linking from dynamic table cells to specific view controllers - ios

I am trying to link from a dynamic table view cell (as part of a search result table) to a specific view controller
The code I have implemented so far is:
SearchViewController.h
import <UIKit/UIKit.h>
#interface SearchViewController : UITableViewController <UISearchDisplayDelegate, UISearchDisplayDelegate>
#property (strong,nonatomic) NSArray *sysTArray;
#property (strong,nonatomic) NSMutableArray *filteredsysTArry;
#property IBOutlet UISearchBar *sysTSearchBar;
#end
SearchViewController.M
#import "SearchViewController.h"
#import "sysT.h"
#interface SearchViewController ()
#end
#implementation SearchViewController
#synthesize sysTArray;
#synthesize filteredsysTArry;
#synthesize sysTSearchBar;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
sysTArray = [NSArray arrayWithObjects:
[sysT sysTOfCategory:#"p" name:#"H1"],
[sysT sysTOfCategory:#"p" name:#"W2"],
[sysT sysTOfCategory:#"p" name:#"W3"],
[sysT sysTtOfCategory:#"p" name:#"C4"],
[sysT sysTOfCategory:#"c" name:#"O5"],
[sysT sysTOfCategory:#"c" name:#"C6"],
[sysT sysTOfCategory:#"a" name:#"L7"], nil];
self.filteredSysTArry = [NSMutableArray arrayWithCapacity:[sysTArray count]];
[self.tableView reloadData];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [filteredsysTArry count];
}else{
return [sysTArray count];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
- (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];
}
SysT *sysT = nil;
if (tableView == self.searchDisplayController.searchResultsTableView) {
sysT = [filteredsysTArry objectAtIndex:indexPath.row];
}else{
sysT = [sysTArray objectAtIndex:indexPath.row];
}
cell.textLabel.text = sysT.name;
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
#pragma mark Search Filtering
-(void)filterContentForSearchText:(NSString*) searchText scope:(NSString*)scope {
[self.filteredSysTArry removeAllObjects];
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF.name contains[c] %#", searchText];
filteredSysTArry = [NSMutableArray arrayWithArray:[sysTArray filteredArrayUsingPredicate:predicate]];
}
#pragma mark - UISearchDisplayController Delegate Methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[self filterContentForSearchText:searchString scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex: [self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
return YES;
}
-(BOOL) searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
[self filterContentForSearchText:self.searchDisplayController.searchBar.text scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
return YES;}
#end
How do I initiate a specific view controller depending on the data inside the dynamic cell?
To further elaborate, if a user searched H1, and then clicked on that dynamic cell, how would I display the relevant H1 view controller?
As you can probably tell from my very rough code, I'm on a steep learning curve. If you could make your answers as baby proof as possible that would be fantastic, and would really help me out. (Also, I am using storyboards).
Thanks!

You need to implement tableView:didSelectRowAtIndexPath: which is called when you select a row. You can get the data for that row by querying your data source, using the indexPath passed into that method. You can then use whatever logic you need to choose which view controller to go to next. You do that by calling performSegueWithIdentifier.

Related

Transitioning from UISearchDisplayController ==> UISearchController can't get search bar to show

