, it does not inherit from NSObject and the
[self.detailItem description];
call Will not return anything.
Try
self.detailDescriptionLabel.text = (NSString*) self.detailItem;
A better solution, of course, is to not use the type 'id' and use NSString
Related
I have Two classes in have declared string in one variable and trying access from another class. have initiated getter setter in between them still getting null value when I try to print from subclass.
CustomerCarSelection.h
#import <UIKit/UIKit.h>
#interface CustomerCarSelection : UITableViewController <UITableViewDataSource, UITableViewDataSource>
#property (strong, nonatomic) IBOutlet UITableView *carListTableView;
- (IBAction)next:(id)sender;
#property NSString *carSelectedForService;
#end
customerCarSelection.m
#import "CustomerCarSelection.h"
#import <Parse/Parse.h>
#import "carSelectCellTableViewCell.h"
#import "ServiceResultView.h"
#interface CustomerCarSelection ()
#end
#implementation CustomerCarSelection
#synthesize carListTableView;
#synthesize carSelectedForService;
- (void)viewDidLoad {
[super viewDidLoad];
ServiceResultView *service = [[ServiceResultView alloc]init];
service.pointer = self;
}
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"cell tabbed");
PFObject *temp = [cellDetails objectAtIndex:indexPath.row];
carSelectedForService = temp.objectId;
NSLog(#"%#", carSelectedForService);
}
serviceResultView.h
#import <UIKit/UIKit.h>
#import "CustomerCarSelection.h"
#interface ServiceResultView : UIViewController
{
CustomerCarSelection *pointer;
}
#property (nonatomic, retain) CustomerCarSelection *pointer;
- (IBAction)confirm:(id)sender;
#end
serviceResultView.m
#import "ServiceResultView.h"
#import "CustomerCarSelection.h"
#interface ServiceResultView ()
#end
#implementation ServiceResultView
#synthesize pointer;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSString *carResult = pointer.carSelectedForService;
NSLog(#"%#", carResult);
}
Where am I making mistake. When the cell tabbed it will assign object id to the String i trying access that object from another class
CustomerCarSelection.h
#import <UIKit/UIKit.h>
#interface CustomerCarSelection : UITableViewController <UITableViewDataSource, UITableViewDataSource>
#property (strong, nonatomic) IBOutlet UITableView *carListTableView;
- (IBAction)next:(id)sender;
#end
customerCarSelection.m
#import "CustomerCarSelection.h"
#import <Parse/Parse.h>
#import "carSelectCellTableViewCell.h"
#import "ServiceResultView.h"
#interface CustomerCarSelection ()
#end
#implementation CustomerCarSelection
#synthesize carListTableView;
#synthesize carSelectedForService;
- (void)viewDidLoad {
[super viewDidLoad];
}
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"cell tabbed");
PFObject *temp = [cellDetails objectAtIndex:indexPath.row];
serviceResultView *obj = [serviceResultView alloc] init];
obj.carSelectedForService = temp.objectId;
NSLog(#"%#", obj.carSelectedForService);
}
serviceResultView.h
#import <UIKit/UIKit.h>
#import "CustomerCarSelection.h"
#interface ServiceResultView : UIViewController
#property NSString *carSelectedForService;
- (IBAction)confirm:(id)sender;
#end
serviceResultView.m
#import "ServiceResultView.h"
#import "CustomerCarSelection.h"
#interface ServiceResultView ()
#end
#implementation ServiceResultView
#synthesize pointer;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSLog(#"%#", self.carSelectedForService);
}
I have face problem in that code when i have run that code then no data show in tableview on it's table cell. there is no error in console but data not show. please Guide me what's the mistake i have do that code.
