IOS 8.3数字键盘自定义确定按钮

Question

我正在开发一个IOS应用程序。我正在使用iPhone数字键盘的自定义确定按钮。此代码适用于所有IOS版本，但IOS 8.3不工作.OK按钮添加到键盘，但单击事件不起作用。

- (void)updateKeyboardButtonFor:(UITextField *)textField { 

    // Remove any previous button 
    [self.numberPadDoneButton removeFromSuperview]; 
    self.numberPadDoneButton = nil; 

    // Does the text field use a number pad? 
    if (textField==nil || textField.keyboardType != UIKeyboardTypeNumberPad){ 
     return; 
    } 

    // If there's no keyboard yet, don't do anything 
    if ([[[UIApplication sharedApplication] windows] count] < 2) 
     return; 
    UIWindow *keyboardWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1]; 

    // Create new custom button 
    self.numberPadDoneButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
    self.numberPadDoneButton.frame = CGRectMake(0, 163, 106, 53); 
    self.numberPadDoneButton.adjustsImageWhenHighlighted = FALSE; 
    [self.numberPadDoneButton setImage:self.numberPadDoneImageNormal forState:UIControlStateNormal]; 
    [self.numberPadDoneButton setImage:self.numberPadDoneImageHighlighted forState:UIControlStateHighlighted]; 
    [self.numberPadDoneButton addTarget:self action:@selector(numberPadDoneButton:) forControlEvents:UIControlEventTouchUpInside]; 
    /* 
    // Locate keyboard view and add button 
    NSString *keyboardPrefix = [[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2 ? @"<UIPeripheralHost" : @"<UIKeyboard"; 
    for (UIView *subView in keyboardWindow.subviews) { 
     if ([[subView description] hasPrefix:keyboardPrefix]) { 
      [subView addSubview:self.numberPadDoneButton]; 
      [self.numberPadDoneButton addTarget:self action:@selector(numberPadDoneButton:) forControlEvents:UIControlEventTouchUpInside]; 
      break; 
     } 
    } 
    */ 
    UIWindow* tempWindow; 

    UIView* keyboard; 

    for (UIWindow *window in [[UIApplication sharedApplication] windows]) 
    { 
     if ([NSStringFromClass([window class]) isEqualToString:@"UITextEffectsWindow"]) 
     { 
      tempWindow = window; 
      break; 
     } 
    } 

    for(int i = 0 ; i < [tempWindow.subviews count] ; i++) 
    { 
     keyboard = [tempWindow.subviews objectAtIndex:i]; 
     // keyboard found, add the button 

     if([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES){ 
      [keyboard addSubview:self.numberPadDoneButton]; 
     } 
     //This code will work on iOS 8.0 
     else if([[keyboard description] hasPrefix:@"<UIInputSetContainerView"] == YES){ 

      for(int i = 0 ; i < [keyboard.subviews count] ; i++) 
      { 
       UIView* hostkeyboard = [keyboard.subviews objectAtIndex:i]; 

       if([[hostkeyboard description] hasPrefix:@"<UIInputSetHost"] == YES){ 
        [hostkeyboard addSubview:self.numberPadDoneButton]; 
        BOOL isPortrait = UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation); 
        self.numberPadDoneButton.frame = CGRectMake(((isPortrait) ? 0 : -1),((int) (hostkeyboard.frame.size.height*3)/4) + ((isPortrait) ? 0 : 1),(int) hostkeyboard.frame.size.width/3-1, (isPortrait) ? 60 : 40); 
        [self.numberPadDoneButton addTarget:self action:@selector(numberPadDoneButton:) forControlEvents:UIControlEventTouchUpInside]; 
       } 
      } 
     } 
    } 
} 

Answer 1

好吧，我解决这个问题的所有IOS版本还搭载iOS 8.3 FYI

NumpadViewController.h

#import <UIKit/UIKit.h> 


@interface NumberPadViewController : BaseViewController { 
    UIImage *numberPadDoneImageNormal; 
    UIImage *numberPadDoneImageHighlighted; 
    UIButton *numberPadDoneButton; 
} 

