我创建了一个按钮并为它添加了一个 Action ，但是一旦它被调用，我就得到了这个错误:

-[NSCFDictionary numberButtonClick:]: unrecognized selector sent to instance
 0x3d03ac0 2010-03-16 22:23:58.811
 Money[8056:207] *** Terminating app
 due to uncaught exception
 'NSInvalidArgumentException', reason:'*** -[NSCFDictionary numberButtonClick:]:  unrecognized selector sent to instance 0x3d03ac0'

这是我的代码:

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
        UIButton *numberButton = [UIButton buttonWithType:UIButtonTypeCustom];        
        numberButton.frame = CGRectMake(10, 435, 46, 38);
        [numberButton setImage:[UIImage imageNamed:@"one.png"] forState:UIControlStateNormal];
        [numberButton addTarget:self action:@selector(numberButtonClick:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview: numberButton]; 
    }
return self;
}

-(IBAction)numberButtonClick:(id)sender{
    NSLog(@"---");
}

最佳答案

看起来您没有正确管理 View Controller 的内存并且它在某个时候被释放 - 这导致 numberButtonClicked: 方法被发送到另一个正在占用内存的对象 View Controller 之前占用...

确保您正确地保留/释放您的 View Controller 。

关于objective-c - Objective-C 中的 "unrecognized selector sent to instance"错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/2455161/