I have an app that was written for iOS 7 the I need to update as UISearchDisplayController is deprecated for UISearchController.
I have went through several tutorials and tried but I cannot get this to work, however I am close.
I am following this pattern.
The problem I am running into is that the pattern I am following loads the data from a son file into an NSDict object, but my data is in an Array. No problem, I just modified the search to use a predicate (I hard coded something for now, get all records with an E in the name).
But I am getting the following error:
2017-09-12 13:01:41.538 Scoular[7644:1963822] -[employee isEqualToString:]: unrecognized selector sent to instance 0x608000105580
2017-09-12 13:01:41.604 Scoular[7644:1963822] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[employee isEqualToString:]: unrecognized selector sent to instance 0x608000105580'
In the SearchResultsTableViewController.m file, at the line
cell.textLabel.text = self.searchResults[indexPath.row];
from the m file below. I am stumped. Any help would be greatly appreciated.
#import "SearchResultsTableViewController.h"
#interface SearchResultsTableViewController ()
#property (nonatomic, strong) NSArray *array;
#end
#implementation SearchResultsTableViewController
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.searchResults count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"SearchResultCell" forIndexPath:indexPath];
cell.textLabel.text = self.searchResults[indexPath.row];
return cell;
}
#end
Header File
#import UIKit;
#class EmployeeDetailViewController;
#import <CoreData/CoreData.h>
#import "EmployeeDatabase.h"
#interface EmployeeListViewController : UITableViewController
#end
Implementation File
#import "EmployeeListViewController.h"
#import "EmployeeDetailViewController.h"
#import "SearchResultsTableViewController.h"
#interface EmployeeListViewController () <UISearchResultsUpdating>
#property (nonatomic, strong) NSMutableArray *employees;
#property (nonatomic, strong) UISearchController *searchController;
#property (nonatomic, strong) NSMutableArray *searchResults;
#property (nonatomic,retain) NSMutableDictionary *sections;
#end
#implementation EmployeeListViewController
BOOL isSearching;
//Do I still need this
- (void)awakeFromNib {
if ([[UIDevice currentDevice] userInterfaceIdiom] ==
UIUserInterfaceIdiomPad) {
self.clearsSelectionOnViewWillAppear = NO;
self.preferredContentSize = CGSizeMake(320.0, 600.0);
}
[super awakeFromNib];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Get array of employees and sections
self.employees = [EmployeeDatabase getEmployees];
self.sections = [EmployeeDatabase getSections:_employees];
// There's no transition in our storyboard to our search results tableview or navigation controller
// so we'll have to grab it using the instantiateViewControllerWithIdentifier: method
UINavigationController *searchResultsController = [[self storyboard] instantiateViewControllerWithIdentifier:#"TableSearchResultsNavController"];
// Our instance of UISearchController will use searchResults
self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
// The searchcontroller's searchResultsUpdater property will contain our tableView.
self.searchController.searchResultsUpdater = self;
// The searchBar contained in XCode's storyboard is a leftover from UISearchDisplayController.
// Don't use this. Instead, we'll create the searchBar programatically.
self.searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x,
self.searchController.searchBar.frame.origin.y,
self.searchController.searchBar.frame.size.width, 44.0);
self.tableView.tableHeaderView = self.searchController.searchBar;
// Set the back bar button
UIBarButtonItem *backButton =
[[UIBarButtonItem alloc] initWithTitle:#"Employees"
style:UIBarButtonItemStylePlain
target:nil
action:nil];
self.navigationItem.backBarButtonItem = backButton;
}
#pragma mark - Table Sections
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
NSInteger tmpCount;
if (isSearching) {
tmpCount = 1;
} else {
tmpCount = [[self.sections allKeys] count];
}
return tmpCount;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.employees count];
}
#pragma mark - Table View
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
}
employee *thisEmployee =
[[self.sections
valueForKey:[[[self.sections allKeys]
sortedArrayUsingSelector:
#selector(localizedCaseInsensitiveCompare:)]
objectAtIndex:indexPath.section]]
objectAtIndex:indexPath.row];
cell.textLabel.text = thisEmployee.fulNme;
return cell;
}
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section {
NSString *tmpString;
//if (tableView == self.searchDisplayController.searchResultsTableView) {
//tmpString = nil;
//} else {
tmpString =
[[[self.sections allKeys]
sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:
)] objectAtIndex:section];
//}
return tmpString;
}
#pragma mark - Right side bar alphabetical index
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
NSArray *tmpTitle;
if (isSearching) {
tmpTitle = nil;
} else {
tmpTitle = [[self.sections allKeys]
sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
}
return tmpTitle;
}
#pragma mark - UISearchControllerDelegate & UISearchResultsDelegate
// Called when the search bar becomes first responder
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
{
// Set searchString equal to what's typed into the searchbar
NSString *searchString = self.searchController.searchBar.text;
[self updateFilteredContentForAirlineName:searchString];
// If searchResultsController
if (self.searchController.searchResultsController) {
UINavigationController *navController = (UINavigationController *)self.searchController.searchResultsController;
// Present SearchResultsTableViewController as the topViewController
SearchResultsTableViewController *vc = (SearchResultsTableViewController *)navController.topViewController;
// Update searchResults
vc.searchResults = self.searchResults;
// And reload the tableView with the new data
[vc.tableView reloadData];
}
}
// Update self.searchResults based on searchString, which is the argument in passed to this method
- (void)updateFilteredContentForAirlineName:(NSString *)employeeName
{
if (employeeName == nil) {
// If empty the search results are the same as the original data
self.searchResults = [self.employees mutableCopy];
} else {
NSArray *searchResults2 = [[NSMutableArray alloc] init];
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"fulNme contains 'E'"];
searchResults2 = [self.employees filteredArrayUsingPredicate:predicate];
self.searchResults = [searchResults2 mutableCopy];
}
}
#end
In your updateFilteredContentForAirlineName function you are searching from self.employees array which probably contains employee custom class object. For that reason your self.searchResults array also containing same class object.
But in your cellForRowAtIndexPath of SearchResultsTableViewController your are doing cell.textLabel.text = self.searchResults[indexPath.row]; that means you are adding employee object as string in cell.textLabel which causing your app to crash. Instead you can try this:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"SearchResultCell" forIndexPath:indexPath];
employee *thisEmployee = self.searchResults[indexPath.row];
cell.textLabel.text = thisEmployee.fulNme;
return cell;
}

