按钮在执行frame动画的时候怎么响应触发事件？

//
//  ViewController.m
//  TapButton
//
//  Created by YouXianMing on 14/12/7.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // 初始化按钮
    UIButton *button       = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
    button.backgroundColor = [UIColor redColor];
    [button addTarget:self
               action:@selector(buttonEvent:)
     forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
    
    // 执行动画
    [UIView animateWithDuration:10.f
                          delay:0
                        options:UIViewAnimationOptionCurveLinear | UIViewAnimationOptionAllowUserInteraction
                     animations:^{
        button.frame = CGRectMake(0, 468, 100, 100);
    } completion:^(BOOL finished) {
        
    }];
}

/**
 *  按钮事件
 *
 *  @param button 按钮事件
 */
- (void)buttonEvent:(UIButton *)button {
    NSLog(@"YouXianMing");
}

@end

//
//  ViewController.m
//  TapButton
//
//  Created by YouXianMing on 14/12/7.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "ChildView.h"

@interface ViewController ()

{

    ChildView *tmpView;

}

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // 初始化按钮
    tmpView                        = [[ChildView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
    tmpView.backgroundColor        = [UIColor redColor];
    tmpView.userInteractionEnabled = NO; // 让self.view获取点击事件（穿透自身）
    [self.view addSubview:tmpView];

    
    // 执行动画
    [UIView animateWithDuration:10.f
                          delay:0
                        options:UIViewAnimationOptionCurveLinear | UIViewAnimationOptionAllowUserInteraction
                     animations:^{
        tmpView.frame = CGRectMake(0, 468, 100, 100);
    } completion:^(BOOL finished) {
        
    }];
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    // 获取点击点
    CGPoint point = [[touches anyObject] locationInView:self.view];
    
    // 获取tmpView的layer当前的位置
    CGPoint presentationPosition = [[tmpView.layer presentationLayer] position];
    
    // 判断位置，让tmpView接受点击事件
    if (point.x > presentationPosition.x - 50 && point.x < presentationPosition.x + 50 &&
        point.y > presentationPosition.y - 50 && point.y < presentationPosition.y + 50) {
        [tmpView touchesBegan:touches withEvent:event];
    }
}


@end

//
//  ChildView.h
//  TapButton
//
//  Created by YouXianMing on 14/12/7.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ChildView : UIView

@end

//
//  ChildView.m
//  TapButton
//
//  Created by YouXianMing on 14/12/7.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//

#import "ChildView.h"

@implementation ChildView

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    NSLog(@"获取点击事件");
}

@end