iOS-如何设置按钮高亮的背景颜色

分析:通过按钮的不同的点击事件状态来设置背景色,或者不同的状态设置背景图片 1.通过按钮的事件来设置背景色2.通过把颜色转换为UIImage来作为按钮不同状态下的背景图片3.同方法二,直接用图片设置不同状态下的背景图片

1.通过按钮的事件来设置背景色

1.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]; }

2.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; }