iOS7/8 UIButton高亮状态延迟问题全解

标签：uitableview   uiscrollview   uibutton   高亮   延迟   

估计很多码友都遇到过这样的情况：

UIButton在某些情况下不能立刻响应TouchDown事件，换句话说，迅速点击按钮时，你是永远看不见这个按钮的高亮状态的。

NoDelayButtonScrollView.h：

#import <UIKit/UIKit.h>
@interface NoDelayButtonScrollView : UIScrollView
@end

@interface NoDelayButtonTableView : UITableView
@end

#import "NoDelayButtonScrollView.h"
@implementation NoDelayButtonScrollView
- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
       self.delaysContentTouches = NO;
    }
    return self;
}
- (BOOL)touchesShouldCancelInContentView:(UIView *)view
{
    if ([view isKindOfClass:[UIButton class]])
    {
        return YES;
    }
    return [super touchesShouldCancelInContentView:view];
}
@end

@implementation NoDelayButtonTableView
- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
self.delaysContentTouches = NO;

        // iterate over all the UITableView's subviews
        for (id view in self.subviews)
        {
            // looking for a UITableViewWrapperView
            if ([NSStringFromClass([view class]) isEqualToString:@"UITableViewWrapperView"])
            {
                // this test is necessary for safety and because a "UITableViewWrapperView" is NOT a UIScrollView in iOS7
                if([view isKindOfClass:[UIScrollView class]])
                {
                    // turn OFF delaysContentTouches in the hidden subview
                    UIScrollView *scroll = (UIScrollView *) view;
                    scroll.delaysContentTouches = NO;
                }
                break;
            }
        }
    }
    return self;
}


- (BOOL)touchesShouldCancelInContentView:(UIView *)view
{
    if ([view isKindOfClass:[UIButton class]])
    {
        return YES;
    }
    return [super touchesShouldCancelInContentView:view];
}
@end

for (id obj in cell.subviews)
{
    if ([NSStringFromClass([obj class]) isEqualToString:@"UITableViewCellScrollView"])
    {
        UIScrollView *scroll = (UIScrollView *) obj;
        scroll.delaysContentTouches = NO;
        break;
    }
}

iOS7/8 UIButton高亮状态延迟问题全解

标签：uitableview   uiscrollview   uibutton   高亮   延迟   

原文地址：http://blog.csdn.net/youngsblog/article/details/44875267