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iOS手势的实现方法

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本文实例为大家分享了ios手势的具体实现代码,供大家参考,具体内容如下 。

效果 。

iOS手势的实现方法

细节 。

1.uitouch 。

  。

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#import "viewcontroller_0.h"
 
@interface viewcontroller_0 ()
 
@property (nonatomic, strong)uilabel *label;
 
@end
 
@implementation viewcontroller_0
 
- ( void )viewdidload {
  
   [super viewdidload];
  
   self.label          = [[uilabel alloc] initwithframe:cgrectmake(100, 100, 100, 100)];
   self.label.backgroundcolor  = [uicolor yellowcolor];
   self.label.layer.borderwidth = 1;
   [self.view addsubview:self.label];
  
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "拖动方块" ;
   [textlabel sizetofit];
   textlabel.font   = [uifont systemfontofsize:12];
   [self.view addsubview:textlabel];
}
 
- ( void )touchesbegan:(nsset<uitouch *> *)touches withevent:(nullable uievent *)event {
 
   //1.拿到手势
   uitouch *touch = [touches anyobject];
  
   //2.拿到touch 所在view的坐标
   cgpoint point = [touch locationinview:self.view];
  
   //3.让label拿到坐标
   self.label.center = point;
  
   nslog(@ "1.手指接触到了屏幕" );
}
 
- ( void )touchesmoved:(nsset<uitouch *> *)touches withevent:(nullable uievent *)event {
 
   //1.拿到手势
   uitouch *touch = [touches anyobject];
  
   //2.拿到touch 所在view的坐标
   cgpoint point = [touch locationinview:self.view];
  
   //3.让label拿到坐标
   self.label.center = point;
  
   nslog(@ "2.手指在屏幕上移动" );
}
 
- ( void )touchesended:(nsset<uitouch *> *)touches withevent:(nullable uievent *)event {
 
    nslog(@ "3.手指刚离开屏幕" );
}
 
- ( void )touchescancelled:(nsset<uitouch *> *)touches withevent:(nullable uievent *)event {
 
   nslog(@ "4.手势失效了" );
}
 
@end

2.uitapgesturerecognizer 。

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#import "viewcontroller_1.h"
 
@interface viewcontroller_1 ()
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_1
 
- ( void )viewdidload {
  
   [super viewdidload];
 
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "电脑上操作tap手势 alt +shift 需要连续点击次数2次" ;
   [textlabel sizetofit];
   textlabel.font   = [uifont systemfontofsize:12];
   [self.view addsubview:textlabel];
  
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(100, 150, 100, 100)];
   self.label.backgroundcolor    = [uicolor orangecolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "0" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
  
   // 1.创建tap手势
   uitapgesturerecognizer *tap = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(labeltap:)];
   tap.numberoftapsrequired  = 2; //需要轻轻点击的次数
   tap.numberoftouchesrequired = 2; //需要的手指数量 :2根手指alt +shift 需要匹配点击次数2次(其实直接用默认的就好)
   [self.label addgesturerecognizer:tap];
}
 
- ( void )labeltap:(uitapgesturerecognizer *)tap {
 
   int num = [self.label.text intvalue];
   num++;
   self.label.text = [nsstring stringwithformat:@ "%d" ,num ];
}
 
@end

3.uilongpressgesturerecognizer 。

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#import "viewcontroller_2.h"
 
@interface viewcontroller_2 () <uigesturerecognizerdelegate>
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_2
 
- ( void )viewdidload {
  
   [super viewdidload];
  
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "long长按手势" ;
   [textlabel sizetofit];
   textlabel.font   = [uifont systemfontofsize:12];
   [self.view addsubview:textlabel];
  
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(40, 150, 200, 150)];
   self.label.backgroundcolor    = [uicolor graycolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "0" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
  
   uilongpressgesturerecognizer *longpress = [[uilongpressgesturerecognizer alloc] initwithtarget:self action:@selector(longpressaction:)];
   longpress.numberoftapsrequired     = 1;
   longpress.numberoftouchesrequired    = 1;
   longpress.minimumpressduration     = 1.0;
   longpress.delegate  = self;
   [self.label addgesturerecognizer:longpress];
}
 
- ( void )longpressaction:(uilongpressgesturerecognizer *)longpress {
 
   if (longpress.state == uigesturerecognizerstatebegan) {
    
     nslog(@ "手势状态开始" );
    
   } else if (longpress.state == uigesturerecognizerstateended) {
    
     nslog(@ "手势状态结束" );
  
   } else if (longpress.state == uigesturerecognizerstatechanged) {
    
     nslog(@ "手势状态改变" );
    
     nsinteger num = [self.label.text integervalue];
     num ++;
     self.label.text = [nsstring stringwithformat:@ "%ld" ,( long )num];
   }
}
 
@end

4.uiswipegesturerecognizer 。

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#import "viewcontroller_3.h"
 
@interface viewcontroller_3 ()
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_3
 
- ( void )viewdidload {
  
   [super viewdidload];
 
   uilabel *textlabel   = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text     = @ "swipe手势 向右滑动➕1,你也可以设置左划上划下划" ;
   textlabel.numberoflines = 0;
   textlabel.font     = [uifont systemfontofsize:12];
   [self.view addsubview:textlabel];
  
