2017-07-04 16_40_08.gif

主界面代码：

#import "ViewController.h"
#import "CountryCodeViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UILabel *label;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super  viewDidLoad];
    UILabel *codeLabel = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 50, 25)];
    self.label = codeLabel;
    codeLabel.font = [UIFont systemFontOfSize:17];
    codeLabel.textColor = [UIColor colorWithRed:0 green:255 blue:127 alpha:0.7];
    codeLabel.text = @"+86";
    [self.view addSubview:codeLabel];
    UIButton *codeBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    codeBtn.frame = CGRectMake(100, 100, 50, 25);
    [codeBtn addTarget:self action:@selector(chooseCountryCode) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:codeBtn];
}
-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:YES animated:animated];
}
-(void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:animated];
}
- (void)chooseCountryCode{
    CountryCodeViewController *CCVC = [[CountryCodeViewController alloc] init];
    CCVC.selectBlock = ^(NSDictionary *dic) {
    self.label.text = [NSString stringWithFormat:@"+%@",dic[@"country_code"]];
    };
    [self.navigationController pushViewController:CCVC animated:YES];
}
@end

cell代码

#import <UIKit/UIKit.h>
@interface CountryCodeCell : UITableViewCell
@property(nonatomic,strong)UILabel* CountryLable;
@property(nonatomic,strong)UILabel* CodeLable;
@property(nonatomic,strong)NSDictionary* CountryDic;
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier;
@end

#import "CountryCodeCell.h"
@implementation CountryCodeCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        _CountryLable = [[UILabel alloc] initWithFrame:CGRectMake(10, 5, 100, 
self.contentView.bounds.size.height)];
    _CountryLable.font = [UIFont systemFontOfSize:15];
    [self.contentView addSubview:_CountryLable];
    _CodeLable = [[UILabel alloc] initWithFrame:CGRectMake(self.contentView.bounds.size.width-20, 5, 50, self.contentView.bounds.size.height)];
    _CodeLable.font = [UIFont systemFontOfSize:15];
    [self.contentView addSubview:_CodeLable];
}
    return self;
}
-(void)setCountryDic:(NSDictionary *)CountryDic{
    _CountryDic = CountryDic;
    self.CountryLable.text = _CountryDic[@"country"];
    self.CodeLable.text = [NSString stringWithFormat:@"+%@",_CountryDic[@"country_code"]];   
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    // Configure the view for the selected state
}
@end

TableView数据源格式

image.png

选择界面TableView代码

#import <UIKit/UIKit.h>
@interface CountryCodeViewController : UIViewController
@property (copy,nonatomic) void (^selectBlock)(NSDictionary*);
@end


#define kScreen_Width [UIScreen mainScreen].bounds.size.width
#import "CountryCodeViewController.h"
#import "CountryCodeCell.h"

@interface CountryCodeViewController ()<UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate>
@property(nonatomic,strong)UITableView *tableView;
@property(nonatomic,strong)UISearchBar *searchBar;
@property (strong, nonatomic) NSDictionary *countryCodeListDict, *searchResults;
@property (strong, nonatomic) NSMutableArray *indexList;
@end

@implementation CountryCodeViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.title = @"选择国家或地区";
_tableView = ({
    UITableView *tableview = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
    tableview.delegate = self;
    tableview.dataSource = self;
    [tableview registerClass:[CountryCodeCell class] forCellReuseIdentifier:@"codeCell"];
    [self.view  addSubview:tableview];
    tableview;
});
_searchBar = ({
    UISearchBar *searchbar = [UISearchBar new];
    searchbar.delegate = self;
    searchbar.placeholder = @"国家/地区名称";
    [searchbar sizeToFit];
    searchbar;
});
self.tableView.tableHeaderView = _searchBar;
[self initData];
}

- (void)initData{
  NSString *path = [[NSBundle mainBundle] pathForResource:@"country" ofType:@"plist"];
  self.countryCodeListDict = self.searchResults = [NSDictionary dictionaryWithContentsOfFile:path];
  [self initIndexList];
}
- (void)initIndexList{
self.indexList = [self.searchResults.allKeys mutableCopy];