InvoiceCell.h
#import <UIKit/UIKit.h>
#interface InvoiceCell : UITableViewCell
#property (strong, nonatomic) IBOutlet UIImageView *ItemImage;
#property (strong, nonatomic) IBOutlet UILabel *ItemName;
#property (strong, nonatomic) IBOutlet UILabel *ItemType;
#property (strong, nonatomic) IBOutlet UILabel *date;
#property (strong, nonatomic) IBOutlet UILabel *Amount;
#property (strong, nonatomic) IBOutlet UILabel *status;
#end
InvoiceCell.m
#import "InvoiceCell.h"
#implementation InvoiceCell
#synthesize ItemImage,ItemName,ItemType,Amount,status;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
#end
InvoiceViewController.h
#import <UIKit/UIKit.h>
#interface InvoiceViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>
#property (nonatomic,strong) NSArray *DataImages;
#property (nonatomic, strong) NSArray *DataName;
#property (nonatomic, strong) NSArray *Datatype;
#property (nonatomic, strong) NSArray *DataAmount;
#property (nonatomic, strong) NSArray *DataStatus;
#property (nonatomic, strong) NSArray *Datadate;
#end
InvoiceViewController.m
#import "InvoiceViewController.h"
#import "InvoiceCell.h"
#interface InvoiceViewController ()
#end
#implementation InvoiceViewController
#synthesize DataImages,DataName,Datatype,DataAmount,DataStatus,Datadate;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
DataImages = #[#"img1.jpg", #"img2.jpg", #"img3.jpg", #"img4.jpg", #"img5.jpg"];
DataName = #[#"Suit", #"Shirt", #"paint", #"Suit", #"Suit"];
Datatype = #[#"Brown", #"Black", #"Blue", #"Black", #"Blue"];
DataAmount = #[#"$500", #"$400",#"$500", #"$400",#"$300"];
DataStatus = #[#"Paid", #"Due", #"Paid", #"Due", #"Paid"];
Datadate = #[#"8/5/2014", #"10/6/2014",#"8/5/2014", #"10/6/2014",#"8/5/2014"];
}
- (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 DataName.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"InvoiceCell";
InvoiceCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell==nil)
{
cell = [[InvoiceCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
long row = [indexPath row];
NSLog(#"%#", cell.ItemName.text = DataName[row]);
cell.ItemName.text = DataName[row];
cell.ItemType.text = Datatype[row];
cell.ItemImage.image = [UIImage imageNamed:DataImages[row]];
cell.date.text = Datadate[row];
cell.Amount.text = DataAmount[row];
cell.status.text = DataStatus[row];
return cell;
}
In the Debug Window and console Data show but not show data on simulator screen in the tableview cells
Thank you.
You may have a tableView in your StoryBoard, but you have no connection to it in your code. Add this to your InvoiceViewController.h
#property IBOutlet UITableView *tableView;
and hook it up to your TableView in Interface Builder.
Then you can set the DataSource and Delegate in your InvoiceViewController.m -[viewDidLoad] method
_tableView.delegate = self;
_tableView.dataSource = self;
Now the TableView will know to call the delegate methods you implemented and you should see your data in the table.
I'm trying to send text generated by the user from the AuthenticationViewController to MainProfileViewController. I'm not receiving an error report. The label just doesn't even appear in the MainProfileViewController. The outlets are correctly hooked up. Thanks for the help!
#import <UIKit/UIKit.h>
#class MainProfileViewController;
#interface AuthenticationViewController : UIViewController
{
MainProfileViewController *mainProfileViewController;
}
#property (retain, nonatomic) IBOutlet UITextField *usernameTextField;
#end
#import "AuthenticationViewController.h"
#import "MainProfileViewController.h"
#interface AuthenticationViewController ()
#end
#implementation AuthenticationViewController
#synthesize usernameTextField;
- (IBAction)createAccount: (id)sender {
{
mainProfileViewController = [[MainProfileViewController alloc] init];
mainProfileViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
mainProfileViewController.userText.text = usernameTextField.text;
[self presentViewController:mainProfileViewController animated:YES completion:nil];
}
}
#end
#import <UIKit/UIKit.h>
#import "AuthenticationViewController.h"
#interface MainProfileViewController : UIViewController
{
UITextField *userText;
}
#property (retain, nonatomic) IBOutlet UILabel *resultLabel;
#property (retain, nonatomic) IBOutlet UITextField *userText;
#property (retain, nonatomic) NSString *textPass;
#end
#import "MainProfileViewController.h"
#import "AuthenticationViewController.h"
#interface MainProfileViewController ()
#end
#implementation MainProfileViewController
#synthesize resultLabel, userText, textPass;
- (void)viewDidLoad
{
userText.text = textPass;
[super viewDidLoad];
}
#end
OK, there's a few things you're doing wrong.