UISearch Controller Showing data not part of the filtered array

My Question is this. Why is the filtered table view showing rooms, after I start typing in the search bar that are not present when printing the filtered array to the console. I thought it might be that the table view cells are being reused so set the cell label text to nil to ensure the text gets reset in tableviewcellforindex: method , all to no avail. Can anyone help?
This is my Table View Controller that acts as the data source and delegate for for both my standard tableview and filtered tableview
#import <UIKit/UIKit.h>
#import "Rooms.h"
#interface RoomsTableViewController : UITableViewController
<UISearchControllerDelegate,UISearchResultsUpdating,UISearchBarDelegate,UITableViewDelegate>
#property (strong,nonatomic) NSMutableArray *roomList;
#property (strong,nonatomic) NSMutableArray *orderedRoomList;
#property (strong,nonatomic) NSMutableArray *filteredRooms;
#property (strong,nonatomic) UITableViewController *searchResultsController;
#property (strong,nonatomic) UISearchController *searchController;
#end
#import "RoomsTableViewController.h"
#interface RoomsTableViewController ()
#property BOOL searchControllerWasActive;
#property BOOL searchControllerSearchFieldWasFirstResponder;
#end
The implementation file
#implementation RoomsTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
//sort the room list into filetred by alpha numeric A10 before C1 example this will eventually be done on the server
NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:#"name" ascending:YES comparator:^NSComparisonResult(id obj1, id obj2) {
return [(NSString *)obj1 compare:(NSString *)obj2 options:NSNumericSearch];
}];
self.orderedRoomList = (NSMutableArray*)[self.roomList sortedArrayUsingDescriptors:[NSArray arrayWithObject:sort]];
self.searchResultsController= [[UITableViewController alloc]initWithStyle:UITableViewStylePlain];
self.searchController = [[UISearchController alloc]initWithSearchResultsController:self.searchResultsController];
self.searchController.searchResultsUpdater=self;
[self.searchController.searchBar sizeToFit];
self.tableView.tableHeaderView=self.searchController.searchBar;
//set up the data source and delegate of this new table view to be this (roomsTableviewcontroller) view controller
self.searchResultsController.tableView.delegate=self;
self.searchResultsController.tableView.dataSource=self;
self.searchController.delegate=self;
self.searchController.dimsBackgroundDuringPresentation=NO;
self.searchController.searchBar.delegate=self;
self.definesPresentationContext=YES;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
//restore the search controllers active state
if (self.searchControllerWasActive) {
self.searchController.active = self.searchControllerWasActive;
_searchControllerWasActive=NO;
if (self.searchControllerSearchFieldWasFirstResponder) {
[self.searchController.searchBar becomeFirstResponder];
_searchControllerSearchFieldWasFirstResponder=NO;
}
}
}
-(void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar
{
[searchBar resignFirstResponder];
}
#pragma mark - UISearchControllerDelegate
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
self.navigationController.navigationBar.translucent = YES;
}
-(void)willDismissSearchController:(UISearchController *)searchController
{
self.navigationController.navigationBar.translucent = NO;
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView==self.tableView) {
return [self.orderedRoomList count];
}else{
return [self.filteredRooms count];
}
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 71;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellReuseIdentifier = #"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellReuseIdentifier];
if (cell==nil) {
cell= [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellReuseIdentifier];
}
Rooms *room = (tableView==self.tableView)? [self.orderedRoomList objectAtIndex:indexPath.row]: [self.filteredRooms objectAtIndex:indexPath.row];
cell.textLabel.text=nil;
NSString *labelString = [NSString stringWithFormat:#"%# %#",room.name,room.roomDescription];
cell.textLabel.text=labelString;
return cell;
}
Below is a photo of the table view in the simulator and a screen print of the check to see if the filtered array has indeed worked correctly as it has. You can see that C3 is not listed as being part of the filtered array but it still appears on screen.

