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uigesture手势基础
#import @interface viewcontroller : uiviewcontroller{ //定义一个视图对象 uiimageview * _imageview; } @end
#import "viewcontroller.h" @interface viewcontroller () @end @implementation viewcontroller - (void)viewdidload { [super viewdidload]; // do any additional setup after loading the view, typically from a nib. //加载图像对象,从本地加载到内存 uiimage * image =[uiimage imagenamed:@"17_2.png"]; //创建图像视图 _imageview = [[uiimageview alloc]init]; //将图像视图的图像赋值 _imageview.image = image; _imageview.frame =cgrectmake(50, 80, 200, 300); [self.view addsubview:_imageview]; //开启交互事件响应开关 //yes:可以响应交互事件 //no:不能接受响应事件,默认值为no; _imageview.userinteractionenabled=yes; //创建一个点击手势对象 //uitapgesturerecognizer:点击手势类 //功能:识别点击手势事件 //p1:响应事件的拥有者对象,self表示当前视图控制器 //p2:响应事件的函数 uitapgesturerecognizer * taponeges = [[uitapgesturerecognizer alloc]initwithtarget:self action:@selector(taponeact:)]; //表示手势识别事件的事件类型:几次点击时触发 //默认值为1 taponeges.numberoftapsrequired=1; // taponeges.numberoftapsrequired=2; //表示几个手指点击时触发此事件函数 //默认值为1 taponeges.numberoftouchesrequired=1; //将点击事件添加到视图中,视图即可响应事件 [_imageview addgesturerecognizer:taponeges]; uitapgesturerecognizer * taptwoges = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(taptwoges:)]; taptwoges.numberoftapsrequired=2; taptwoges.numberoftouchesrequired=1; [_imageview addgesturerecognizer:taptwoges]; //当单击操作遇到双击操作时,单击操作失效 [taponeges requiregesturerecognizertofail:taptwoges]; } //事件响应函数,单击操作 //参数手势点击事件对象 -(void) taponeact:(uitapgesturerecognizer*)tap{ nslog(@"单击操作!"); //获取手势监控的视图对象 uiimageview * imageview = (uiimageview*)tap.view; //开始动画过程 [uiview beginanimations:nil context:nil]; //设置动画过度时间 [uiview setanimationduration:2]; imageview.frame=cgrectmake(0, 0, 320, 568); //结束动画过程 [uiview commitanimations]; } //双击操作 -(void)taptwoges:(uitapgesturerecognizer*)tap{ nslog(@"双击操作"); [uiview beginanimations:nil context:nil]; [uiview setanimationduration:1]; _imageview.frame =cgrectmake(50, 80, 200, 300); [uiview commitanimations]; } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of any resources that can be recreated. } @end
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