iOS textField弹出自定义键盘（日期时间、省市、国家）

弹出选择国家效果图

弹出日期时间效果图

弹出省市效果图

1.选择国家（核心代码）
1.1自定义CountryTF继承自UITextField
CountryTF.h

//
//  CountryTF.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface CountryTF : UITextField

- (void)initWithText;
@end

CountryTF.m

//
//  CountryTF.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "CountryTF.h"
#import "CountryView.h"
#import "CountryModel.h"

@interface CountryTF ()<UIPickerViewDelegate, UIPickerViewDataSource>

@property (nonatomic, strong) NSArray *dataArr;
@property (nonatomic, weak) UIPickerView *pick;
@end
@implementation CountryTF

- (void)awakeFromNib
{
    [super awakeFromNib];
    [self setUp];
}

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self setUp];
    }
    return self;
}

- (NSArray *)dataArr
{
    if (_dataArr == nil) {

        NSString *path = [[NSBundle mainBundle] pathForResource:@"flags.plist" ofType:nil];
        _dataArr = [NSArray arrayWithContentsOfFile:path];

        NSMutableArray *arrM = [NSMutableArray array];

        for (NSDictionary *dict in _dataArr) {
            CountryModel *countryMode = [CountryModel countryWithDict:dict];
            [arrM addObject:countryMode];
        }
        _dataArr = arrM;
    }

    return _dataArr;
}
// 创始化textField
- (void)setUp
{
    UIPickerView *pickView = [[UIPickerView alloc] init];
    pickView.delegate = self;
    pickView.dataSource = self;

    self.inputView = pickView;
    self.pick = pickView;
}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
    return 1;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
    return self.dataArr.count;
}

- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
    return 75;
}

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{
    CountryView *countryView = [CountryView countryView];
    countryView.model = self.dataArr[row];
    return countryView;
}

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    CountryModel *model = self.dataArr[row];
    self.text = model.name;
}

- (void)initWithText
{
    [self pickerView:self.pick didSelectRow:0 inComponent:0];
}
@end

1.2自定义CountryView继承UIView(用的XIB， 也可以代码创建)
CountryView.h

//
//  CountryView.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <UIKit/UIKit.h>

@class CountryModel;
@interface CountryView : UIView

@property (nonatomic, strong) CountryModel *model;
+ (instancetype)countryView;

@end

CountryView.m

//
//  CountryView.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "CountryView.h"
#import "CountryModel.h"

@interface CountryView ()

@property (weak, nonatomic) IBOutlet UILabel *nameLb;
@property (weak, nonatomic) IBOutlet UIImageView *iconImgView;
@end
@implementation CountryView

+ (instancetype)countryView
{
    return [[NSBundle mainBundle] loadNibNamed:NSStringFromClass([self class]) owner:nil options:nil].lastObject;
}

- (void)setModel:(CountryModel *)model
{
    _model = model;

    self.nameLb.text = model.name;
    self.iconImgView.image = [UIImage imageNamed:model.icon];
}
@end

1.3 数据模型文件

//
//  CountryModel.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface CountryModel : NSObject

@property (nonatomic, copy) NSString *name;
@property (nonatomic, copy) NSString *icon;

+ (instancetype)countryWithDict:(NSDictionary *)dict;
@end

//
//  CountryModel.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "CountryModel.h"

@implementation CountryModel

+ (instancetype)countryWithDict:(NSDictionary *)dict
{
    return [[self alloc] initWithDict:dict];
}

- (instancetype)initWithDict:(NSDictionary *)dict
{
    if (self = [super init]) {

        self.name = dict[@"name"];
        self.icon = dict[@"icon"];
    }
    return self;
}
@end

1.选择日期（核心代码）
1.1自定义DateTF继承自UITextField
DateTF.h

//
//  DateTF.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface DateTF : UITextField
- (void)initWithText;
@end

DateTF.m

//
//  DateTF.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "DateTF.h"

@interface DateTF ()

@property (nonatomic, weak) UIDatePicker *pick;
@end
@implementation DateTF

- (void)awakeFromNib
{
    [super awakeFromNib];
    [self setUp];
}

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self setUp];
    }
    return self;
}
//初始化
- (void)setUp
{
    UIDatePicker *datePick = [[UIDatePicker alloc] init];
    //修改datePick日期模式
    datePick.datePickerMode = UIDatePickerModeDate;
    datePick.locale = [NSLocale localeWithLocaleIdentifier:@"zh"];
    //监听日期改变
    [datePick addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];
    //日期键盘
    self.inputView = datePick;
    self.pick = datePick;

