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

 

itouch，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