在touchMoved方法中

UITouch *touch = [touch anyObject];
CGPoint curP = [touch locationInView:self];
CGPoint preP = [touch previousLocationInView:self];
CGFloat offsetX = curP.x - preP.x;
//平移
self.transform = CGAffineTransformTranslate(self.transform, offsetX, 0);

如果采用pan手勢(shì)平移, 則在UIPangestureRecognizer響應(yīng)事件中

CGPoint transP = [pan translationInView:self.imageV];
self.imageV.transform = CGAffineTransformTranslate(self.imageV, transP.x, transP.y);

//讓它相對(duì)于上一次復(fù)位
[pan setTranslation:CGPointZero inView:self.imageV];

如果采用pinch想要實(shí)現(xiàn)捏合縮放, 則在UIPinchRecognizer響應(yīng)事件中

self.imageV.transform = CGAffineTransformScale(self.imageV.transform, pinch.scale, pinch.scale);
//復(fù)位
[pinch setScale:1];

想要旋轉(zhuǎn)也是同理, 在UIRotationGestureRecognizer響應(yīng)事件中,

 self.imageV.transform = CGAffineTransformRotate(self.imageV.transform, rota.rotation);
//復(fù)位
[rota setRotation:0];

如果既想捏合又想旋轉(zhuǎn), 如果只是簡(jiǎn)單地添加兩種手勢(shì), 會(huì)發(fā)現(xiàn), 先做縮放或先做旋轉(zhuǎn), 那另一種就不能同時(shí)做了, 此時(shí)要分別對(duì)兩種手勢(shì)添加代理, UIGestureRecognizerDelegate, 并實(shí)現(xiàn)一個(gè)協(xié)議方法:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    return YES;
}

讓系統(tǒng)知道我們需要同時(shí)支持多種手勢(shì)

當(dāng)我們要實(shí)現(xiàn)view的某些地方可以響應(yīng)手勢(shì), 某些地方不響應(yīng)

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{

CGPoint curP = [touch locationInView:self.imageV];
if(curP.x > self.imageV.frame.width * .5){
      return YES;
}
else{
    return NO;
}
}