#import <UIKit/UIKit.h>

//自定义键盘的键定义

@interface DIYKey : NSObject

{

}

@property(copy, nonatomic) NSString* name;

@property(copy, nonatomic) NSString* representedString;

@property(copy, nonatomic) NSString* displayString;

@property(copy, nonatomic) NSString* displayType;

@property(copy, nonatomic) NSString* interactionType;

@property(copy, nonatomic) NSString* variantType;

@property(assign, nonatomic) BOOL visible;

@property(assign, nonatomic) unsigned displayTypeHint;

@property(retain, nonatomic) NSString* displayRowHint;

@property(copy, nonatomic) NSArray* variantKeys;

@property(copy, nonatomic) NSString* overrideDisplayString;

@property(assign, nonatomic) BOOL disabled;

@property(assign, nonatomic) BOOL hidden;

@end

////自定义键盘的视图

@interface DIYKeyView : UIView

{

}

@property(readonly, assign, nonatomic) DIYKey* key;

@end

@protocol MJTextFieldDelegate;

@interface MJTextField : UITextField

@property(nonatomic,assign)id<MJTextFieldDelegate>  MjDelegate;

@property(nonatomic,retain) UIButton* sureButton;

-(DIYKeyView *)FindView:(NSString *)name;

-(void )addCustormButton:(NSString *)name title:(NSString *)title target:(id)target action:(SEL)action;

-(void)delCustormButton;

-(void )modifyKeyView:(NSString *)name display:(NSString *)display represent:(NSString *)represent interaction:(NSString *)type;

@end

@protocol MJTextFieldDelegate <NSObject>

-(void)keyBoardShow:(MJTextField *)textField;

-(void)keyboardHide:(MJTextField *)textField;

@end

#import "MJTextField.h"

@implementation MJTextField

- (id)initWithFrame:(CGRect)frame

{

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code

    }

    return self;

}

-(BOOL)resignFirstResponder{

    BOOL ret=[super resignFirstResponder];

    if(self.MjDelegate){

        [self.MjDelegate keyboardHide:self];

    }

    return ret;

}

-(BOOL)becomeFirstResponder{

    BOOL ret=[super becomeFirstResponder];

    if(self.MjDelegate){

        [self.MjDelegate keyBoardShow:self];

    }

    return ret;

}

#pragma mark -find view

-(DIYKeyView *)FindKeyView:(NSString *)name inView:(UIView *)view{

    for (DIYKeyView *subview in view.subviews)

    {

        NSString *className = NSStringFromClass([subview class]);

        if ([className isEqualToString:@"UIKBKeyView"])

        {

            NSLog(@"name-->%@",subview.key.name);

            if((name==nil)||[subview.key.name isEqualToString:name])

                return subview;

        }

        else

        {

            DIYKeyView *subview2 = [self FindKeyView:name inView:subview];

            if (subview2!=nil) {

                return subview2;

            }

        }

    }

    return nil;

}

-(DIYKeyView *)FindView:(NSString *)name{

       UIWindow* window = [[[UIApplication sharedApplication] windows] objectAtIndex:];

    return [self FindKeyView:name inView:window];

}

//添加键

-(void )addCustormButton:(NSString *)name title:(NSString *)title target:(id)target action:(SEL)action{

    //先找到指定的键盘

    DIYKeyView *view=[self FindView:name];

    if(view){

        self.sureButton=[[UIButton alloc] initWithFrame:view.frame];

        self.sureButton.titleLabel.font=[UIFont boldSystemFontOfSize:];

        [self.sureButton setTitle:title forState:UIControlStateNormal];

        [self.sureButton setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal];

        [self.sureButton setTitleColor:[UIColor blackColor] forState:UIControlStateHighlighted];

        [self.sureButton addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];

        self.sureButton.showsTouchWhenHighlighted=YES;

        [view.superview addSubview:self.sureButton];

    }

}

//删除键

-(void)delCustormButton{

    if(self.sureButton){

        [self.sureButton removeFromSuperview];

        self.sureButton=nil;

    }

}

//修改键盘

-(void )modifyKeyView:(NSString *)name display:(NSString *)display represent:(NSString *)represent interaction:(NSString *)type{

    DIYKeyView *view=[self FindView:name];

    if(view){

        view.key.displayString=display;//键盘显示的内容

        view.key.representedString=represent;//点击键盘，输入的内容

        if(type){

        view.key.displayType=type;

        }

  [view setNeedsDisplay];

    }

}

@end

#import <UIKit/UIKit.h>

#import "MJTextField.h"

@interface ViewController : UIViewController<MJTextFieldDelegate>

- (IBAction)click:(id)sender;

@property (retain, nonatomic) IBOutlet UITextField *text;

@end

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

#pragma mark -生命周期方法

- (void)viewDidLoad

{

    [super viewDidLoad];

    MJTextField *mj=[[MJTextField alloc] initWithFrame:CGRectMake(, , , )];

    mj.borderStyle=UITextBorderStyleRoundedRect;

    mj.keyboardType=UIKeyboardTypeNumberPad;

    mj.tag=;

    mj.MjDelegate=self;

    [self.view addSubview:mj];

    [mj release];

    MJTextField *mj1=[[MJTextField alloc] initWithFrame:CGRectMake(, , , )];

    mj1.borderStyle=UITextBorderStyleRoundedRect;

    mj1.keyboardType=UIKeyboardTypeDefault;

    mj1.MjDelegate=self;

    mj1.tag=;

    mj1.returnKeyType=UIReturnKeyDone;

    [self.view addSubview:mj1];

    [mj1 release];

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

-(void)keyBoardShow:(MJTextField *)textField{

    // Let's crazy!

    if(==textField.tag){

        [textField modifyKeyView:@"NumberPad-1" display:@"x" represent:@"aa" interaction:nil];

    }

}

-(void)keyboardHide:(MJTextField *)textField{

    [textField delCustormButton];

}

- (void)dealloc

{

    [super dealloc];

}

-(void)myclick:(id)sender{

    NSLog(@"aa");

}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

    [self.view endEditing:YES];

}

@end