I think I'm not getting the handle on address book and UITableView, or maybe I'm just making it simpler than it is.
here is my .h file:
#interface Contacts : UITableViewController <ABPeoplePickerNavigationControllerDelegate> {
NSMutableArray *menuArray;
NSString *firstName;
NSString *lastName;
UIButton *addcontact;
}
#property (nonatomic, retain) NSMutableArray *menuArray;
#property (nonatomic, strong) UIButton *addcontact;
#property (nonatomic, strong) NSString *firstName;
#property (nonatomic, strong) NSString *lastName;
-(void)showPeoplePickerController;
#end
And my .m file:
-(IBAction)addcontact:(id)sender {
ABPeoplePickerNavigationController *peoplePicker=[[ABPeoplePickerNavigationController alloc] init];
[peoplePicker setPeoplePickerDelegate:self];
[self presentModalViewController:peoplePicker animated:YES]; }
- (void)viewDidLoad
{
menuArray = [[NSMutableArray alloc] init];
[super viewDidLoad];
}
- (BOOL)peoplePickerNavigationController:
(ABPeoplePickerNavigationController *)peoplePicker
shouldContinueAfterSelectingPerson:(ABRecordRef)person {
firstName = (__bridge NSString *)ABRecordCopyValue(person, kABPersonFirstNameProperty);
[menuArray addObject:firstName];
lastName = (__bridge NSString *)ABRecordCopyValue(person, kABPersonLastNameProperty);
[menuArray addObject:lastName];
[self dismissModalViewControllerAnimated:YES];
return NO;}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [menuArray 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];
}
NSString *cellValue = [menuArray objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
return cell;
}
I hope someone could help me with it, I'm fairley new to UITableViews and Addressbooks :)
For performance purposes (not to mention animation purposes), UITableView does not automatically update itself whenever the data source changes.
Try adding [myTableView reloadData]; after you add the first and last name to the arrays (or in viewWillAppear:
Related
I am very new to Objective.I am trying to make a simple application and after adding more view I get this error "Thread 1 Signal SIGABRT" and the app wont open in iOS Simulator. The error points to this line of code:
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
I tried searching before but I didn't understand what the other answers were talking about.
NamesTableViewController.h is :
#import <UIKit/UIKit.h>
#interface NamesTableViewController : UITableViewController <UISearchDisplayDelegate, UISearchBarDelegate>
#property (strong, nonatomic) IBOutlet UISearchBar *searchBar;
#end
NamesTableViewController.m is:
#import "NamesTableViewController.h"
#interface NamesTableViewController ()
#property (nonatomic, copy) NSDictionary *propertyList;
#property (nonatomic, copy) NSArray *letters;
#property (nonatomic, copy)NSMutableArray *filteredNames;
#property (nonatomic, strong)UISearchController *searchController;
#end
#implementation NamesTableViewController
#synthesize propertyList, letters, filteredNames, searchController;
- (void)viewDidLoad {
[super viewDidLoad];
UITableView *tableView = (id)[self.view viewWithTag:1];
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
filteredNames = [[NSMutableArray alloc]init];
searchController = [[UISearchController alloc]init];
self.searchController.searchResultsUpdater = self;
NSString *path = [[NSBundle mainBundle] pathForResource:#"names" ofType:#"plist"];
self.propertyList = [NSDictionary dictionaryWithContentsOfFile:path];
self.letters = [[self.propertyList allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView.tag == 1){
return self.letters.count;
}else {
return 1;
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView.tag == 1) {
NSString *letter = self.letters[section];
NSArray *keyValues = [self.propertyList[letter] allKeys];
return keyValues.count;
} else {
return [filteredNames count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
if (tableView.tag == 1){
NSString *letter = self.letters[indexPath.section];;
NSArray *keyValues = [[self.propertyList[letter] allKeys] sortedArrayUsingSelector:#selector(compare:)];
cell.textLabel.text = keyValues[indexPath.row];
} else{
cell.textLabel.text = filteredNames[indexPath.row];
}
return cell;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return self.letters;
}
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (tableView.tag == 1) {
return letters [section];
} else {
return nil;
}
}
#pragma mark Search Display Delegate Methods
-(void)searchDisplayController:(UISearchController *)controller didLoadSearchResultsTableView:(UITableView *)tableView {
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
-(BOOL)searchDisplayController:(UISearchController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[filteredNames removeAllObjects];
if (searchString.length > 0) {
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [search] %#", self.searchBar.text];
for (NSString *letter in letters) {
NSArray *matches = [[self.propertyList[letter] allKeys]filteredArrayUsingPredicate:predicate];
[filteredNames addObjectsFromArray:matches];
}
}
return YES;
}
#end
If you want more information just say it to me by answers and I will edit my question and then you will edit your answer
[keys allKeys] returns an single-level array. Therefore there can be only one section.