First off, you're instantiating a local MainProfileViewController instead of instantiating the one that you have an ivar pointing to.
The second thing that you're doing wrong is trying to send over the view from the AuthenticationViewController to the MainProfileViewController. You shouldn't do that. Instead, pass the text itself; otherwise you are just overwriting pointers, and nothing will show up.
- (IBAction)createAccount: (id)sender {
// DON'T CREATE A LOCAL VARIABLE
// MainProfileViewController *controller = [[MainProfileViewController alloc] initWithNibName:#"MainProfileViewController" bundle:nil];
mainProfileViewController = [[MainProfileViewController alloc] initWithNibName:#"MainProfileViewController" bundle:nil];
mainProfileViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
// DON'T TRY SENDING THE VIEW OVER
// mainProfileViewController.userText = usernameTextField;
mainProfileViewController.userText.text = usernameTextField.text;
[self presentViewController:mainProfileViewController animated:YES completion:nil];
}
edit: I suppose it's not required that you have an ivar to the new view controller you want to present... But the point is that you cannot instantiate one, and then set the parameter on the one you did not instantiate (it will be nil).
Check your story board and see if you connected the Outlets properly.
There should be an IBOutlet object in your view controller that you should connect in story board.
Also check if you connected the correct view controller class to the view controller in storyboard
#import <UIKit/UIKit.h>
#class MainProfileViewController;
#interface AuthenticationViewController : UIViewController
{
MainProfileViewController *mainProfileViewController;
}
#property (retain, nonatomic) IBOutlet UITextField *usernameTextField;
#end
#import "AuthenticationViewController.h"
#import "MainProfileViewController.h"
#interface AuthenticationViewController ()
#end
#implementation AuthenticationViewController
#synthesize usernameTextField;
- (IBAction)createAccount: (id)sender {
{
MainProfileViewController *controller = [[MainProfileViewController alloc] initWithNibName:#"MainProfileViewController" bundle:nil];
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
mainProfileViewController.textpass = usernameTextField.text;
[self presentViewController:controller animated:YES completion:nil];
}
}
#end
#import <UIKit/UIKit.h>
#import "AuthenticationViewController.h"
#interface MainProfileViewController : UIViewController
{
UITextField *userText;
}
#property (retain, nonatomic) IBOutlet UILabel *resultLabel;
#property (retain, nonatomic) IBOutlet UITextField *userText;
#property (retain, nonatomic) NSString *textpass;
#end
#import "MainProfileViewController.h"
#import "AuthenticationViewController.h"
#interface MainProfileViewController ()
#end
#implementation MainProfileViewController
#synthesize resultLabel, userText;
- (void)viewDidLoad {
usertext.text=textpass;
}
#end
You need to change your code on this part...
- (IBAction)createAccount: (id)sender
{
mainProfileViewController = [[MainProfileViewController alloc] init];
mainProfileViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
mainProfileViewController.userText.text = usernameTextField.text;
[self presentViewController:mainProfileViewController animated:YES completion:nil];
}
Happy Coding...
my problem - I want to pass information from the TableView in DetailView, but somewhere in the self.detailViewController.detailItem no value is passed.
that is:
self.detailViewController.detailItem =#"123";
NSString *sss = self.detailViewController.detailItem;
NSLog(#"%#", sss);
In NSLog output (null)
Here is my source code:
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController <UISplitViewControllerDelegate>
#property id detailItem;
#property id TitleOfDetail;
#property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
#end
DetailViewController.m
#import "DetailViewController.h"
#interface DetailViewController ()
#property (strong, nonatomic) UIPopoverController *masterPopoverController;
- (void)configureView;
#end
#implementation DetailViewController
#pragma mark - Managing the detail item
-(void)setTitleOfDetail:(id)newTitleOfDetail {
NSLog(#"123");
if (_TitleOfDetail != newTitleOfDetail) {
_TitleOfDetail = newTitleOfDetail;
// Update the view.
