一般情况下点击效果都是正常的！要不然你对它做了什么？一般细心的小伙伴都没有遇到这种情况，但是呢！
当然我是二班的！在这里我主要讲两个问题，解决问题和普及魔法。
一.普及问题(button在cell上点击无效)
自定义一个cell，cell里边creat了一个button！然后调试了半天，什么反应都没有！
1.button的enable 设置为yes可点击的。
1.我以为我设置了交互禁用！
self.userInteractionEnabled = YES;
2.button的frame越界了！
首先你要明白action的传递的载体，父试图的载体。
二.普及魔法（扩大button的点击区域）
啥都不说了，直接上代码！！！
//
// UIButton+EnlargeEdge.h
// peter.zhang
//
// Created by peter.zhang on 8/28/14.
// Copyright (c) 2014 peter. All rights reserved.
//
#import <objc/runtime.h>
@interface UIButton (EnlargeEdge)
- (void)setEnlargeEdge:(CGFloat) size;
- (void)setEnlargeEdgeWithTop:(CGFloat) top right:(CGFloat) right bottom:(CGFloat) bottom left:(CGFloat) left;
@end
---------------
//
// UIButton+EnlargeEdge.h
// peter.zhang
//
// Created by peter.zhang on 8/28/14.
// Copyright (c) 2014 peter. All rights reserved.
//
#import "UIButton+EnlargeEdge.h"
@implementation UIButton (EnlargeEdge)
static char topNameKey;
static char rightNameKey;
static char bottomNameKey;
static char leftNameKey;
- (void)setEnlargeEdge:(CGFloat) size
{
objc_setAssociatedObject(self, &topNameKey, [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &bottomNameKey, [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &leftNameKey, [NSNumber numberWithFloat:size], OBJC_ASSOCIATION_COPY_NONATOMIC);
}
- (void)setEnlargeEdgeWithTop:(CGFloat) top right:(CGFloat) right bottom:(CGFloat) bottom left:(CGFloat) left
{
objc_setAssociatedObject(self, &topNameKey, [NSNumber numberWithFloat:top], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &rightNameKey, [NSNumber numberWithFloat:right], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &bottomNameKey, [NSNumber numberWithFloat:bottom], OBJC_ASSOCIATION_COPY_NONATOMIC);
objc_setAssociatedObject(self, &leftNameKey, [NSNumber numberWithFloat:left], OBJC_ASSOCIATION_COPY_NONATOMIC);
}
- (CGRect)enlargedRect
{
NSNumber* topEdge = objc_getAssociatedObject(self, &topNameKey);
NSNumber* rightEdge = objc_getAssociatedObject(self, &rightNameKey);
NSNumber* bottomEdge = objc_getAssociatedObject(self, &bottomNameKey);
NSNumber* leftEdge = objc_getAssociatedObject(self, &leftNameKey);
if (topEdge && rightEdge && bottomEdge && leftEdge)
{
return CGRectMake(self.bounds.origin.x - leftEdge.floatValue,
self.bounds.origin.y - topEdge.floatValue,
self.bounds.size.width + leftEdge.floatValue + rightEdge.floatValue,
self.bounds.size.height + topEdge.floatValue + bottomEdge.floatValue);
}
else
{
return self.bounds;
}
}
- (UIView*)hitTest:(CGPoint) point withEvent:(UIEvent*) event
{
CGRect rect = [self enlargedRect];
if (CGRectEqualToRect(rect, self.bounds))
{
return [super hitTest:point withEvent:event];
}
return CGRectContainsPoint(rect, point) ? self : nil;
}
@end
拖进工程直接用就行了！！！！多多指教
UIButton *btnCancel = [UIButton buttonWithType:UIButtonTypeCustom];
btnCancel.frame = CGRectMake(100, 100, 10, 10);
btnCancel.backgroundColor = [UIColor redColor];
[btnCancel setEnlargeEdgeWithTop:10 right:10 bottom:10 left:10];
[btnCancel addTarget:self action:@selector(cancelBtnClick:) forControlEvents:UIControlEventTouchUpInside];
[topView addSubview:btnCancel];