cellForRowAtIndexPath: not called by reloaddata

I know it's a commom problem but the cellForRowAtIndexPath: is not called when I use [actionTableView reloadData];. I already linked dataSource and delegate thanks to the storyboard but it doesn't solve the issue.
Here's a part of my code:
SearchViewController.h
#import <UIKit/UIKit.h>
#interface SearchViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate, UISearchDisplayDelegate>
#property (strong, nonatomic) IBOutlet UITableView *actionTableView;
#property (strong, nonatomic) IBOutlet UISearchBar *actionSearchBar;
#property (strong, nonatomic) NSMutableArray *actionsArray;
#property (strong, nonatomic) NSMutableArray *filteredActionArray;
#end
SearchViewController.m
#import "SearchViewController.h"
#import "Action.h"
#interface SearchViewController ()
#end
#implementation SearchViewController
#synthesize actionsArray, actionTableView, filteredActionArray, actionSearchBar;
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [filteredActionArray count];
} else {
return [actionsArray 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];
}
NSLog(#"Aloha");
// Create a new Action object
Action *a = nil;
if (tableView == self.searchDisplayController.searchResultsTableView) {
a = [filteredActionArray objectAtIndex:indexPath.row];
} else {
a = [actionsArray objectAtIndex:indexPath.row];
}
// Configure the cell
cell.textLabel.text = a.nomAction;
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {
// Update the filtered array based on the search text and scope.
// Remove all objects from the filtered search array
[self.filteredActionArray removeAllObjects];
// Filter the array using NSPredicate
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF.nomAction contains[c] %#",searchText];
filteredActionArray = [NSMutableArray arrayWithArray:[actionsArray filteredArrayUsingPredicate:predicate]];
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
// Tells the table data source to reload when text changes
[self filterContentForSearchText:searchString scope:
[[self.searchDisplayController.searchBar scopeButtonTitles]objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
// Tells the table data source to reload when scope bar selection changes
[self filterContentForSearchText:self.searchDisplayController.searchBar.text scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
As you see I also use a searchBar to filter the array, but w/o this it doesn't work either.
EDIT: SPECIFICATION OF THE PROBLEM: reloadData works only if I call it within the viewController. Not if I call it from another viewController. Obviously for the two cases I call the same function updatingTableView located in the viewcontroller where the tableView is. Any ideas to reload the tableView from anotherViewController?
SearchViewController.m (works)
-(IBAction)update{
[self updatingTableView:nil];
}
-(void)updatingTableView:(NSData*)someData {
actionsArray = [NSArray arrayWithObjects:#"item1", #"item2", #"item3", nil];
[actionTableView reloadData];
}
AnotherViewController.m (does not work)
-(IBAction)updateFromElsewhere{
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main"
bundle: nil];
SearchViewController *searchViewController = (SearchViewController*) [mainStoryboard
instantiateViewControllerWithIdentifier: #"searchcontroller_id"];
[searchViewController updatingTableView:nil];
}
NB: I can pass some data from a view controller to the other without problem here.
One thing I always run into when struggle up a table view is connecting the table with the interface using interface builder. But when you call [actionTableView reloadData] without having the connection made to the table, nothing will happen.
I ways forget that super simple step. Hope this helped
The problem is you never initialize actionsArray and filteredActionArray to be non-nil. As a result, numberOfRowsInSection always returns 0, so cellForRowAtIndexPath won't be called.
Finally found the solution!
In SearchViewController.m where the tableView is, put this in viewDidLoad
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(updatingTableView) name:#"reload_data" object:nil];
With still:
-(void)updatingTableView{
[actionTableView reloadData];
}
In AnotherViewController.m
[[NSNotificationCenter defaultCenter] postNotificationName:#"reload_data" object:self];
how to reload tableview of another uiviewcontroller in current viewcontroller
Thanks everyone!

