Question

我的UIViewController有两个属性：UIImageView和UiButton。它们IBOutlets上的Interface Builder已正确连接。我的问题是，当我实例化这个视图并设置两个属性时，只设置了UIImageView。我的UIButton是custom按钮，我正在尝试为其分配UIImage。这是我的代码：

MyViewController *viewController = [[MyViewController alloc]initWithNibName:@"MyViewController" bundle:nil];

[viewController view];

viewController.myImageView.image = [UIImage imageNamed:@"image1.png"];

viewController.myButton.imageView.image = [UIImage imageNamed:@"image2.png"];

关于我做错什么的任何想法？

Answer 1

看起来好像需要使用特定方法来设置UIButton的图像而不是访问属性的setter。那个方法是：

[viewController.myButton setImage:[UIImage imageNamed:@"image2.png"] forState:UIControlStateNormal];
//Or some other variant of UIControlState such as UIControlStateSelected, UIControlStateDisabled, UIControlStateHighlighted, etc.

Answer 2

替换

viewController.myButton.imageView.image = [UIImage imageNamed:@"image2.png"];

与

[viewController.myButton setBackgroundImage:[UIImage imageNamed:@"image2.png"] forState:UIControlStateNormal];

应该有效

Answer 3

这不是你为按钮设置图像的方式，你应该使用

[viewController.myButton setBackgroundImage:[UIImage imageNamed:@"image2.png"] forState:UIControlStateNormal];

将UIImage设置为自定义UIButton的问题

3 个答案: