关于UIScrollView响应touchesBegan和touchesEnd

编程小号 • 2023-05-20 18:46 • 未分类

ViewController中，常用touch事件关闭编辑事件，收起键盘。

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
    
}

但是addSubview的UIScorllView并不能直接响应touchesBegan和touchesEnd事件。

因此需要继承UIScrolleView类，并重写方法。

@interface myScrollView : UIScrollView 
@end

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