how to pass the NSMutableArray to UITableView

data values i have one text filed and two buttons.One button is save,second button is show.
when click save button data will be Stored in Core-Data and then i click Show button data will be displayed on Console. It gone nice.
But now i want when Click show button data will be displayed on UITableView So Please Give me any idea
Thanks in advanced,
this is my code:-
#import "SetViewController.h"
#import "AppDelegate.h"
#interface SetViewController ()
{
NSMutableArray *array;
}
#end
#implementation SetViewController
#synthesize textField;
- (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.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)save:(id)sender {
AppDelegate *appD=(AppDelegate *) [[UIApplication sharedApplication]delegate];
NSEntityDescription *entit=[NSEntityDescription insertNewObjectForEntityForName:#"Team" inManagedObjectContext:appD.managedObjectContext];
[entit setValue:textField.text forKey:#"fname"];
NSError *error;
BOOL isSaved=[appD.managedObjectContext save:&error];
NSLog(#"succesfully saved flag: %d",isSaved);
}
- (IBAction)show:(id)sender {
AppDelegate *appDelegat=(AppDelegate*)[[UIApplication sharedApplication]delegate];
NSEntityDescription *entity=[NSEntityDescription entityForName:#"Team" inManagedObjectContext:appDelegat.managedObjectContext];
NSFetchRequest *fetchRr = [[NSFetchRequest alloc]init];
[fetchRr setEntity:entity];
array=[[appDelegat.managedObjectContext executeFetchRequest:fetchRr error:nil]mutableCopy];
NSLog(#"array %#",array);
for (NSManagedObject *obj in array) {
NSLog(#"Name :%#\n",[obj valueForKey:#"fname"]);
}
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
#end
i am tried like this :-
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"ShowData"])
{
ShowViewController *destViewController = segue.destinationViewController;
destViewController.second = [[array valueForKey:#"fname"] componentsJoinedByString(angry)" , "];
NSLog(#" got data for array %#",destViewController.second);
}
}
ShowViewController.h:-
#import <UIKit/UIKit.h>
#import "SetViewController.h"
#interface ShowViewController : UITableViewController<UITableViewDelegate,UITableViewDataSource>
#property (nonatomic, strong) NSString *second;
#end
ShowViewController.m:-
import "ShowViewController.h"
#interface ShowViewController ()
{
NSMutableArray *acess;
}
#end
#implementation ShowViewController
#synthesize second;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
acess =[second componentsSeparatedByString:#", "];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [acess count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;
}
cell.textLabel.text = [acess objectAtIndex:indexPath.row];
return cell;
}
ShowViewController is UITableView.When Click UItableView is open but data will be not Displayed So Please give me any idea
Follow following steps and also read programming guide of UITableview provided by apple:
After getting the array just reload your table view.
Make number of rows = array count.
Customize the cell as per your need.
If you only declared the array as per you shown in code then you must need to initialise it in view did load like this:
array=[NSMutablearray array];
after that get the values from db and stored in array an use UITable view delegate and datasource methods.
First declare your array in your viewDidload() method.
- (void)viewDidLoad
{
yourArray=[[NSArray alloc]initWithObjects:Obj1,obj2,obj3,obj4,obj5, nil];
}
and then use tableview delegate methods. to set array data to tableview.
- (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 [yourArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
// Configure the cell...
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"Cell"];
}
cell.textLabel.text=[yourArray objectAtIndex:indexPath.row];
return cell;
}
If you already have an NSArray that contains your strings, there is no need to go through the whole componentsJoinedByString/componentsSeparatedByString - you can just pass the array to your second view controller.
Accessing the passed data in viewDidLoad won't work though because when you set the property in prepareForSegue the view has already loaded.
Your prepareForSegue should be -
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"ShowData"])
{
ShowViewController *destViewController = (ShowViewController *)segue.destinationViewController;
destViewController.fnames = [array valueForKey:#"fname"];
}
}
In your .h file for ShowViewController declare a property to receive frames -
#property (strong,nonatomic) NSArray *fnames;
Then your table data source methods will be -
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.fnames 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] ;
}
cell.textLabel.text = [self.fnames objectAtIndex:indexPath.row];
return cell;
}

