scrollview/tableview 无法响应touch事件

scrollview 及其子视图无法响应touch事件

办法一：给view添加点击事件

    - (void)viewDidLoad  
    {  
        [super viewDidLoad];  
        UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(keyboardHide:)];  
        //设置成NO表示当前控件响应后会传播到其他控件上，默认为YES。  
        tapGestureRecognizer.cancelsTouchesInView = NO;  
        //将触摸事件添加到当前view  
        [self.view addGestureRecognizer:tapGestureRecognizer];  
    }  
      
    -(void)keyboardHide:(UITapGestureRecognizer*)tap{  
        [textFiled resignFirstResponder];  
    }  

办法二：创建scrollview的分类，重写touch方法

@implementation UIScrollView (Touch)

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
	NSLog(@"touch begin");
	if(!self.dragging)
	{
		[[self nextResponder] touchesBegan:touches withEvent:event];
	}
	[super touchesBegan:touches withEvent:event];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
	if(!self.dragging)
	{
		[[self nextResponder] touchesMoved:touches withEvent:event];
	}
	[super touchesMoved:touches withEvent:event];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
	if(!self.dragging)
	{
		[[self nextResponder] touchesEnded:touches withEvent:event];
	}
	[super touchesEnded:touches withEvent:event];
}

@end