通过选择器发送多个参数？

Question

我想使用选择器来访问我的控制器并传递2个值，即发送者和数字。

问题是我得到了崩溃：

  

***由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：' - [CDCFaderController changeView：]：无法识别的选择器发送到实例0x109db6f40'

代码对我有意义，所以不确定为什么，任何人都能帮忙？

[self.viewController performSelector:@selector(changeView:) withObject:self withObject:[NSNumber numberWithInteger: channel.channelNumber]];

接收器：

- (void)changeView:(UIButton *)sender chanToPush:(NSNumber*)channel

Answer 1

选择器错误。 @selector(changeView:)应为@selector(changeView:chanToPush:)。

试试这个。

[self.viewController performSelector:@selector(changeView:chanToPush:) withObject:self withObject:[NSNumber numberWithInteger: channel.channelNumber]];

Answer 2

直接使用

[self performSelector:@selector(changeView:chanToPush:) withObject:self withObject:[NSNumber numberWithInteger: channel.channelNumber]];

- (void)changeView:(UIButton *)sender chanToPush:(NSNumber*)channel
{
    NSLog(@"channel is --%@",channel);
}

或

[self performSelector:@selector(changeView:) withObject:[NSNumber numberWithInteger: channel.channelNumber]];

- (void) changeView:(NSNumber *)num
{ //
}