Objective C - 与指针转换不兼容的整数

Question

我是iOS编程的新手.

我"Incompatible integer to pointer conversion sending 'int' to parameter of type 'NSString *'"尝试运行以下代码时收到错误:

- (IBAction)oneToSix {
    int rNumber = arc4random() % 6;
    [result setImage:[UIImage imageNamed: rNumber]];
}

Answer 1

在将其发送到方法之前,您需要将其转换int为a .这是因为a 作为参数而不是a .试试这个:NSStringimageNamedimageNamedNSStringint

- (IBAction)oneToSix {
    int rNumber = arc4random() % 6;
    [result setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d", rNumber]]];
}