object c 源代码动态增加按钮，并给按钮一个点击事件
- (void)viewDidLoad {
[super viewDidLoad];
CGRect frame = CGRectMake(90, 200, 200, 60);
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = frame;
btn.backgroundColor = [UIColor clearColor];
[btn setTitle:@"动态添加一个按钮!" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(Edit:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//一下代码为点击事件，注释的代码打开，可以出来一个消息弹窗
-(IBAction)Edit:(id)sender{
//NSString *msg = @"f*au*ck U";
//UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"message" message:msg delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil]; [alert show];
}