iOS触摸手势——UITouch
uitouch，主要是重写四个方法(触摸开始、触摸移动、触摸结束、触摸退出)以实现触摸响应方法
1、触摸开始- (void)touchesbegan:(nsset *)touches withevent:(uievent *)event { }
2、触摸移动- (void)touchesmoved:(nsset *)touches withevent:(uievent *)event { }
3、触摸结束- (void)touchesended:(nsset *)touches withevent:(uievent *)event { }
4、触摸退出(注意：通常是受到设备其他方法的影响：如来电、电量不足关机等)- (void)touchescancelled:(nsset *)touches withevent:(uievent *)event { }
使用注意事项：
1、触摸开始方法中，一般实现的属性有：
1-1、获取触摸对象，如：
uitouch*touch=touches.anyobject;
1-2、触摸次数，以便判断实现对应方法，如：
nsintegerclicknumber=touch.tapcount;
nslog(@"clicknumber=%@",@(clicknumber));
1-3、触摸位置是否用户想要处理的子视图，如：
cgpointcurrentpoint=[touchlocationinview:self.view];
if(cgrectcontainspoint(self.label.frame,currentpoint))
{
//改变标题
self.label.text=@"触摸位置在当前label";
}
2、触摸移动方法中，一般实现的属性有：
2-1、获取触摸对象，如：
uitouch *touch = touches.anyobject;
2-2、获取当前点击位置，以及上一个点击位置，如：
cgpointcurrentpoint=[touchlocationinview:self.view];
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
注：可通过触摸移动改变子视图的位置，如：
floatmovex=currentpoint.x-previouspoint.x;
floatmovey=currentpoint.y-previouspoint.y;
cgfloatcenterx=self.label.center.x+movex;
cgfloatcentery=self.label.center.y+movey;
self.label.center=cgpointmake(centerx,centery);
//触摸开始
-(void)touchesbegan:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorcolorwithred:(arc4random()%255/255.0)green:(arc4random()%255/255.0)blue:(arc4random()%255/255.0)alpha:1.0];
nslog(@"触摸手势开始");
//获取触摸对象
uitouch*touch=touches.anyobject;
//获取触摸次数
nsintegerclicknumber=touch.tapcount;
nslog(@"clicknumber=%@",@(clicknumber));
if(2==clicknumber)
{
self.label.backgroundcolor=[uicolorredcolor];
}
elseif(3==clicknumber)
{
self.label.backgroundcolor=[uicolorgreencolor];
}
//获取触摸状态
uitouchphasestate=touch.phase;
nslog(@"state=%ld",state);
//获取响应视图对象
uiview*view=touch.view;
nslog(@"view=%@",view);
//获取当前触摸位置
cgpointcurrentpoint=[touchlocationinview:self.view];
nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
//获取当前触摸的前一个位置
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
//获取触摸区域的子视图
//方法1
//for(uiview*oneviewinself.view.subviews)
//{
//if([oneviewiskindofclass:[uilabelclass]])
//{
////是否选中图标(当前坐标是否包含所选图标)
//if(cgrectcontainspoint(oneview.frame,currentpoint))
//{
////获取当前被选择图标
//uilabel*selectedview=(uilabel*)oneview;
////改变标题
//selectedview.text=@"触摸位置在当前label";
//}
//}
//}
//方法2
if(cgrectcontainspoint(self.label.frame,currentpoint))
{
//改变标题
self.label.text=@"触摸位置在当前label";
}
}
//触摸移动
-(void)touchesmoved:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorcolorwithred:(arc4random()%255/255.0)green:(arc4random()%255/255.0)blue:(arc4random()%255/255.0)alpha:1.0];
nslog(@"触摸手势移动");
//移动ui视图控件
//方法1获得触摸点的集合，可以判断多点触摸事件
for(uitouch*touchinevent.alltouches)
{
//获取当前触摸坐标
cgpointcurrentpoint=[touchlocationinview:self.view];
nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
//获取当前触摸前一个坐标
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
//坐标偏移量(效果异常??)