@property (nonatomic, retain) UIImage *numberPadDoneImageNormal; 
@property (nonatomic, retain) UIImage *numberPadDoneImageHighlighted; 
@property (nonatomic, retain) UIButton *numberPadDoneButton; 

- (IBAction)numberPadDoneButton:(id)sender; 
- (void)doneButtonClick:(id)sender; 

@end 

NumpadViewController.m

#import "NumpadViewController.h" 

@implementation NumberPadViewController 

@synthesize numberPadDoneImageNormal; 
@synthesize numberPadDoneImageHighlighted; 
@synthesize numberPadDoneButton; 

- (id)initWithNibName:(NSString *)nibName bundle:(NSBundle *)nibBundle { 
    if ((self = [super initWithNibName:nibName bundle:nibBundle]) == nil) { 
     return nil; 
    } 

    if ([Helper isIOS7]) { 
     self.numberPadDoneImageNormal = [UIImage imageNamed:@"DoneDown7.png"]; 
     self.numberPadDoneImageHighlighted = [UIImage imageNamed:@"DoneUp7.png"]; 
    }else{ 
     self.numberPadDoneImageNormal = [UIImage imageNamed:@"DoneUp.png"]; 
     self.numberPadDoneImageHighlighted = [UIImage imageNamed:@"DoneDown.png"]; 
    } 

    return self; 
} 

- (void)viewWillAppear:(BOOL)animated { 
    [super viewWillAppear:animated]; 

    [SVProgressHUD dismiss]; 

    if([Helper isDeviceiPhone]){ 
     // Add listener for keyboard display events 
     if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) { 
      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(keyboardDidShow:) 
                 name:UIKeyboardDidShowNotification 
                 object:nil]; 
      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(keyboardWillHide:) 
                 name:UIKeyboardDidHideNotification 
                 object:nil]; 
     } else { 
      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(keyboardWillShow:) 
                 name:UIKeyboardWillShowNotification 
                 object:nil]; 
      [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil]; 
     } 

     // Add listener for all text fields starting to be edited 
     [[NSNotificationCenter defaultCenter] addObserver:self 
               selector:@selector(textFieldDidBeginEditingHandler:) 
                name:UITextFieldTextDidBeginEditingNotification 
                object:nil]; 

     [[NSNotificationCenter defaultCenter] addObserver:self 
               selector:@selector(textFieldDidEndEditingHandler:) 
                name:UITextFieldTextDidEndEditingNotification 
                object:nil]; 
    } 
} 

- (void)viewWillDisappear:(BOOL)animated { 

    if([Helper isDeviceiPhone]){ 
     if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) { 
      [[NSNotificationCenter defaultCenter] removeObserver:self 
                  name:UIKeyboardDidShowNotification 
                  object:nil]; 
      [[NSNotificationCenter defaultCenter] removeObserver:self 
                  name:UIKeyboardDidHideNotification 
                  object:nil]; 
     } else { 
      [[NSNotificationCenter defaultCenter] removeObserver:self 
                  name:UIKeyboardWillShowNotification 
                  object:nil]; 
      [[NSNotificationCenter defaultCenter] removeObserver:self 
                  name:UIKeyboardWillHideNotification 
                  object:nil]; 
     } 
     [[NSNotificationCenter defaultCenter] removeObserver:self 
                 name:UITextFieldTextDidBeginEditingNotification 
                 object:nil]; 
    } 

    if (self.numberPadDoneButton!=nil) { 
     [self.numberPadDoneButton removeFromSuperview]; 
    } 

    [super viewWillDisappear:animated]; 
} 

- (UIView *)findFirstResponderUnder:(UIView *)root { 
    if (root.isFirstResponder) 
     return root; 
    for (UIView *subView in root.subviews) { 
     UIView *firstResponder = [self findFirstResponderUnder:subView]; 
     if (firstResponder != nil) 
      return firstResponder; 
    } 
    return nil; 
} 

