iphone – 为UIButton设置背景图像

我是Objective C的新手。如何将此按钮的背景设置为图像(图像已经在XCode中的资源文件夹中，“blue_button.png”)而不是clearColor？此外，我更喜欢使用图像作为按钮的形状，而不是UIButtonTypeRoundedRect。

btnClear = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];

btnClear.frame = CGRectMake(115,350,90,40);

[btnClear setTitle:@"Clear" forState:UIControlStateNormal];

btnClear.backgroundColor = [UIColor clearColor];

[btnClear addTarget:self action:@selector(clearAction:) 

forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btnClear];

我知道如何在Interface Builder中执行此操作，但我宁愿了解如何在XCode中执行此操作。

琳达

解决方法

这样做：

UIButton *btnClear = [[UIButton alloc] init];
btnClear = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
btnClear.frame = CGRectMake(115,200,40);
[btnClear setTitle:@"Clear" forState:UIControlStateNormal];
[btnClear setBackgroundImage:[UIImage imageNamed:@"blue_button.png"] forState:UIControlStateNormal];
[btnClear addTarget:self action:@selector(clearAction:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btnClear];