UIButton *btn = [UIButton newAutoLayoutView];
[self.view addSubview:btn];
[btn setTitle:@"test" forState:UIControlStateNormal];
[btn autoCenterInSuperview];
[btn addTarget:self action:@selector(clickBtn:) forControlEvents:UIControlEventTouchUpInside];
[btn sendActionsForControlEvents:UIControlEventTouchUpInside]; //代码自动点击
- (void)clickBtn:(UIButton *)btn{
NSLog(@"我被点击啦");
}