iOS开发从入门到精通--UIGesture手势基础

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