[_indexList sortUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
    if ([obj1 isEqualToString:@"#"]) {
        return NSOrderedAscending;
    }else if([obj2 isEqualToString:@"#"]){
        return NSOrderedDescending;
    }else{
        return [obj1 compare:obj2];
    }
}];
[_indexList insertObject:UITableViewIndexSearch atIndex:0];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - tableview delegate
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
  return self.indexList.count -1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
  return [self.searchResults[self.indexList[section+1]] count];
}
-(NSArray<NSString *> *)sectionIndexTitlesForTableView:(UITableView *)tableView{
  return self.indexList;
}

-(NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index{
  return index >0? index-1: index;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
  return 20;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
UIView *headView = [UIView new];
headView.backgroundColor = [UIColor colorWithRed:240/255.0 green:255/255.0 blue:255/255.0 alpha:1];
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 5, 40, 10)];
titleLabel.font = [UIFont systemFontOfSize:12];
titleLabel.text = [self.indexList[section+1] isEqualToString:@"#"]? @"常用": self.indexList[section+1];
[headView addSubview:titleLabel];
return headView;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
CountryCodeCell *cell = [tableView dequeueReusableCellWithIdentifier:@"codeCell" forIndexPath:indexPath];
cell.CountryDic = self.searchResults[self.indexList[indexPath.section+1]][indexPath.row];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
if (_selectBlock) {
    _selectBlock(_searchResults[_indexList[indexPath.section+ 1]][indexPath.row]);
}
[self.navigationController popViewControllerAnimated:YES];
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
cell.separatorInset = UIEdgeInsetsMake(0, 15, 0, (kScreen_Width - cell.contentView.bounds.size.width) + 15);
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
if (scrollView == self.tableView) {
    [self.searchBar resignFirstResponder];
}
}

#pragma mark - searchBar delegate

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
NSMutableDictionary *searchResults = @{}.mutableCopy;
NSString *strippedStr = [searchText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSArray *searchItems = [strippedStr componentsSeparatedByString:@" "];
if (strippedStr.length==0) {
    searchResults = self.countryCodeListDict.mutableCopy;
}else{
    NSMutableArray *andMatchPredicates = [NSMutableArray new];
    for (NSString *searchString in searchItems) {
        NSMutableArray *searchItemsPredicate = [NSMutableArray new];
        NSExpression *lex = [NSExpression expressionForKeyPath:@"country"];
        NSExpression *rex = [NSExpression expressionForConstantValue:searchString];
        NSPredicate *finalPredicate = [NSComparisonPredicate predicateWithLeftExpression:lex rightExpression:rex modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption];
        [searchItemsPredicate addObject:finalPredicate];
        
        lex = [NSExpression expressionForKeyPath:@"country_code"];
        rex = [NSExpression expressionForConstantValue:searchString];
        finalPredicate = [NSComparisonPredicate predicateWithLeftExpression:lex rightExpression:rex modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption];
        [searchItemsPredicate addObject:finalPredicate];
        
        lex = [NSExpression expressionForKeyPath:@"iso_code"];
        rex = [NSExpression expressionForConstantValue:searchString];
        finalPredicate = [NSComparisonPredicate predicateWithLeftExpression:lex rightExpression:rex modifier:NSDirectPredicateModifier type:NSContainsPredicateOperatorType options:NSCaseInsensitivePredicateOption];
        [searchItemsPredicate addObject:finalPredicate];
        
        NSCompoundPredicate *orMatchPredicate = [NSCompoundPredicate orPredicateWithSubpredicates:searchItemsPredicate];
        [andMatchPredicates addObject:orMatchPredicate];
    }
    NSCompoundPredicate *finalCompoundPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:andMatchPredicates];
    for (NSString *key in [self.countryCodeListDict allKeys]) {
        NSArray *finalList = [self.countryCodeListDict[key] filteredArrayUsingPredicate:finalCompoundPredicate];
        if (finalList.count>0) {
            [searchResults setValue:finalList forKey:key];
        }else{
            [searchResults removeObjectForKey:key];
        }
    }
    self.searchResults = searchResults;
    [self initIndexList];
    [self.tableView reloadData];
} 
}
@end