Push Notification in ios example

https://github.com/NicosKaralis/pushmeup

http://www.raywenderlich.com/32960/apple-push-notification-services-in-ios-6-tutorial-part-1

scheduled timer in background in iphone sdk

UIBackgroundTaskIdentifier backgroundTask;

timer = [NSTimer scheduledTimerWithTimeInterval:1200.0

                                                        target:self

                                                      selector:@selector(runTimer)

                                                      userInfo:nil

                                                       repeats:YES];

   backgroundTask = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{

        NSLog(@"Background handler called. Not running background tasks anymore.");

        [[UIApplication sharedApplication] endBackgroundTask:backgroundTask];

       backgroundTask = UIBackgroundTaskInvalid;

    }];

-(void)runTimer{

}

-(void)stopTimer{

 [timer invalidate];

    timer = nil;

    if (self.backgroundTask != UIBackgroundTaskInvalid)

    {

        [[UIApplication sharedApplication] endBackgroundTask:self.backgroundTask];

        self.backgroundTask = UIBackgroundTaskInvalid;

    }

}

How to make slider menu in iphone sdk?

https://github.com/mikefrederick/MFSideMenu

get Contact email and name using ABAddressBook

-(void)getContactsList{

    CFErrorRef error = NULL;

    

    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, &error);

    

    __block BOOL accessGranted = NO;

    if (ABAddressBookRequestAccessWithCompletion != NULL) { // we're on iOS 6

        dispatch_semaphore_t sema = dispatch_semaphore_create(0);

        ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {

            accessGranted = granted;

            dispatch_semaphore_signal(sema);

        });

        dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);

        

    }

    else { // we're on iOS 5 or older

        accessGranted = YES;

    }

    

    if (accessGranted) {

        ABAddressBookCreateWithOptions(NULL, &error);

    if (addressBook != nil)

    {

        NSLog(@"Succesful.");

        

        NSArray *allContacts = (__bridge_transfer NSArray

                                *)ABAddressBookCopyArrayOfAllPeople(addressBook);

        NSUInteger i = 0;

        for (i = 0; i < [allContacts count]; i++)

        {

            ABRecordRef contactPerson = (__bridge ABRecordRef)allContacts[i];

            NSString *firstName = (__bridge_transfer NSString

                                   *)ABRecordCopyValue(contactPerson, kABPersonFirstNameProperty);

            NSString *lastName =  (__bridge_transfer NSString

                                   *)ABRecordCopyValue(contactPerson, kABPersonLastNameProperty);

            NSString *fullName = [NSString stringWithFormat:@"%@ %@",

                                  firstName, lastName];

            ABMutableMultiValueRef multiEmail;

            multiEmail = ABRecordCopyValue(contactPerson, kABPersonEmailProperty);

            NSString *emailAddress;

            emailAddress = (__bridge NSString *) ABMultiValueCopyValueAtIndex(multiEmail, 0);

            NSMutableDictionary *myAddressBook = [NSMutableDictionary dictionary];

            [myAddressBook setValue:emailAddress forKey:@"email"];

            [myAddressBook setValue:fullName forKey:@"fullName"];

            

            [arrContacts addObject:myAddressBook];

            

            //[arrContacts addObject:[myAddressBook valueForKey:@"email"]];

        }

        NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:@"fullName" ascending:YES];

        [arrContacts sortUsingDescriptors:[NSArray arrayWithObject:sort]];

    }          

    

    CFRelease(addressBook);

    }

}

NSMutableArray sorting in alphabatically

 NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:@"your Key" ascending:YES];

       

 [yourarray sortUsingDescriptors:[NSArray arrayWithObject:sort]];

Textfield hide when keyboard open

//write this code in viewdidload method

[[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(keyboardWillShow:)

                                                 name:UIKeyboardWillShowNotification

                                               object:self.view.window];

    // register for keyboard notifications

    [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(keyboardWillHide:)

                                                 name:UIKeyboardWillHideNotification

                                               object:self.view.window];

    keyboardIsShown = NO;

- (void)keyboardWillHide:(NSNotification *)n

{

    NSDictionary* userInfo = [n userInfo];

    

    // get the size of the keyboard

    CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    

    

    // resize the scrollview

    CGRect viewFrame = scrView.frame;

    // I'm also subtracting a constant kTabBarHeight because my UIScrollView was offset by the UITabBar so really only the portion of the keyboard that is leftover pass the UITabBar is obscuring my UIScrollView.

    viewFrame.size.height += (keyboardSize.height - 100);

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [scrView setFrame:viewFrame];

    [UIView commitAnimations];

    

    keyboardIsShown = NO;

}

- (void)keyboardWillShow:(NSNotification *)n

{

    // This is an ivar I'm using to ensure that we do not do the frame size adjustment on the `UIScrollView` if the keyboard is already shown.  This can happen if the user, after fixing editing a `UITextField`, scrolls the resized `UIScrollView` to another `UITextField` and attempts to edit the next `UITextField`.  If we were to resize the `UIScrollView` again, it would be disastrous.  NOTE: The keyboard notification will fire even when the keyboard is already shown.

    if (keyboardIsShown) {

        return;

    }

    

    NSDictionary* userInfo = [n userInfo];

    

    // get the size of the keyboard

    CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    

    // resize the noteView

    CGRect viewFrame = scrView.frame;

    // I'm also subtracting a constant kTabBarHeight because my UIScrollView was offset by the UITabBar so really only the portion of the keyboard that is leftover pass the UITabBar is obscuring my UIScrollView.

    viewFrame.size.height -= (keyboardSize.height - 100);

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [scrView setFrame:viewFrame];

    [UIView commitAnimations];

    [scrView scrollRectToVisible:activeField.frame animated:YES];

    keyboardIsShown = YES;

}

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{

    activeField = textField;

    return YES;

}

Textfield text search on tableview

txtSearch.returnKeyType = UIReturnKeyDone;

    txtSearch.autocorrectionType = UITextAutocorrectionTypeNo;

    [txtSearch addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];

-(void)textFieldDidChange:(UITextField *)txtFld {

    NSString * match = txtFld.text;

    NSArray *listFiles = [[NSMutableArray alloc]  init];

    NSPredicate *sPredicate = [NSPredicate predicateWithFormat:

                               @"SELF CONTAINS[cd] %@", match];

    

    listFiles = [NSArray arrayWithArray:[[arrGetTask valueForKey:@"task_name"]

                                         filteredArrayUsingPredicate:sPredicate]];

    // Now if you want to sort search results Array

    //Sorting NSArray having NSString as objects

    NSString *strFilter = [match substringFromIndex:0];

    NSLog(@"%@",strFilter);

    if ([strFilter isEqualToString:@"#"]) {

        arrFilter = nil;

    }

    else{

        arrFilter = [[NSMutableArray alloc]initWithArray: [listFiles

                                                           sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)]];

    }

    

   

    

    NSLog(@"%@",arrFilter);

    

    [tblView reloadData];

    //Use sorted array as your Table’s data source

   // -make your table unhidden: yourTbl.hidden = FALSE;

   // - reload your table  : [yourTbl reloadData];

}