Edit:
For better understanding and readability I replaced names with letters and keys with propertyList
• .h
The methods numberOfRowsInSection and cellForRowAtIndexPath retrieve the section letter and then the appropriate keys from the property list.
A dictionary as data source is not the best choice because there are many repetitive tasks to perform for example the sorting. Better create an nested array as data source in viewDidLoad
#interface NamesTableViewController ()
#property (nonatomic, copy) NSDictionary *propertyList;
#property (nonatomic, copy) NSArray *letters;
#end
• .m
#implementation NamesTableViewController
#synthesize propertyList, letters;
- (void)viewDidLoad {
[super viewDidLoad];
NSString *path = [[NSBundle mainBundle] pathForResource:#"names" ofType:#"plist"];
self.propertyList = [NSDictionary dictionaryWithContentsOfFile:path];
self.letters = [[self.propertyList allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return self.letters.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSString *letter = self.letters[section];
NSArray *keyValues = [self.propertyList[letter] allKeys];
return keyValues.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
NSString *letter = self.letters[indexPath.section];
NSArray *keyValues = [[self.propertyList[letter] allKeys] sortedArrayUsingSelector:#selector(compare:)];
cell.textLabel.text = keyValues[indexPath.row];
return cell;
}
-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return self.letters;
}
#end
#interface PADiscover : NSObject
#property (nonatomic, assign) unsigned int dw3C;
#property (nonatomic, assign) BOOL isSet;
#property (nonatomic, assign) PAContactModel model;
#end
In another VC
#property (nonatomic, strong) NSMutableDictionary *shakeDict;
Then I add some objects to shakeDict
- (void)viewDidLoad {
NSNumber *num = [NSNumber numberWithUnsignedInt:message.sDeviceInfo.dw3CId];
PADiscover *discover = [[PADiscover alloc] init];
discover.dw3C = message.sDeviceInfo.dw3CId;
discover.model = message.sDeviceInfo.dwDeviceType;
discover.isSet = message.sDeviceInfo.fgPasswdFlag;
[_shakeDict setObject:discover forKey:[NSString stringWithFormat:#"%#", num]];
[_shakeTV reloadData];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier];
}
PADiscover *discover = [[_shakeDict allKeys] objectAtIndex:indexPath.row];
**cell.textLabel.text = [NSString stringWithFormat:#"ID %u, ISSet %d", discover.dw3C, discover.isSet];//crashed!**
cell.detailTextLabel.text = [NSString stringWithFormat:#"model %d", discover.model];
cell.detailTextLabel.font = [UIFont boldSystemFontOfSize:11];
return cell;
}
It seems cannot deference PADiscover successfully,but I'm not sure when place I get some wrong.
can anyone explain that for me?
Try this,
NSString *key = [[_shakeDict allKeys] objectAtIndex:indexPath.row];
PADiscover *discover = [_shakeDict objectForKey:key];
instead of
PADiscover *discover = (PADiscover *)[[_shakeDict allKeys] objectAtIndex:indexPath.row];
At least this line may be error:
#property (nonatomic, assign) PAContactModel model;
change to strong if a model class.
#property (nonatomic, strong) PAContactModel model;
I have a small application, where i'm trying to load some data in UITableView from a sqlite database. Apparently everything works fine, but when I try to scroll i get Null data.
My code:
self.tblContacts.dataSource = self;
self.tblContacts.delegate = self;
self->mainManager = [[MainManager alloc] init: [NSString stringWithFormat:#"%#/contacts.db", resourcePath]];
self->contactList = [[ContactManager alloc] init];
self->contactList = [mainManager loadContacts];
-----------------------------------------------------
- (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 [self->contactList getContactsCount];
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellID = #"Cell";
CustomCell *Cell = [tableView dequeueReusableCellWithIdentifier:CellID];
if (!Cell)
Cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellID];
Cell.lblCompany.text = [[self->contactList getContact:indexPath.row] company];
Cell.lblContact.text = [NSString stringWithFormat:#"%# %#", [[self->contactList getContact:indexPath.row] name], [[self->contactList getContact:indexPath.row] surname]];
return Cell;
}
ScreenShot:
If anyone can enlighten me please. Thanks in advance.
Best regards.
I solved it. I'm noob in objective-c and i need to learn more about (strong, weak, retain, assign). I just replace weak by retain in my Contact Class:
#property (retain) NSString *name;
#property (retain) NSString *surname;
#property (retain) NSString *company;
#property (retain) NSString *cif;
#property (retain) NSString *email;
#property (retain) NSString *address;
#property (retain) NSString *city;
#property (retain) NSString *telephone;
#property (retain) NSString *provider;
strong = retain:
it says "keep this in the heap until I don't point to it anymore" in
other words " I'am the owner, you cannot dealloc this before aim fine
with that same as retain"
weak:
it says "keep this as long as someone else points to it strongly"
Source: Objective-C ARC: strong vs retain and weak vs assign
Now works perfectly!
