首先新建一個(gè)基于Sigle view Application的項(xiàng)目，名為GestureTest;我的項(xiàng)目結(jié)構(gòu)如下：

往viewController.xib文件里拖動(dòng)一個(gè)imageView,并使覆蓋整個(gè)屏幕，改動(dòng)屬性為：

viewController.h文件：

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[cpp]viewplaincopy

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1.?????#import?<UIKit/UIKit.h>??

2.???????

3.?????@interface?ViewController?:?UIViewController{??

4.?????????IBOutlet?UIImageView?*imageView;??

5.?????}??

6.?????@property?(nonatomic,retain)IBOutlet?UIImageView?*imageView;??

7.?????@end??

并使xib文件里的imageView與之連接；

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然后是viewController.m文件的實(shí)現(xiàn)部分：

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[cpp]viewplaincopy

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1.?????@synthesize?imageView;??

2.???????

3.?????CGFloat?lastScaleFactor=1;//放大、縮小??

4.?????CGFloat??netRotation;//旋轉(zhuǎn)??

5.?????CGPoint?netTranslation;//平衡??

6.?????NSArray?*images;//圖片數(shù)組??

7.?????int?imageIndex=0;//數(shù)組下標(biāo)??

8.???????

9.?????-?(void)viewDidLoad??

10.???{??

11.???????//1、創(chuàng)建手勢(shì)實(shí)例，并連接方法handleTapGesture,點(diǎn)擊手勢(shì)??

12.???????UITapGestureRecognizer?*tapGesture=[[UITapGestureRecognizer?alloc]initWithTarget:self?action:@selector(handleTapGesture:)];??

13.???????//設(shè)置手勢(shì)點(diǎn)擊數(shù),雙擊：點(diǎn)2下??

14.???????tapGesture.numberOfTapsRequired=2;??

15.???????//?imageView添加手勢(shì)識(shí)別??

16.???????[imageView?addGestureRecognizer:tapGesture];??

17.???????//釋放內(nèi)存??

18.???????[tapGesture?release];??

19.?????????

20.???????//2、手勢(shì)為捏的姿勢(shì):按住option按鈕配合鼠標(biāo)來(lái)做這個(gè)動(dòng)作在虛擬器上??

21.???????UIPinchGestureRecognizer?*pinchGesture=[[UIPinchGestureRecognizer?alloc]initWithTarget:self?action:@selector(handlePinchGesture:)];??

22.???????[imageView?addGestureRecognizer:pinchGesture];//imageView添加手勢(shì)識(shí)別??

23.???????[pinchGesture?release];??

24.?????????

25.???????//3、旋轉(zhuǎn)手勢(shì):按住option按鈕配合鼠標(biāo)來(lái)做這個(gè)動(dòng)作在虛擬器上??

26.???????UIRotationGestureRecognizer?*rotateGesture=[[UIRotationGestureRecognizer?alloc]initWithTarget:self?action:@selector(handleRotateGesture:)];??

27.???????[imageView?addGestureRecognizer:rotateGesture];??

28.???????[rotateGesture?release];??

29.?????????

30.???????//4、拖手勢(shì)??

31.???????UIPanGestureRecognizer?*panGesture=[[UIPanGestureRecognizer?alloc]initWithTarget:self?action:@selector(handlePanGesture:)];??

32.??????//?[imageView?addGestureRecognizer:panGesture];??

33.???????[panGesture?release];??

34.?????????

35.???????//5、劃動(dòng)手勢(shì)??

36.???????images=[[NSArray?alloc]initWithObjects:@"cell.jpg",@"heihua.jpg",@"xuanyi.jpg",?nil];??

37.???????//右劃??

38.???????UISwipeGestureRecognizer?*swipeGesture=[[UISwipeGestureRecognizer?alloc]initWithTarget:self?action:@selector(handleSwipeGesture:)];??

