iphone - ios5:删除UIButton边框

Question

我的应用程序放置了一个带有自定义背景图像的按钮，我不需要在它周围添加边框。我不确定如何删除边框。我的代码是:

  UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame=CGRectMake(100, 170, 100,30);


    UIImage *cbutton = [UIImage imageNamed:@"pdficon_small.png"];
    [button setImage:cbutton forState:UIControlStateNormal];
    UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button2 addTarget:self 
               action:@selector(openWordings:)
     forControlEvents:UIControlEventTouchDown];   


    [button setTag:2];
    [self.view addSubview:button];

提前致谢。

Answer 1

我假设您的意思是 button 周围有一个边框。要删除它，请替换行

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];

有了这个

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

您现在正在做的是创建一个标准的 RoundedRect 按钮，然后在顶部放置一个图像。使用 UIButtonTypeCustom 将创建本质上是“空白”按钮的内容，允许您使用您的图像。