iOS 按鈕點選改變背景色
- (void)viewDidLoad {
[superviewDidLoad];
// Do any additional setup after loading the view.
UIButton *btn = [[UIButtonalloc] initWithFrame:CGRectMake(50, 50, 80, 40)];
btn.backgroundColor=[UIColorcolorWithRed:76/255.0green:91/255.0blue:120/255.0alpha:1];
[btn.layer setCornerRadius:3];
btn.
[btn setTitle:@"button"forState:UIControlStateNormal];
[btn setTitleColor:[UIColorwhiteColor] forState:UIControlStateNormal];
[btn setBackgroundImage:[selfimageWithColor:[UIColorcolorWithRed:76/255.0green:91/255.0blue:120/255.0alpha:1]] forState:UIControlStateNormal];
[btn setBackgroundImage:[selfimageWithColor:[UIColorcolorWithRed:54/255.0green:65/255.0blue:87/255.0alpha:1]] forState:UIControlStateHighlighted];
[self.view addSubview:btn];
}
// 顏色轉換為背景圖片
- (UIImage *)imageWithColor:(UIColor *)color {
CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
UIGraphicsBeginImageContext(rect.
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}