floatmovex=currentpoint.x-previouspoint.x;
floatmovey=currentpoint.y-previouspoint.y;
cgfloatcenterx=self.label.center.x+movex;
cgfloatcentery=self.label.center.y+movey;
self.label.center=cgpointmake(centerx,centery);
}
//方法2
//uitouch*touch=touches.anyobject;
////获取当前触摸坐标
//cgpointcurrentpoint=[touchlocationinview:self.view];
//nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
////获取当前触摸前一个坐标
//cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
//nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
////坐标偏移量
//floatmovex=currentpoint.x-previouspoint.x;
//floatmovey=currentpoint.y-previouspoint.y;
//cgfloatcenterx=self.label.center.x+movex;
//cgfloatcentery=self.label.center.y+movey;
//self.label.center=cgpointmake(centerx,centery);
}
//触摸结束
-(void)touchesended:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorwhitecolor];
nslog(@"触摸手势结束");
self.label.text=@"touch触摸手势";
}
//触摸退出(注意：通常是受到设备其他方法的影响：如来电、电量不足关机等)
-(void)touchescancelled:(nsset*)toucheswithevent:(uievent*)event
{
nslog(@"触摸手势退出");
}
效果图
1、触摸开始- (void)touchesbegan:(nsset *)touches withevent:(uievent *)event { }
2、触摸移动- (void)touchesmoved:(nsset *)touches withevent:(uievent *)event { }
3、触摸结束- (void)touchesended:(nsset *)touches withevent:(uievent *)event { }
4、触摸退出(注意：通常是受到设备其他方法的影响：如来电、电量不足关机等)- (void)touchescancelled:(nsset *)touches withevent:(uievent *)event { }
使用注意事项：
1、触摸开始方法中，一般实现的属性有：
1-1、获取触摸对象，如：
uitouch*touch=touches.anyobject;
1-2、触摸次数，以便判断实现对应方法，如：
nsintegerclicknumber=touch.tapcount;
nslog(@"clicknumber=%@",@(clicknumber));
1-3、触摸位置是否用户想要处理的子视图，如：
cgpointcurrentpoint=[touchlocationinview:self.view];
if(cgrectcontainspoint(self.label.frame,currentpoint))
{
//改变标题
self.label.text=@"触摸位置在当前label";
}
2、触摸移动方法中，一般实现的属性有：
2-1、获取触摸对象，如：
uitouch *touch = touches.anyobject;
2-2、获取当前点击位置，以及上一个点击位置，如：
cgpointcurrentpoint=[touchlocationinview:self.view];
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
注：可通过触摸移动改变子视图的位置，如：
floatmovex=currentpoint.x-previouspoint.x;
floatmovey=currentpoint.y-previouspoint.y;
cgfloatcenterx=self.label.center.x+movex;
cgfloatcentery=self.label.center.y+movey;
self.label.center=cgpointmake(centerx,centery);
//触摸开始
-(void)touchesbegan:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorcolorwithred:(arc4random()%255/255.0)green:(arc4random()%255/255.0)blue:(arc4random()%255/255.0)alpha:1.0];
nslog(@"触摸手势开始");
//获取触摸对象
uitouch*touch=touches.anyobject;
//获取触摸次数
nsintegerclicknumber=touch.tapcount;
nslog(@"clicknumber=%@",@(clicknumber));
if(2==clicknumber)
{
self.label.backgroundcolor=[uicolorredcolor];
}
elseif(3==clicknumber)
{
self.label.backgroundcolor=[uicolorgreencolor];
}
//获取触摸状态
uitouchphasestate=touch.phase;
nslog(@"state=%ld",state);
//获取响应视图对象
uiview*view=touch.view;
nslog(@"view=%@",view);
//获取当前触摸位置
cgpointcurrentpoint=[touchlocationinview:self.view];
nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
//获取当前触摸的前一个位置
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
//获取触摸区域的子视图
//方法1
//for(uiview*oneviewinself.view.subviews)
//{
//if([oneviewiskindofclass:[uilabelclass]])
//{
////是否选中图标(当前坐标是否包含所选图标)
//if(cgrectcontainspoint(oneview.frame,currentpoint))
//{
////获取当前被选择图标
//uilabel*selectedview=(uilabel*)oneview;
////改变标题
//selectedview.text=@"触摸位置在当前label";
//}
//}
//}
//方法2
if(cgrectcontainspoint(self.label.frame,currentpoint))
{
//改变标题
self.label.text=@"触摸位置在当前label";
}
}
//触摸移动
-(void)touchesmoved:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorcolorwithred:(arc4random()%255/255.0)green:(arc4random()%255/255.0)blue:(arc4random()%255/255.0)alpha:1.0];
nslog(@"触摸手势移动");
//移动ui视图控件
//方法1获得触摸点的集合，可以判断多点触摸事件
for(uitouch*touchinevent.alltouches)
{
//获取当前触摸坐标
cgpointcurrentpoint=[touchlocationinview:self.view];
nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
//获取当前触摸前一个坐标
cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
//坐标偏移量(效果异常??)
floatmovex=currentpoint.x-previouspoint.x;
floatmovey=currentpoint.y-previouspoint.y;
cgfloatcenterx=self.label.center.x+movex;
cgfloatcentery=self.label.center.y+movey;
self.label.center=cgpointmake(centerx,centery);
}
//方法2
//uitouch*touch=touches.anyobject;
////获取当前触摸坐标
//cgpointcurrentpoint=[touchlocationinview:self.view];
//nslog(@"touch.locationinview={%2.3f,%2.3f}",currentpoint.x,currentpoint.y);
////获取当前触摸前一个坐标
//cgpointpreviouspoint=[touchpreviouslocationinview:self.view];
//nslog(@"touch.previouslocationinview={%2.3f,%2.3f}",previouspoint.x,previouspoint.y);
////坐标偏移量
//floatmovex=currentpoint.x-previouspoint.x;
//floatmovey=currentpoint.y-previouspoint.y;
//cgfloatcenterx=self.label.center.x+movex;
//cgfloatcentery=self.label.center.y+movey;
//self.label.center=cgpointmake(centerx,centery);
}
//触摸结束
-(void)touchesended:(nsset*)toucheswithevent:(uievent*)event
{
//self.view.backgroundcolor=[uicolorwhitecolor];
nslog(@"触摸手势结束");
self.label.text=@"touch触摸手势";
}
//触摸退出(注意：通常是受到设备其他方法的影响：如来电、电量不足关机等)
-(void)touchescancelled:(nsset*)toucheswithevent:(uievent*)event
{
nslog(@"触摸手势退出");
}
效果图