- (UITextField *)findFirstResponderTextField { 
    UIResponder *firstResponder = [self findFirstResponderUnder:[self.view window]]; 
    if (![firstResponder isKindOfClass:[UITextField class]]) 
     return nil; 
    return (UITextField *)firstResponder; 
} 



- (void)textFieldDidBeginEditingHandler:(NSNotification *)note { 
    [self addButtonToKeyboard:[note object]]; 
} 

- (void)textFieldDidEndEditingHandler:(NSNotification *)note { 
    [self removedSearchButtonFromKeypad]; 
} 

- (void)keyboardWillShow:(NSNotification *)note { 
    [self addButtonToKeyboard:[self findFirstResponderTextField]]; 
} 

- (void)keyboardDidShow:(NSNotification *)note { 
    //[self updateKeyboardButtonFor:[self findFirstResponderTextField]]; 
    [self addButtonToKeyboard:[self findFirstResponderTextField]]; 
} 

- (void)keyboardWillHide:(NSNotification*)note { 
    [self removedSearchButtonFromKeypad]; 
} 

- (IBAction)numberPadDoneButton:(id)sender { 
    UITextField *textField = [self findFirstResponderTextField]; 
    [textField resignFirstResponder]; 
    if ([self respondsToSelector:@selector(doneButtonClick:)]) { 
     [self doneButtonClick:textField]; 
    } 
} 

- (void)doneButtonClick:(id)sender{ 

} 

- (void)dealloc { 
    [numberPadDoneImageNormal release]; 
    [numberPadDoneImageHighlighted release]; 
    [numberPadDoneButton release]; 
    [super dealloc]; 
} 

- (void)addButtonToKeyboard:(UITextField *)textField 
{ 

    [self removedSearchButtonFromKeypad]; 

    if (textField==nil || textField.keyboardType != UIKeyboardTypeNumberPad){ 
     return; 
    } 

    // create custom button 
    self.numberPadDoneButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
    //self.numberPadDoneButton.frame = CGRectMake(0, 163+44, 106, 53); 
    self.self.numberPadDoneButton.frame = CGRectMake(0, [[UIScreen mainScreen] bounds].size.height - 53, [[UIScreen mainScreen] bounds].size.width/3, 53); 
    self.numberPadDoneButton.adjustsImageWhenHighlighted = NO; 
    [self.numberPadDoneButton setTag:67123]; 
    [self.numberPadDoneButton setImage:self.numberPadDoneImageNormal forState:UIControlStateNormal]; 
    [self.numberPadDoneButton setImage:self.numberPadDoneImageHighlighted forState:UIControlStateHighlighted]; 

    [self.numberPadDoneButton addTarget:self action:@selector(numberPadDoneButton:) forControlEvents:UIControlEventTouchUpInside]; 

    // locate keyboard view 
    NSInteger windowCount = [[[UIApplication sharedApplication] windows] count]; 
    if (windowCount < 2) { 
     return; 
    } 

    UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1]; 

    UIButton* donebtn = (UIButton*)[tempWindow viewWithTag:67123]; 
    if (donebtn == nil)//to avoid adding again and again as per my requirement (previous and next button on keyboard) 
     [tempWindow addSubview:self.numberPadDoneButton]; 
} 

-(void) removedSearchButtonFromKeypad{ 

    NSInteger windowCount = [[[UIApplication sharedApplication] windows] count]; 
    if (windowCount < 2) { 
     return; 
    } 

    UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1]; 

    for(int i = 0 ; i < [tempWindow.subviews count] ; i++) 
    { 
     UIView* keyboard = [tempWindow.subviews objectAtIndex:i]; 

     [self removeButton:keyboard]; 
    } 
} 


-(void) removeButton:(UIView*)keypadView{ 
    UIButton* donebtn = (UIButton*)[keypadView viewWithTag:67123]; 
    if(donebtn){ 
     [donebtn removeFromSuperview]; 
     donebtn = nil; 
    } 
} 

@end