iphone - 具有固定大小自定义图像的 UIButton

Question

我有一个自定义的 UIButton，如下所示:

 UIButton * action = [UIButton buttonWithType:UIButtonTypeCustom];
        [action setSize:CGSizeMake(30, 30)];
    [action setBackgroundImage:[UIImage imageNamed:@"contextaction.png"] forState:UIControlStateNormal];
    [action setContentMode:UIViewContentModeCenter];
    [action addTarget:self action:@selector(actionButtonPressed:) forControlEvents:UIControlEventTouchUpInside];

我拥有的真实图像实际上大小为 10x10，居中，我希望它保持这种状态，而不是缩放到按钮大小。我该怎么做？

修改后的代码:

UIButton * action = [UIButton buttonWithType:UIButtonTypeCustom];
    [action setSize:CGSizeMake(44, 44)];
    [action setImage:[UIImage imageNamed:@"contextaction.png"] forState:UIControlStateNormal];
    [action addTarget:self action:@selector(actionButtonPressed:) forControlEvents:UIControlEventTouchUpInside];

    if (IS_IPAD){
        action.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
        action.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
    }
     actionButton_ = [[UIBarButtonItem alloc] initWithCustomView:action];

仍在扩展

Answer 1

为此，我认为您需要使用图像插入属性 UIButton Class Reference