ios - 如何在 iOS 的联系人 TableView 中实现搜索栏

Question

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Answer 1

Devi 我的完整答案。它完美地工作。我使用搜索栏。还使用该委托(delegate)方法。

ViewController.h

#import <UIKit/UIKit.h>
#import <Contacts/Contacts.h> //Must import contact framework 

@interface ViewController :  UIViewController<UISearchBarDelegate,UITableViewDataSource,UITableViewDelegate>
@property (strong, nonatomic) IBOutlet UISearchBar *searchbarContacts;
@property (strong, nonatomic) IBOutlet UITableView *tableViewContactData;
@end

ViewController.m

#import "ViewController.h"

@interface ViewController ()
{
  NSMutableArray *arrayTableData;
  NSMutableArray *arraySearchContactData;
}

@end

@implementation ViewController

@synthesize tableViewContactData;

@synthesize searchbarContacts;


- (void)viewDidLoad 
{
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  arrayTableData = [[NSMutableArray alloc]init];
  arraySearchContactData = [[NSMutableArray alloc]init];
  [self fetchContactsandAuthorization];
  [tableViewContactData registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
  [self.view addSubview:tableViewContactData];
}

//Fetching Contact and Authorization access

-(void)fetchContactsandAuthorization
{
  // Request authorization to Contacts
  CNContactStore *store = [[CNContactStore alloc] init];
  [store requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) {
    if (granted == YES) {
        //keys with fetching properties
        NSArray *keys = @[CNContactFamilyNameKey, CNContactGivenNameKey, CNContactPhoneNumbersKey, CNContactImageDataKey];
        NSString *containerId = store.defaultContainerIdentifier;
        NSPredicate *predicate = [CNContact predicateForContactsInContainerWithIdentifier:containerId];
        NSError *error;
        NSArray *cnContacts = [store unifiedContactsMatchingPredicate:predicate keysToFetch:keys error:&error];
        if (error) {
            NSLog(@"error fetching contacts %@", error);
        } else {
            NSString *phone;
            NSString *fullName;
            NSString *firstName;
            NSString *lastName;
            UIImage *profileImage;
            NSMutableArray *contactNumbersArray = [[NSMutableArray alloc]init];
            for (CNContact *contact in cnContacts)
            {
                // copy data to my custom Contacts class.
                firstName = contact.givenName;
                lastName = contact.familyName;
                if (lastName == nil) {
                    fullName=[NSString stringWithFormat:@"%@",firstName];
                }else if (firstName == nil){
                    fullName=[NSString stringWithFormat:@"%@",lastName];
                }
                else{
                    fullName=[NSString stringWithFormat:@"%@ %@",firstName,lastName];
                }
                UIImage *image = [UIImage imageWithData:contact.imageData];
                if (image != nil) {
                    profileImage = image;
                }else{
                    profileImage = [UIImage imageNamed:@"person-icon.png"];
                }
                for (CNLabeledValue *label in contact.phoneNumbers)
                {
                    phone = [label.value stringValue];
                    if ([phone length] > 0) {
                        [contactNumbersArray addObject:phone];
                    }
                }
                NSDictionary* personDict = [[NSDictionary alloc] initWithObjectsAndKeys: fullName,@"fullName",profileImage,@"userImage",phone,@"PhoneNumbers", nil];
                [arrayTableData addObject:[NSString stringWithFormat:@"%@",[personDict objectForKey:@"fullName"]]];
                [arraySearchContactData addObject:[NSString stringWithFormat:@"%@",[personDict objectForKey:@"fullName"]]];
                NSLog(@"The contactsArray are - %@",arrayTableData);
            }
            dispatch_async(dispatch_get_main_queue(), ^{
                [tableViewContactData reloadData];
            });
        }
    }
}];
}

- (void)didReceiveMemoryWarning
{
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}


#pragma mark - UITableView Data Source Methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
  return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  return  arrayTableData.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   static  NSString *strCell = @"cell";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:strCell];
   if(cell==nil)
   {
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:strCell];
   }
   cell.textLabel.text = arrayTableData[indexPath.row];
   return cell;
}

#pragma mark - SearchBar Delegate Methods

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
  @try
  {
    [arrayTableData removeAllObjects];
    stringSearch = @"YES";
    NSString *name = @"";
    if ([searchText length] > 0)
    {
        for (int i = 0; i < [arraySearchContactData count] ; i++)
        {
            name = [arraySearchContactData objectAtIndex:i];
            if (name.length >= searchText.length)
            {
                NSRange titleResultsRange = [name rangeOfString:searchText options:NSCaseInsensitiveSearch];
                if (titleResultsRange.length > 0)
                {
                    [arrayTableData addObject:[arraySearchContactData objectAtIndex:i]];
                }
            }
        }
    }
    else
    {
        [arrayTableData addObjectsFromArray:arraySearchContactData];
    }
    [tableViewContactData reloadData];
}
@catch (NSException *exception) {
}
}

- (void)searchBarTextDidBeginEditing:(UISearchBar *)SearchBar
{
  SearchBar.showsCancelButton=YES;
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)theSearchBar
{
  [theSearchBar resignFirstResponder];
}

- (void)searchBarCancelButtonClicked:(UISearchBar *)SearchBar
{
  @try
  {
    SearchBar.showsCancelButton=NO;
    [SearchBar resignFirstResponder];
    [tableViewContactData reloadData];
  }
  @catch (NSException *exception) {
  }
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)SearchBar
{
  [SearchBar resignFirstResponder];
}

@end

联系人的打印结果

The contactsArray are - (
"John Appleseed",
"Kate Bell",
"Anna Haro",
"Daniel Higgins",
"David Taylor",
"Hank Zakroff"
)