在iOS中使用自定義鍵盤的問題

Question

我從下載了一個樣本項目這個鏈接，使用自定義鍵盤。

它運作完美。

但是，當我在項目中使用它時，它返回錯誤-[UIView playKeyboardClick]: unrecognized selector sent to instance 0x71d6390

我做了什么-

我為NerdKeyboardView.h和NerdKeyboardView.m添加了新的viewcontoller文件NerdKeyboard.h和NerdKeyboard.m和UIView文件。 我從示例項目中粘貼了相同的代碼，並在xib中進行了相同的設計。

但是，當我單擊NerdKeyboard.xib文件中的按鈕時，它將返回錯誤

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView playKeyboardClick]: unrecognized selector sent to instance 0x71d6390' *** First throw call stack: (0x1c92012 0x10cfe7e 0x1d1d4bd 0x1c81bbc 0x1c8194e 0x2769 0x10e3705 0x172c0 0x17258 0xd8021 0xd857f 0xd76e8 0x46cef 0x46f02 0x24d4a 0x16698 0x1beddf9 0x1bedad0 0x1c07bf5 0x1c07962 0x1c38bb6 0x1c37f44 0x1c37e1b 0x1bec7e3 0x1bec668 0x13ffc 0x1ebd 0x1de5) libc++abi.dylib: terminate called throwing an exception

如果您想查看代碼：

NerdKeyboard.h

#import <UIKit/UIKit.h>

@interface NerdKeyboard : UIViewController

@property (nonatomic, weak) id delegate;

- (IBAction)keyPress:(id)sender;
- (IBAction)doneEditing:(id)sender;

@end

NerdKeyboard.m

#import "NerdKeyboard.h"
#import "NerdKeyboardView.h"

@implementation NerdKeyboard

- (IBAction)keyPress:(id)sender
{
   [(NerdKeyboardView *)self.view playKeyboardClick];

   if (self.delegate && [self.delegate respondsToSelector:@selector(setText:)]) {
       NSString *oldText = [self.delegate text];
       NSString *thisKey = [[(UIButton *)sender titleLabel] text];

       [self.delegate performSelector:@selector(setText:) withObject:[oldText stringByAppendingString:thisKey]];
   } else if (self.delegate && [self.delegate respondsToSelector:@selector(nerdKeyPress:)]) {
       [self.delegate performSelector:@selector(nerdKeyPress:) withObject:[[(UIButton *)sender titleLabel] text]];
   }
}

- (IBAction)doneEditing:(id)sender
{
   if (self.delegate && [self.delegate respondsToSelector:@selector(resignFirstResponder)]) {
       [self.delegate performSelector:@selector(resignFirstResponder)];
   }
}

@end

NerdKeyboardView.h

#import <UIKit/UIKit.h>

@interface NerdKeyboardView : UIView <UIInputViewAudioFeedback>

- (void)playKeyboardClick;

@end 

NerdKeyboardView.m

#import "NerdKeyboardView.h"

@implementation NerdKeyboardView

- (BOOL)enableInputClicksWhenVisible {
    return YES;
}

- (void)playKeyboardClick
{
    [[UIDevice currentDevice] playInputClick];
}

@end

當我調試它時，錯誤將拋出[(NerdKeyboardView *)self.view playKeyboardClick];

可能是什么問題？

任何建議，將不勝感激。

Answer 1

如果連接不正確或操作系統無法找到所定義的函數，則會出現這種錯誤。如果您使用的是xib，請檢查連接是否更正確。否則請檢查函數setText是否正確編寫。也許大小寫或功能名稱有問題。