iOS UIScrollView不能响应TouchBegin事件的处理方法：

原因：UIView的Touch事件被UIScrollview捕获了，所以UIView里面的Touch事件没有响应——————解决方法：将UIScrollview的捕获的Touch事件往上传；————给UIScrollview添加类别：UIScrollView+UITouch.h

代码：

#import "UIScrollView+UITouch.h"

 

@implementation UIScrollView (UITouch)

 

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    [[self nextResponder] touchesBegan:touches withEvent:event];

    [super touchesBegan:touches withEvent:event];

}

-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    [[self nextResponder]touchesMoved:touches withEvent:event];

    [super touchesMoved:touches withEvent:event];

}

-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    [[self nextResponder]touchesEnded:touches withEvent:event];

    [super touchesEnded:touches withEvent:event];

}

@end

 

 

app上线之后因为这个报了一个错：

[__NSCFBoolean objectForKey:]: unrecognized selector sent to instance 0x19fee40b0
(null)
解决办法：在在UIScrollView上面加一个UIView,通过在view上面的手势来改变键盘，代码如下：

 UITapGestureRecognizer*tapView=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapInTouchView)];

    tapView.numberOfTapsRequired=1;

    tapView.numberOfTouchesRequired=1;

    [self.touchView addGestureRecognizer:tapView];