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(100, 150, 100, 100)];
   self.label.backgroundcolor    = [uicolor graycolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "0" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
 
   uiswipegesturerecognizer *swipegesture = [[uiswipegesturerecognizer alloc] initwithtarget:self action:@selector(swipeaction:)];
   swipegesture.direction         = uiswipegesturerecognizerdirectionright; //默认就是向右划
   [self.label addgesturerecognizer:swipegesture];
}
 
-( void )swipeaction:(uiswipegesturerecognizer *)swipe {
 
   if (swipe.direction == uiswipegesturerecognizerdirectionleft) {
    
     nslog(@ "现在响应左划手势" );
    
   } else if (swipe.direction == uiswipegesturerecognizerdirectionright) {
    
     nslog(@ "现在响应右划手势" );
    
     nsinteger num  = [self.label.text integervalue];
     num ++;
     self.label.text = [nsstring stringwithformat:@ "%ld" ,( long )num];
    
   } else if (swipe.direction == uiswipegesturerecognizerdirectionup) {
    
     nslog(@ "现在响应上划手势" );
    
   } else if (swipe.direction == uiswipegesturerecognizerdirectiondown) {
    
     nslog(@ "现在响应下划手势" );
   }
}
 
@end

 5.uipangesturerecognizer 。

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#import "viewcontroller_4.h"
 
@interface viewcontroller_4 ()
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_4
 
- ( void )viewdidload {
  
   [super viewdidload];
  
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "pan手势,拖动方块" ;
   [textlabel sizetofit];
   textlabel.font   = [uifont systemfontofsize:12];
   [self.view addsubview:textlabel];
 
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(100, 100, 100, 100)];
   self.label.backgroundcolor    = [uicolor graycolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "0" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
 
   uipangesturerecognizer *pan = [[uipangesturerecognizer alloc] initwithtarget:self action:@selector(panaction:)];
   [self.label addgesturerecognizer:pan];
}
 
- ( void )panaction:(uipangesturerecognizer *)pan {
  
   cgpoint offset  = [pan locationinview:self.view];
   self.label.center = offset;
}
 
@end

6.uirotationgesturerecognizer 。

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#import "viewcontroller_5.h"
 
@interface viewcontroller_5 ()
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_5
 
- ( void )viewdidload {
  
   [super viewdidload];
  
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "模拟器测试旋转手势时,按住 option键,再用触摸板或鼠标操作" ;
   textlabel.font   = [uifont systemfontofsize:12];
   textlabel.numberoflines = 0;
   [self.view addsubview:textlabel];
 
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(40, 200, 200, 50)];
   self.label.backgroundcolor    = [uicolor graycolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "we are friends" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
  
   //(模拟器测试捏合和旋转手势时,按住 option 键,再用触摸板或鼠标操作)
   uirotationgesturerecognizer *rotation = [[uirotationgesturerecognizer alloc] initwithtarget:self action:@selector(rotationaction:)];
   [self.view addgesturerecognizer:rotation];
 
}
 
- ( void )rotationaction:(uirotationgesturerecognizer *)rotation {
  
   self.label.transform = cgaffinetransformrotate(self.label.transform, rotation.rotation);
   rotation.rotation = 0; // 这个很重要!!!!!
 
//  static float orginstate;
// 
//  self.label.transform = cgaffinetransformmakerotation(rotation.rotation + orginstate);
// 
//  if (rotation.state == uigesturerecognizerstateended) {
//   
//    orginstate = orginstate + rotation.state;
//    self.label.transform = cgaffinetransformmakerotation(rotation.rotation);
//  }
}
 
@end

7.uipinchgesturerecognizer 。

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#import "viewcontroller_6.h"
 
@interface viewcontroller_6 ()
 
@property (nonatomic, strong) uilabel *label;
 
@end
 
@implementation viewcontroller_6
 
- ( void )viewdidload {
  
   [super viewdidload];
 
   uilabel *textlabel = [[uilabel alloc] initwithframe:cgrectmake(10, 80, 200, 45)];
   textlabel.text   = @ "模拟器测试捏合手势时,按住 option键,再用触摸板或鼠标操作" ;
   textlabel.font   = [uifont systemfontofsize:12];
   textlabel.numberoflines = 0;
   [self.view addsubview:textlabel];
  
   self.label            = [[uilabel alloc] initwithframe:cgrectmake(100, 250, 80, 80)];
   self.label.backgroundcolor    = [uicolor graycolor];
   self.label.userinteractionenabled = yes;
   self.label.text          = @ "0" ;
   self.label.textalignment     = nstextalignmentcenter;
   [self.view addsubview:self.label];
  
//  (模拟器测试捏合和旋转手势时,按住 option 键,再用触摸板或鼠标操作)
   uipinchgesturerecognizer * pinch = [[uipinchgesturerecognizer alloc]initwithtarget:self action:@selector(pichgesture:)];
   [self.view addgesturerecognizer:pinch];
}
 
- ( void )pichgesture:(uipinchgesturerecognizer *)pinch {
  
   static float originscale = 1;
  
   //手势缩放返回的scale 是相对于上一次的
   self.label.transform = cgaffinetransformmakescale(pinch.scale * originscale , pinch.scale*originscale);
  
   if (pinch.state == uigesturerecognizerstateended) {
    
     originscale = originscale * pinch.scale;
   }
}
 
@end

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