ios UIButton设置高亮状态下的背景色

一，通过按钮的事件来设置背景色

- ( void )viewDidLoad {
    [ super  viewDidLoad];

    UIButton *button1 = [[UIButton alloc] initWithFrame:CGRectMake(50, 200, 100, 50)];
    [button1 setTitle: @"button1"  forState:UIControlStateNormal];
    button1.backgroundColor = [UIColor orangeColor];
    [button1 addTarget: self  action: @selector (button1BackGroundHighlighted:) forControlEvents:UIControlEventTouchDown];
    [button1 addTarget: self  action: @selector (button1BackGroundNormal:) forControlEvents:UIControlEventTouchUpInside];
    [ self .view addSubview:button1];
}

//  button1普通状态下的背景色
- ( void )button1BackGroundNormal:(UIButton *)sender
{
    sender.backgroundColor = [UIColor orangeColor];
}

//  button1高亮状态下的背景色
- ( void )button1BackGroundHighlighted:(UIButton *)sender
{
    sender.backgroundColor = [UIColor greenColor];
}

二,通过把颜色转换为UIImage来作为按钮不同状态下的背景图片

- ( void )viewDidLoad {
    [ super  viewDidLoad];

    UIButton *button2 = [[UIButton alloc] initWithFrame:CGRectMake(170, 200, 100, 50)];
    [button2 setTitle: @"button2"  forState:UIControlStateNormal];
    [button2 setBackgroundImage:[ self  imageWithColor:[UIColor redColor]] forState:UIControlStateNormal];
    [button2 setBackgroundImage:[ self  imageWithColor:[UIColor grayColor]] forState:UIControlStateHighlighted];
    [ self .view addSubview:button2];
}

//  颜色转换为背景图片
- (UIImage *)imageWithColor:(UIColor *)color {
    CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetFillColorWithColor(context, [color CGColor]);
    CGContextFillRect(context, rect);

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return  image;
}

转载于:https://www.cnblogs.com/sunfuyou/p/8521468.html