Problems with Search Display Controller

I am learning to use Search Bars a Search Display Controllers in iOS. I made a simple test project with two views, one view contains a UITableView and a UISearchBar, when you select an row from the table view, the new view shows a label with the name of the row. I'm getting a couple of problems, first when I start to add text in the search bar and the search display appears, the search bar is gone. The filtered results are shown, but when I select a row it does not take me to the next view, this only happens when the table is filtered. Here is the code:
ViewController.h
#import <UIKit/UIKit.h>
#import "DetailViewController.h"
#interface ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UISearchDisplayDelegate, UISearchBarDelegate>
#property (strong, nonatomic) IBOutlet UISearchBar *searchBar;
#property (strong, nonatomic) IBOutlet UITableView *tableView;
#end
ViewController.m
#import "ViewController.h"
#interface ViewController ()
#property (nonatomic, strong) NSArray *objects;
#property (nonatomic, strong) NSArray *filteredObjects;
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
_objects = [[NSMutableArray alloc] initWithObjects:#"One", #"Two", #"Three", #"Four", #"Five", #"Six", #"Seven", #"Eight", #"Nine", #"Ten", nil];
_tableView.delegate = self;
_tableView.dataSource = self;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [_filteredObjects count];
} else {
return [_objects count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [_filteredObjects objectAtIndex:indexPath.row];
} else {
cell.textLabel.text = [_objects objectAtIndex:indexPath.row];
}
return cell;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"ToDetail"]) {
DetailViewController *detailViewController = [segue destinationViewController];
if (self.searchDisplayController.active) {
NSIndexPath *indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
detailViewController.detailString = [_filteredObjects objectAtIndex:indexPath.row];
} else {
NSIndexPath *indexPath = [_tableView indexPathForSelectedRow];
detailViewController.detailString = [_objects objectAtIndex:indexPath.row];
}
}
}
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:#"SELF contains[c] %#", searchText];
_filteredObjects = [_objects filteredArrayUsingPredicate:resultPredicate];
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
Thanks for the help!
when I select a row it does not take me to the next view, this only happens when the table is filtered
Because you have no implementation of tableView:didSelectRowAtIndexPath:.
Remember, there is really no such thing as a "filtered table view". There are two table views: the normal one, and the one that appears because of the search display controller. That is a different table view (basically appearing in front of yours), and you must configure it for whatever you want it to do and however you want it to look.

Resources