iOS UIButton按钮点击闪烁

其实这个很简单，加一个if判断就可以了，但是我记得刚学到UI的时候，做出来来有点小成就感。以下是代码：

#import "ViewController.h"

@interface ViewController ()

{

UIButton*button;

}

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

button = [[UIButton alloc]initWithFrame:CGRectMake(20, 100, 44, 44)];

[self.view addSubview:button];

button.backgroundColor = [UIColor redColor];

[button addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];

}

-(void)click

{

if (button.backgroundColor == [UIColor redColor]) {

button.backgroundColor = [UIColor greenColor];

}

else if (button.backgroundColor == [UIColor greenColor]){

button.backgroundColor = [UIColor blueColor];

}

else{

button.backgroundColor = [UIColor redColor];

}

}

就这样了 。