[self configureView];
}
}
-(void)setDetailItem:(id)newDetailItem
{
NSLog(#"123");
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
if (self.masterPopoverController != nil) {
self.title = self.TitleOfDetail;
[self.masterPopoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
NSLog(#"1%#", self.TitleOfDetail);
NSLog(#"2%#", [self.detailItem description]);
if (self.TitleOfDetail) {
self.title = self.TitleOfDetail;
}
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
}
…
myclass.h
#class DetailViewController;
#interface myclass : UITableViewController
#property DetailViewController *detailViewController;
#end
myclass.m
#import "choiseAvtoController.h"
#import "DetailViewController.h"
#interface myclass ()
#end
#implementation myclass
#synthesize detailViewController;
…
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
self.detailViewController.detailItem =#"123";
NSString *sss = self.detailViewController.detailItem;
NSLog(#"%#", sss);
}
In what may be the problem and how to fix it?
P.S. Sorry for my english, I'm just learning))
Since you are using a storyboard, you should be opening the detail controller on a segue.
Look up the segue identifier (say, it's OpenDetail) in the story board, then add the following code to your initial controller:
-(void)prepareForSegue:(UIStoryboardPopoverSegue*)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"OpenDetail"]) {
DetailViewController *dest = segue.destinationViewController;
dest.detailItem =#"123";
}
}
The idea is that I hava a custom view where the user can drag and drop one or more files and the controller is able to save the path of files into an array.
How can I run a method from AppDelegate after the user drops the file in the interface?
I have these files:
AppDelegate.h:
#import <Cocoa/Cocoa.h>
#interface AppDelegate : NSObject <NSApplicationDelegate>
#property (assign) IBOutlet NSScrollView *table;
#property (assign) IBOutlet NSWindow *window;
#end
AppDelegate.m:
#import "AppDelegate.h"
#implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// Insert code here to initialize your application
}
#end
DropView.h:
#import <Cocoa/Cocoa.h>
#interface DropView : NSView <NSDraggingDestination>
#property (assign) IBOutlet NSScrollView *table;
#property NSArray *draggedFilePaths;
#end
DropView.m:
#import "DropView.h"
#implementation DropView
#synthesize draggedFilePaths;
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self registerForDraggedTypes:[NSArray arrayWithObject:NSURLPboardType]];
}
return self;
}
-(NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender{
return NSDragOperationGeneric;
}
-(NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender{
return NSDragOperationCopy;
}
-(BOOL)prepareForDragOperation:(id<NSDraggingInfo>)sender{
return YES;
}
-(BOOL)performDragOperation:(id<NSDraggingInfo>)sender{
NSPasteboard* prb;
prb= [sender draggingPasteboard];
draggedFilePaths = [prb propertyListForType:NSFilenamesPboardType];
return YES;
}
- (void)concludeDragOperation:(id<NSDraggingInfo>)sender{
[self setNeedsDisplay:YES];
NSLog(#"path %#",draggedFilePaths);
[self populateTable];
}
- (void)drawRect:(NSRect)dirtyRect
{
}
-(void)populateTable{
NSLog(#"yes");
}
#end
Import AppDelegate.h into DropView.m, and call the method you want to run from the performDragOperation: method.
-(BOOL)performDragOperation:(id<NSDraggingInfo>)sender{
NSPasteboard* prb;
prb= [sender draggingPasteboard];
draggedFilePaths = [prb propertyListForType:NSFilenamesPboardType];
[(AppDelegate *)[[NSApplication sharedApplication]delegate] doWhatever:draggedFilePaths];
return YES;
}
Where doWhatever: is a method implemented in the app delegate.