登陆界面 键盘工具栏的xib创建

 

//
//  LXKeyboardTool.h
//  注册界面
//
//  Created by 刘羽 on 16/1/5.
//  Copyright © 2016年 LX. All rights reserved.
//

#import <UIKit/UIKit.h>

typedef enum{
    keyboardItemTypeNext,
    keyboardItemTypePrevious,
    keyboardItemTypeDone
    
}keyboardItemType;

@class LXKeyboardTool;

@protocol LXKeyboardToolDelegate<NSObject>

-(void)keyboardTool:(LXKeyboardTool *)keyboardTool didClickItemType:(keyboardItemType)itemType;

@end

@interface LXKeyboardTool : UIView
//添加代理
@property(nonatomic,weak)id<LXKeyboardToolDelegate>delegata;
+(instancetype)keyboardTool;

@end

//
//  LXKeyboardTool.m
//  注册界面
//
//  Created by 刘羽 on 16/1/5.
//  Copyright © 2016年 LX. All rights reserved.
//

#import "LXKeyboardTool.h"
@interface LXKeyboardTool()

- (IBAction)previous:(id)sender;

- (IBAction)next:(id)sender;
- (IBAction)done:(id)sender;

@end

@implementation LXKeyboardTool

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

+(instancetype)keyboardTool
{
    return [[[NSBundle mainBundle] loadNibNamed:@"LXKeyboardTool" owner:nil options:nil] lastObject];
}

-(void)previous:(id)sender
{//判断代理有没有实现相应的方法
    if ([self.delegata respondsToSelector:@selector(keyboardTool:didClickItemType:)]) {
        [self.delegata keyboardTool:self didClickItemType:keyboardItemTypePrevious];
    }
}
-(void)next:(id)sender
{
    if ([self.delegata respondsToSelector:@selector(keyboardTool:didClickItemType:)]) {
        [self.delegata keyboardTool:self didClickItemType:keyboardItemTypeNext];
    }
}
-(void)done:(id)sender
{
    if ([self.delegata respondsToSelector:@selector(keyboardTool:didClickItemType:)]) {
        [self.delegata keyboardTool:self didClickItemType:keyboardItemTypeDone];
    }
}

@end

//
//  ViewController.m
//  注册界面
//
//  Created by 刘羽 on 16/1/5.
//  Copyright © 2016年 LX. All rights reserved.
//

#import "ViewController.h"
#import "LXKeyboardTool.h"

@interface ViewController ()<LXKeyboardToolDelegate>{
    NSArray *_fileds;//存储所有的textFields

}


@property (weak, nonatomic) IBOutlet UIView *inputContainer;

@property (weak, nonatomic) IBOutlet UITextField *birthdayField;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    //1.初始化自定义键盘
    [self setupCustomKeyboard];
    //2.设置每一个textFiled键盘工具view（inputAccessoryView）
    [self setupKeyboardTool];
    //3监听键盘的事件
    [self setupKeyboardNotification];
}

//1初始化自定义键盘
-(void)setupCustomKeyboard
{
    UIDatePicker *datePicker = [[UIDatePicker alloc]init];
    datePicker.locale = [NSLocale localeWithLocaleIdentifier:@"zh"];
    datePicker.datePickerMode = UIDatePickerModeDate;
    
    self.birthdayField.inputView = datePicker;
}

 //2.设置每一个textFiled键盘工具view（inputAccessoryView）
-(void)setupKeyboardTool
{   //创建工具栏
    LXKeyboardTool *tool = [LXKeyboardTool keyboardTool];
    //设置代理
    tool.delegata = self;
    //1、获取所有输入框窗口的所有子控件
    NSArray *views = self.inputContainer.subviews;
    //2、创建一个可变数组
    NSMutableArray *arrayM = [NSMutableArray array];
    //3、如果子控件是UITextView 则设置inputAccessView
    for (UIView *child in views) {
        if ([child isKindOfClass:[UITextField class]]) {
            UITextField *uf = (UITextField *)child;
            uf.inputAccessoryView = tool;
            [arrayM addObject:uf];
        }
    }
    _fileds = arrayM;
}

-(void)dealloc
{   //移除监听
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

//监听键盘的事件
-(void)setupKeyboardNotification
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(kbFrameChange:) name:UIKeyboardWillChangeFrameNotification object:nil];
}
//键盘frame的变化
-(void)kbFrameChange:(NSNotification *)notification
{
    //获取键盘改变时的frame,并转换成CGrect类型
    CGRect kbEndFrame = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    //获取键盘改变时的y值
    CGFloat kbEndY = kbEndFrame.origin.y;
    
    //获取当前的响应者
    int currentIndex = [self getCurrenResponderIndex];
    UITextField *tf = _fileds[currentIndex];
    CGFloat tfMaxY = CGRectGetMaxY(tf.frame) + self.inputContainer.frame.origin.y;
    //改变控制器view的transform
    //如果textField的最大y值大于键盘的y值，才往上移动
    if (tfMaxY > kbEndY) {
        [UIView animateWithDuration:0.25 animations:^{
            self.view.transform = CGAffineTransformMakeTranslation(0, tfMaxY - kbEndY);
        }];
    }else
    {
        [UIView animateWithDuration:0.25 animations:^{
            self.view.transform = CGAffineTransformIdentity;
        }];
    }
}



#pragma mark 键盘工具条的代理
-(void)keyboardTool:(LXKeyboardTool *)keyboardTool didClickItemType:(keyboardItemType)itemType
{   //  获取当前响应者的索引
    int currentIndex = [self getCurrenResponderIndex];
    switch (itemType) {
        case keyboardItemTypePrevious:
            [self showPreviousField:currentIndex];
            break;
            
        case keyboardItemTypeNext :
            [self showNextField:currentIndex];
            break;
        case keyboardItemTypeDone:
            [self touchesBegan:nil withEvent:nil];
    }
    
    
}

//获取当前textField响应者的索引
-(int)getCurrenResponderIndex
{
    for (UITextField *tf in _fileds) {
        if (tf.isFirstResponder) {//如果是第一响应者
            return [_fileds indexOfObject:tf];
        }
    }
    return -1;//没有找到就返回-1
}

//让上一个FiledText成为响应者
-(void)showPreviousField:(int)currentIndex
{   int previousIndex = currentIndex - 1;
    if (previousIndex > -1) {
        UITextField *preTextField = [_fileds objectAtIndex:previousIndex];
        [preTextField becomeFirstResponder];
    }
    
}
//让下一个成为响应者
-(void)showNextField:(int)currentIndex
{   int NextIndex = currentIndex + 1;
    if (NextIndex < _fileds.count) {
        UITextField *nextTextField = [_fileds objectAtIndex:NextIndex];
        [nextTextField becomeFirstResponder];
    }
       
}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
    [UIView animateWithDuration:0.25 animations:^{
        self.view.transform = CGAffineTransformIdentity;
    }];
}

@end