增加类别，在输入第二个字时
前段时间总监有个需求让我实现，就是可伸缩的UIButton
在本类存在：#import "UIScrollView+UITouch.h"
[self.view addGestureRecognizer:tapGestureRecognizer];
@implementation UIScrollView (UITouch)
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesBegan:touches withEvent:event];
[super touchesBegan:touches withEvent:event];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesMoved:touches withEvent:event];
[super touchesMoved:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesEnded:touches withEvent:event];
[super touchesEnded:touches withEvent:event];
}
@end
ios UIScrollView不能响应TouchesBegin：的事件的解决办法
1：@property MyScrollView *scrollView;
2：给MyScrollView，增加类别：MyScrollView+Touch
3：在类别里实现下面三个方法：
@implementation MyScrollView (Touch)
(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesBegan:touches withEvent:event];
[super touchesBegan:touches withEvent:event];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesMoved:touches withEvent:event];
[super touchesMoved:touches withEvent:event];
}(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesEnded:touches withEvent:event];
[super touchesEnded:touches withEvent:event];
}
@end
4：- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
[self hiddenkeyBoard];
}
UIScrollView不能响应TouchesBegin：的事件的解决办法 1 ：@property MyScrollView *scrollView; 2：给MyScrollView，增加类别：MyScrollView+Touch 3：在类别里实...
最后要实现的效果大概就是这样。
unrecognized
}
注：我类目头文件只在某个界面的.m文件引入，也变成全局了，别的界面也都影响了。这个令人费解。如果大家对这个有好的解决方法，欢迎留言，或者QQ我，QQ：348031375 备注：简书。
// [super touchesEnded:touches withEvent:event];
iOS 手写输入法奔溃，一种方法是常见的新建一个view监听点击手势，隐藏键盘，然后这个view最后加入到self.view要整屏宽高，
之前一个版本线上项目突然大规模出现这个报错信息，[UIKBBlurredKeyView candidateList]这个错误google一下基本都是说scrollview重写了触摸事件和手写输入法冲突。
- touchesBegan:touches withEvent:(UIEvent *)event{ [super touchesBegan:touches withEvent:event]; self.highlighted = YES; if (![objc_getAssociatedObject(self, DragEnableKey) boolValue]) { return; } begincenter=self.superview.center; UITouch *touch = [touches anyObject]; beginPoint = [touch locationInView:self.superview];}
// [super touchesMoved:touches withEvent:event];
- (void)keyboardHide:(UITapGestureRecognizer *)sender
也欢迎更多iOSer来交流
*- touchesBegan:(NSSet)touches withEvent:(UIEvent)event;*
*- touchesMoved:(NSSet)touches withEvent:(UIEvent)event;*
*-touchesEnded:(NSSet)touches withEvent:(UIEvent)event;*
//
另外一种就是，判断一下是否是uiscrollview，看了网上一个帖子觉得挺好
UIScrollView 上如果有UITextField的话，结束编辑（退出键盘）直接用touchesBegan方法无效，需要再给UIScrollView加一个分类，重写几个方法。
网上已经有很多前辈给了相关代码是这样的（阅前提示：这样是有问题的！）：
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesBegan:touches withEvent:event];
[super touchesBegan:touches withEvent:event];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesMoved:touches withEvent:event];
[super touchesMoved:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[[self nextResponder] touchesEnded:touches withEvent:event];
[super touchesEnded:touches withEvent:event];
}
这样会有一个严重问题，就是使用手写输入法输入中文会导致崩溃（虽然使用手写输入法的人不多，但也不能无视他们）。被坑死，问题是百度出来尼玛80~90%全是这种解决方法。坑死人！
有一些前辈对于“UIScrollView点击空白处退出键盘”就提出了另一种解决方法：加一层view，给view一个点击事件，退出键盘。
但是我的项目中已经被前一种方法坑了，已经有用户反映手写崩溃，换第二种方法的话很麻烦，需要修改之后重新提交审核，不能及时解决，我需要及时的用JSPatch线上打补丁解决。调试了很久，我发现手写键盘在调用UIScrollView的这个分类的方法时，self的类型是UIKBCandidateCollectionView，一种系统没有暴露出来的类型，应该是UIScrollView的一个子类，所以解决办法就呼之欲出了，直接上代码。
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesBegan:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesBegan:touches withEvent:event];
}
}
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesMoved:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesMoved:touches withEvent:event];
}
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
if (![self isMemberOfClass:[UIScrollView class]]) {
} else {
[[self nextResponder] touchesEnded:touches withEvent:event];
if ([super respondsToSelector:@selector(touchesBegan:withEvent:)]) {
[super touchesEnded:touches withEvent:event];
}
}
}
作者：vincent涵
链接：
來源：简书
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。
name:NSInvalidArgumentException
reason:-[UIKBBlurredKeyView candidateList]: unrecognized selector sent to instance 0x100dae340
比如:
//- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
//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。
我确实重写了这几个方法，为了解决scrollview加在uiview上，uiview的点击事件的。但是网上说的几个办法并不行，有人提出重写viewController的touch方法，用ismemberOf区分下scroll，但是我由于用的界面太多，所以没有测试。目前只能暂时先去掉这个类目（毕竟用户数量虽少，闪退是很重的）。
本文由必威发布于必威-编程,转载请注明出处：增加类别，在输入第二个字时
TAG标签：