39.???????[imageView?addGestureRecognizer:swipeGesture];??

40.???????[swipeGesture?release];??

41.???????//左劃??

42.???????UISwipeGestureRecognizer?*swipeLeftGesture=[[UISwipeGestureRecognizer?alloc]initWithTarget:self?action:@selector(handleSwipeGesture:)];??

43.???????swipeGesture.direction=UISwipeGestureRecognizerDirectionLeft;//不設(shè)置黑夜是右??

44.???????[imageView?addGestureRecognizer:swipeLeftGesture];??

45.???????[swipeLeftGesture?release];??

46.?????????

47.???????//6、長(zhǎng)按手勢(shì)??

48.???????UILongPressGestureRecognizer?*longpressGesutre=[[UILongPressGestureRecognizer?alloc]initWithTarget:self?action:@selector(handleLongpressGesture:)];??

49.???????//長(zhǎng)按時(shí)間為1秒??

50.???????longpressGesutre.minimumPressDuration=1;??

51.???????//允許15秒中運(yùn)動(dòng)??

52.???????longpressGesutre.allowableMovement=15;??

53.???????//所需觸摸1次??

54.???????longpressGesutre.numberOfTouchesRequired=1;??

55.???????[imageView?addGestureRecognizer:longpressGesutre];??

56.???????[longpressGesutre?release];??

57.?????????

58.???????[super?viewDidLoad];??

59.???????//?Do?any?additional?setup?after?loading?the?view,?typically?from?a?nib.??

60.???}??

61.???//雙擊屏幕時(shí)會(huì)調(diào)用此方法,放大和縮小圖片??

62.???-(IBAction)handleTapGesture:(UIGestureRecognizer*)sender{??

63.???????//判斷imageView的內(nèi)容模式是否是UIViewContentModeScaleAspectFit,該模式是原比例，按照?qǐng)D片原時(shí)比例顯示大小??

64.???????if(sender.view.contentMode==UIViewContentModeScaleAspectFit){??

65.???????????//把imageView模式改成UIViewContentModeCenter，按照?qǐng)D片原先的大小顯示中心的一部分在imageView??

66.???????????sender.view.contentMode=UIViewContentModeCenter;??

67.???????}else{??

68.???????????sender.view.contentMode=UIViewContentModeScaleAspectFit;??

69.???????}??

70.???}??

71.???//捏的手勢(shì)，使圖片放大和縮小，捏的動(dòng)作是一個(gè)連續(xù)的動(dòng)作??

72.???-(IBAction)handlePinchGesture:(UIGestureRecognizer*)sender{??

73.???????//得到sender捏手勢(shì)的大小??

74.???????CGFloat?factor=[(UIPinchGestureRecognizer*)sender?scale];??

75.???????if(factor>1){??

76.???????????//圖片放大??

77.???????????sender.view.transform=CGAffineTransformMakeScale(lastScaleFactor+(factor-1),?(lastScaleFactor+(factor-1)));??

78.??????????????????????????????????????????????????????????????

79.???????}else{??

80.???????????//縮小??

81.???????????sender.view.transform=CGAffineTransformMakeScale(lastScaleFactor*factor,?lastScaleFactor*factor);??

82.??????????????????????????????????????????????????????????????

83.???????}??

84.???????//狀態(tài)是否結(jié)束，如果結(jié)束保存數(shù)據(jù)??

85.???????if(sender.state==UIGestureRecognizerStateEnded){??

86.???????????if(factor>1){??

87.???????????????lastScaleFactor+=(factor-1);??

88.???????????}else{??

89.???????????????lastScaleFactor*=factor;??

90.???????????}??

91.???????}??

92.???}??

93.???//旋轉(zhuǎn)手勢(shì)??

94.???-(IBAction)handleRotateGesture:(UIGestureRecognizer*)sender{??

95.???????//浮點(diǎn)類型，得到sender的旋轉(zhuǎn)度數(shù)??

