IOS 手勢(shì)操作詳解及實(shí)例總結(jié)篇

更新時(shí)間：2017年01月08日 14:31:18 作者：gccll

這篇文章主要介紹了IOS 手勢(shì)操作詳解及實(shí)例總結(jié)篇的相關(guān)資料,需要的朋友可以參考下

iOS手勢(shì)操作總結(jié)

手勢(shì)操作種類

UITapGestureRecognizer: 敲擊，點(diǎn)擊
UILongPressGestureRecognizer: 長按
UIPinchGestureRecognizer: 縮放
UIRotationGestureRecognizer: 旋轉(zhuǎn)
UISwipeGestureRecongizer: 輕掃
UIPanGestureRecognizer: 拖拽

手勢(shì)操作的代理方法(UIGestureRecognizerDelegate)

手勢(shì)可能發(fā)生的條件，返回NO可以阻止此手勢(shì)的發(fā)生或者此手勢(shì)不產(chǎn)生任何效果

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer;

是否允許多個(gè)手勢(shì)同時(shí)發(fā)生

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)
gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:
(UIGestureRecognizer *)otherGestureRecognizer;

UITapGestureRecognier敲擊，點(diǎn)擊手勢(shì)

設(shè)置屬性numberOfTapsRequired可以指定需要幾根手指才能觸發(fā)事件
numberOfTouchesRequired：可以設(shè)置需要敲擊幾次觸發(fā)事件

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

  // 設(shè)置代理
  tap.delegate = self;

  // 設(shè)置點(diǎn)擊次數(shù)觸發(fā)手勢(shì)事件
  tap.numberOfTapsRequired = 1;

  // 設(shè)置需要點(diǎn)擊的手指數(shù)
  tap.numberOfTouchesRequired = 1;

  [self.image addGestureRecognizer:tap];

UILongPressGestureRecongnizer長按

minimumPressDuration設(shè)置長按的最小間隔時(shí)間，也就是說按下開始和手指離開時(shí)的中間間隔，如果小于這個(gè)值則不會(huì)被認(rèn)為是長按操作
allowableMovement：長按過程中是否允許移動(dòng)

  UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];

  // 代理
  longPress.delegate = self;

  // 設(shè)置最小間隔時(shí)間, 手指按下與離開間隔時(shí)間
  longPress.minimumPressDuration = 1.0;

  // 按下過程中允許移動(dòng)的像素
  longPress.allowableMovement = 30;

  [self.image addGestureRecognizer:longPress];

UIPinchGestureRecognizer縮放手勢(shì)

scale: 設(shè)置縮放比例，相對(duì)于原來大小

 UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinch:)];

  // 代理
  pinch.delegate = self;

  // 設(shè)置縮放比例
  pinch.scale = 1.2;

  [self.image addGestureRecognizer:pinch];

UIRotationGestureRecognizer旋轉(zhuǎn)手勢(shì)

rotation: 旋轉(zhuǎn)弧度，要保證每次都在上一次位置開始旋轉(zhuǎn)，而不是回歸初始位置，必須要在動(dòng)作方法里將此值清零

- (void)setupRotation
{
  UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];

  // 設(shè)置代理
  rotation.delegate = self;

  [self.image addGestureRecognizer:rotation];
}

- (void)rotation:(UIRotationGestureRecognizer *)rotation
{
  // 旋轉(zhuǎn)角度
  CGFloat radian = rotation.rotation;

  self.image.transform = CGAffineTransformRotate(self.image.transform, radian);

  // 復(fù)位，保證每次都是在上一次位置開始轉(zhuǎn)，而不是每次都回歸初始位置再轉(zhuǎn)
  rotation.rotation = 0;
}

UISwipeGestureRecognizer輕掃, 手指按下然后在屏幕上滑動(dòng)

輕掃分四個(gè)方向（上下左右），并且如果要在一個(gè)控件上同時(shí)添加一個(gè)以上的輕掃動(dòng)作，必須對(duì)每個(gè)動(dòng)作添加一個(gè)對(duì)象。也就是說每個(gè)方向的動(dòng)作對(duì)應(yīng)一個(gè)對(duì)象。

direction: 指定輕掃動(dòng)作的方向

typedef NS_OPTIONS(NSUInteger, UISwipeGestureRecognizerDirection) {
  UISwipeGestureRecognizerDirectionRight = 1 << 0, // 從左向右
  UISwipeGestureRecognizerDirectionLeft = 1 << 1, // 從右向左
  UISwipeGestureRecognizerDirectionUp  = 1 << 2, // 從下往上
  UISwipeGestureRecognizerDirectionDown = 1 << 3 // 從上往下
};

 UISwipeGestureRecognizer *swipeUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

  // 設(shè)置代理
  swipeUp.delegate = self;

  // 修改方向, 從下往上
  swipeUp.direction = UISwipeGestureRecognizerDirectionUp;

  [self.image addGestureRecognizer:swipeUp];

  // 添加其他方向手勢(shì)
  UISwipeGestureRecognizer *swipeDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

  // 修改方向, 從下往上
  swipeDown.direction = UISwipeGestureRecognizerDirectionDown;

  [self.image addGestureRecognizer:swipeDown];

UIPanGestureRecognizer拖拽，按下拖動(dòng)控件操作

注意點(diǎn)：手勢(shì)的觸摸點(diǎn)locationInView和手勢(shì)的移動(dòng)點(diǎn)translationInView是不一樣的，前者是用locationInView取得是指手指在當(dāng)前控件中的坐標(biāo)，后者表示相對(duì)于父view的rect

  UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];

  // 設(shè)置代理
  pan.delegate = self;

  [self.image addGestureRecognizer:pan];

  // 手勢(shì)的觸摸點(diǎn)
  // CGPoint p = [pan locationInView:self.image];

  // 手勢(shì)的移動(dòng)點(diǎn)(每次移動(dòng)的位移點(diǎn))
  CGPoint transP = [pan translationInView:self.image];

  NSLog(@"%f, %f", transP.x, transP.y);

  self.image.transform = CGAffineTransformTranslate(self.image.transform, transP.x, transP.y);

  // 復(fù)位
  [pan setTranslation:CGPointZero inView:self.image];

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