ios - 设置按钮标题时给出警告 uibutton 可能无法响应 -settitle

Question

尝试将文本设置为按钮时收到警告 UIButton 可能无法响应 -'settitle'。

对于下面的代码行。

[firstButton setTitle:[buttonArray objectAtIndex:0]];

[secondbutton setTitle:[buttonArray objectAtIndex:i+index]];

Answer 1

尝试：

[firstButton setTitle:[buttonArray objectAtIndex:0] forState:UIControlStateNormal];

[secondbutton setTitle:[buttonArray objectAtIndex:i+index] forState:UIControlStateNormal];

Answer 2

整个方法签名是 – setTitle:forState:

forState: 是方法名的一部分，不是可选参数。