无法识别的选择器发送到实例0x8c9a6d0 [英] unrecognized selector sent to instance 0x8c9a6d0

问题描述

任何人都可以告诉我此错误代码中发生了什么

Can anyone tell me what is going on in this error code

[UIViewController collectionView:numberOfItemsInSection:]: unrecognized selector sent to instance 0x8c9a6d0

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIViewController collectionView:numberOfItemsInSection:]: unrecognized selector sent to instance 0x8c9a6d0'

收藏夹查看代码为

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {     
    return [array count];
}

我做错了什么

推荐答案

好吧，看来您没有将正确的实例设置为数据源.

well, seems you don't set the right instance as datasource.

运行时试图在UIViewController上调用该方法.这是错误的，因为那不是正确的课程.

the runtime is trying to call the method on a UIViewController. That is wrong as that cannot be the right class.

我的猜测是您尚未在xib中设置视图控制器的类，因此使用了默认的UIViewController

my guess is that you haven't set your view controller's class in the xib and therefore a default UIViewController is used

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