Ios 无法更改按钮图片

我有3个按钮：

*.h:（都是填充圆，这意味着它们是指定的）

*.m:

和代码：

AllButton.imageView.image =[UIImage imageNamed:@"list_top_icon_active-1.png"]; //image exists

而且它不会改变图像！从另一个角度看，我也这么做了，它们也起作用了——这到底是怎么回事

我甚至尝试设置不存在的图像：

AllButton.imageView.image =[UIImage imageNamed:@"oisagiowgiow.png"]; //image doesn't exist - but no errors or crashes

有人能帮我修一下吗

试试类似的方法

[AllButton setImage:[UIImage imageNamed:@"list_top_icon_active-1.png"] forState:UIControlStateNormal];

并确保您的按钮类型是自定义的

试试这个

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(40, 140, 240, 30);
[button setTitle:@"title" forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];

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应按以下方式将图像指定给UIButton：

[allButton setImage:[UIImage imageNamed:@"oisagiowgiow.png"] forState:UIControlStateNormal];

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没有UIButtonTyperoundRect需要自定义使用名为setBackgroundImage或setImageYou是正确的，但为什么我的代码在其他控制器上工作？

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(40, 140, 240, 30);
[button setTitle:@"title" forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];

[allButton setImage:[UIImage imageNamed:@"oisagiowgiow.png"] forState:UIControlStateNormal];