Thanks anyway, regards.
Try this,
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellID = #"Cell";
CustomCell *cell = (CustomCell *) [tableView dequeueReusableCellWithIdentifier:CellID];
if (cell == nil)
{
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
for (id currentObject in topLevelObjects)
{
if ([currentObject isKindOfClass:[UITableViewCell class]])
{
cell = (CustomCell *) currentObject;
break;
}
}
}
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
Cell.lblCompany.text = [[self->contactList getContact:indexPath.row] company];
Cell.lblContact.text = [NSString stringWithFormat:#"%# %#", [[self->contactList getContact:indexPath.row] name], [[self->contactList getContact:indexPath.row] surname]];
return Cell;
}
there is a strange problem I have not met ever
there is an array() including some custom object named MyClass parsed by JSONKit;
when I keep scrolling the tableview the memory will keeping increasing too.
but when replace
cell.textLabel.text = myclass.name;
with
cell.textLabel.text = #"cool";
or
cell.textLabel.text = [NSString stringWithFormate:#"a-%d", indexPath.row];
it's ok the memory with keep stable
but if I use
cell.textLabel.text = [NSString stringWithFormate:#"a-%#-i",myclass.name, indexPath.row];
it also keep increasing;
It will drive my crazy!!
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *identifier = #"Singers";
OMTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
MyClass *myclass = [self.data objectAtIndex:indexPath.row];
if (cell == nil){
cell = [[[OMTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier] autorelease];
}
cell.textLabel.text = myclass.name;
return cell;
}
MyClass
there is two class one Base another inherit
Base:
#interface OMBase : NSObject {
NSMutableDictionary *data;
NSString *name;
NSArray *keys;
}
#property (nonatomic, retain) NSString *name;
#property (nonatomic, copy) NSMutableDictionary *data;
#implementation OMBase
#synthesize data, name;
- (void)setData:(NSMutableDictionary *)adata{
if (data){
[data release];
data = nil;
}
data = [adata mutableCopy];
}
- (void)dealloc{
if (keys){
[keys release];
}
[data release];
[super dealloc];
}
- (id)init{
if (self = [super init]){
self.data = [[[NSMutableDictionary alloc] initWithCapacity:20] autorelease];
}
return self;
}
inherit:
#import "OMBase.h"
#interface OMLyric : OMBase
- (NSString *)songid;
- (NSString *)content;
#import "OMLyric.h"
#implementation OMLyric
- (NSString *)songid{
return [data objectForKey:#"songid"];
}
- (NSString *)content{
return [data objectForKey:#"content"];
}
Seems like your myclass.name getter returns a new allocated object. We can't say more without seeing myclass.
edit: I think the problem is in the last referenced code, because when I try to load the table data instead of the search results (by just swapping the arrays) I still get no search results, but I'm still not sure why... Original post in full:
I'm trying to get a search bar working with my table view. I can enter text in the search bar but always find no results. Here's my .h
#interface SecondViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate, UISearchDisplayDelegate> {
IBOutlet UISearchBar *searchBar;
NSMutableArray *dummyArray;
NSMutableArray *searchArray;
}
#property (nonatomic, strong) NSMutableArray *dummyArray;
#property (nonatomic, strong) NSMutableArray *searchArray;
#property (nonatomic, strong) NSMutableArray *detailArray;
#property (nonatomic, strong) NSMutableArray *imageArray;
- (void) setupArray;
- (void) setupSearchArray;
- (void) setupDetailArray;
#end
In my .m, dummyArray is the array that fills the main cell.textLabel.text and the array i want to search.
I set up searchArray here:
- (void) setupSearchArray{
searchArray = [NSMutableArray arrayWithCapacity:[dummyArray count]];
}
then attempt to make searchArray a filtered version of dummyArray here:
- (BOOL) searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[searchArray removeAllObjects] ;
for (NSString *savedSeachTerm in dummyArray) {
NSRange result = [savedSeachTerm rangeOfString:searchString options:
NSCaseInsensitiveSearch];
if (result.location != NSNotFound)
[searchArray addObject:savedSeachTerm];
}
return YES;
}
and try to populate the table with search results when search text is entered here:
- (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];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [searchArray objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [detailArray objectAtIndex:indexPath.row];
}
else {
cell.textLabel.text = [dummyArray objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [detailArray objectAtIndex:indexPath.row];
}
if (indexPath.row == 0) {
cell.imageView.image = [UIImage imageNamed:#"row0.png"];
}
return cell;
}
What have I done wrong? Thanks for looking!
I had forgotten to
[self setupSearchArray];
sorry!