}
//当日期改变的时候会调用
- (void)dateChange:(UIDatePicker *)datePick
{
    //把当前的日期给文本框赋值
    //获取当前选中的日期
    NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
    [fmt setDateFormat:@"yyy-MM-dd"];
    //把当前日期转成字符串
    self.text = [fmt stringFromDate:datePick.date];
}

- (void)initWithText
{
    [self dateChange:self.pick];
}
@end

1.选择省市（核心代码）
1.1自定义CityTF继承自UITextField
CityTF.h

//
//  CityTF.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface CityTF : UITextField

- (void)initWithText;
@end

CityTF.m

//
//  CityTF.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "CityTF.h"
#import "CityModel.h"

@interface CityTF ()<UIPickerViewDelegate, UIPickerViewDataSource>

@property (nonatomic, strong) NSArray *dataArr;

/** 当前选中省份的角标 */
@property (nonatomic, assign) NSInteger proIndex;

@property (nonatomic, weak) UIPickerView *pick;

@end

@implementation CityTF

- (void)awakeFromNib
{
    [super awakeFromNib];
    //初始化
    [self setUp];
}

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        //初始化
        [self setUp];
    }
    return self;
}

- (NSArray *)dataArr
{
    if (_dataArr ==nil) {

        NSString *path = [[NSBundle mainBundle] pathForResource:@"provinces.plist" ofType:nil];
        _dataArr = [NSArray arrayWithContentsOfFile:path];

        NSMutableArray *arrM = [NSMutableArray array];
        for (NSDictionary *dict in _dataArr) {
            CityModel *model = [CityModel cityWithDict:dict];
            [arrM addObject:model];
        }
        _dataArr = arrM;
    }
    return _dataArr;
}
- (void)setUp
{
    UIPickerView *pick = [[UIPickerView alloc] init];
    pick.delegate = self;
    pick.dataSource = self;

    self.inputView = pick;
    self.pick = pick;
}

//总共有多少列
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
    return 2;
}
//每一列有多少行
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
    if (component == 0) {
        return self.dataArr.count;
    } else {
        //当前选中的省份决定,当前选中省份下有多少个城市
        //当前选中的省份模型,返回当前选中的省份下的城市数量
        CityModel *model = self.dataArr[self.proIndex];
        return model.cities.count;
    }
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    if (component == 0) {
        CityModel *model = self.dataArr[row];
        return model.name;
    } else {
        CityModel *model = self.dataArr[self.proIndex];
        return model.cities[row];
    }
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    if (component == 0) {

        self.proIndex = row;
        //第1列选中第0行
        [pickerView selectRow:0 inComponent:1 animated:YES];
        //刷新数据
        [pickerView reloadAllComponents];
    }

    // 取出省份
    CityModel *model = self.dataArr[self.proIndex];
    NSString *provinceName = model.name;

    // 取出省份对应的城市
    // 获取第一列选中的行
    NSInteger cityRow = [pickerView selectedRowInComponent:1];
    NSString *cityName = model.cities[cityRow];
    self.text = [NSString stringWithFormat:@"%@-%@", provinceName, cityName];
}

- (void)initWithText
{
    [self pickerView:self.pick didSelectRow:0 inComponent:0];
}
@end

1.2 数据模型文件

//
//  CityModel.h
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface CityModel : NSObject

@property (nonatomic, strong) NSArray *cities;
@property (nonatomic, copy) NSString *name;

+(instancetype)cityWithDict:(NSDictionary *)dict;

@end

//
//  CityModel.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/31.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "CityModel.h"

@implementation CityModel

+ (instancetype)cityWithDict:(NSDictionary *)dict
{
    CityModel *model = [[CityModel alloc] init];

    [model setValuesForKeysWithDictionary:dict];

    return model;
}

@end

如何使用（Main.storyboard 拖几个控件，注意绑定对应的类）

//
//  ViewController.m
//  LayneCheungDemo
//
//  Created by llkj on 2017/7/28.
//  Copyright © 2017年 LayneCheung. All rights reserved.
//

#import "ViewController.h"
#import "CityTF.h"
@interface ViewController ()<UITextFieldDelegate>

@property (weak, nonatomic) IBOutlet UITextField *countryTF;
@property (weak, nonatomic) IBOutlet UITextField *dateTF;
@property (weak, nonatomic) IBOutlet UITextField *cityTF;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.countryTF.delegate = self;
    self.dateTF.delegate = self;
    self.cityTF.delegate = self;

}

- (void)textFieldDidBeginEditing:(CityTF *)textField
{
    //让当前编辑的文本选中第一个.
    //在运行时,会去找它真实类型的方法.(在这里可修改textField的类型，也可以给textField写一个category扩充一个initWithText的方法声明)
    [textField initWithText];
}
// 拦截用户输入
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    return NO;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
}
@end

demo下载地址：http://download.csdn.net/detail/u010981736/9916416