//事件监听的问题

    CGRect btn2Frame = CGRectMake(100.0, 150.0, 60.0, 44.0);

    //两种不同的方式创建

    UIButton *btn2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    btn2.frame =btn2Frame;

    //设置Title

    [btn2 setTitle:@"BTN2" forState:UIControlStateNormal];

    //[btn2 setBackgroundImage:[UIImage imageNamed:@"pic.png"] forState:UIControlStateNormal];

    [btn2 setBackgroundColor:[UIColor blueColor]];

    [btn2 addTarget:self action:@selector(btnPressed:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:btn2];

-(void)btnPressed:(id)sender{

    UIButton* btn = (UIButton*)sender;

    NSLog(@"====>name");

    //    UIButton* thisBtn = (UIButton *)sender;

    //    [[[UIAlertView alloc] initWithTitle:@"Button" message:[NSString stringWithFormat: @"This is button:%@ action",thisBtn] delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil] show];

}

-(void) someButtonClicked{

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"

                                                     message:@"您点击了动态按钮！"

                                                    delegate:self

                                           cancelButtonTitle:@"确定"

                                           otherButtonTitles:@"第二项", @"第三项", nil] ;

    [alert show];

}