96.???????CGFloat?rotation=[(UIRotationGestureRecognizer*)sender?rotation];??

97.???????//旋轉(zhuǎn)角度CGAffineTransformMakeRotation??

98.???????CGAffineTransform?transform=CGAffineTransformMakeRotation(rotation+netRotation);??

99.???????//改變圖像角度??

100.? ????sender.view.transform=transform;??

101.? ????//狀態(tài)結(jié)束，保存數(shù)據(jù)??

102.? ????if(sender.state==UIGestureRecognizerStateEnded){??

103.? ????????netRotation+=rotation;??

104.? ????}??

105.? ???????

106.? }??

107.? //拖手勢(shì)??

108.? -(IBAction)handlePanGesture:(UIGestureRecognizer*)sender{??

109.? ????//得到拖的過(guò)程中的xy坐標(biāo)??

110.? ????CGPoint?translation=[(UIPanGestureRecognizer*)sender?translationInView:imageView];??

111.? ????//平移圖片CGAffineTransformMakeTranslation??

112.? ????sender.view.transform=CGAffineTransformMakeTranslation(netTranslation.x+translation.x,?netTranslation.y+translation.y);??

113.? ????//狀態(tài)結(jié)束，保存數(shù)據(jù)??

114.? ????if(sender.state==UIGestureRecognizerStateEnded){??

115.? ????????netTranslation.x+=translation.x;??

116.? ????????netTranslation.y+=translation.y;??

117.? ????}??

118.? ??????

119.? }??

120.? //劃動(dòng)手勢(shì)??

121.? -(IBAction)handleSwipeGesture:(UIGestureRecognizer*)sender{??

122.? ????//劃動(dòng)的方向??

123.? ????UISwipeGestureRecognizerDirection?direction=[(UISwipeGestureRecognizer*)?sender?direction];??

124.? ????//判斷是上下左右??

125.? ????switch?(direction)?{??

126.? ????????case?UISwipeGestureRecognizerDirectionUp:??

127.? ????????????NSLog(@"up");??

128.? ????????????break;??

129.? ????????case?UISwipeGestureRecognizerDirectionDown:??

130.? ????????????NSLog(@"down");??

131.? ????????????break;??

132.? ????????case?UISwipeGestureRecognizerDirectionLeft:??

133.? ????????????NSLog(@"left");??

134.? ????????????imageIndex++;//下標(biāo)++??

135.? ????????????break;??

136.? ????????case?UISwipeGestureRecognizerDirectionRight:??

137.? ????????????NSLog(@"right");??

138.? ????????????imageIndex--;//下標(biāo)--??

139.? ????????????break;??

140.? ????????default:??

141.? ????????????break;??

142.? ????}??

143.? ????//得到不越界不<0的下標(biāo)??

144.? ????imageIndex=(imageIndex<0)?([images?count]-1):imageIndex%[images?count];??

145.? ????//imageView顯示圖片??

146.? ????imageView.image=[UIImage?imageNamed:[images?objectAtIndex:imageIndex]];??

147.? ??????

148.? }??

149.? //長(zhǎng)按手勢(shì)??

150.? -(IBAction)handleLongpressGesture:(UIGestureRecognizer*)sender{??

151.? ????//創(chuàng)建警告??

152.? ????UIActionSheet?*actionSheet=[[UIActionSheet?alloc]initWithTitle:@"Image?options"?delegate:self?cancelButtonTitle:nil?destructiveButtonTitle:nil?otherButtonTitles:@"Save?Image",@"Copy",?nil];??

153.? ????//當(dāng)前view顯示警告??

154.? ????[actionSheet?showInView:self.view];??

155.? ????[actionSheet?release];??

156.? }??

157.? -(void)dealloc{??

158.? ????[images?release];??

159.? ????[imageView?release];??

160.? ????[super?dealloc];??

161.? } ?

總結(jié)

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