我已经尝试了下面的代码,但按钮的大小保持不变
UIButton * pInfoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[pInfoButton setFrame:CGRectMake(100,100, 80, 80)];
[pInfoButton setBounds:CGRectMake(0, 0, 80, 80)];
[self.view addSubview:pInfoButton];
请告诉我如何增加它的大小,提前谢谢