iOS 拖动手势

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iOS 手势中还包含了一种--拖动

上节我们简单介绍了旋转手势：http://blog.csdn.net/lwjok2007/article/details/50835884

这节我们简单介绍一下拖动手势

UIPanGestureRecognizer

同样先建项目

起名 testPan

在默认生成的ViewController中写代码

创建一个ImageView 我们来拖动他

    UIImageView *imageV;

创建 ImageView 和手势

UIPanGestureRecognizer

- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    imageV = [[UIImageView alloc] initWithFrame:CGRectMake(10, 120, 120, 120)];    imageV.image = [UIImage imageNamed:@"3.jpeg"];    [self.view addSubview:imageV];        UIPanGestureRecognizer *panGR = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGRAct:)];    [imageV setUserInteractionEnabled:YES];    [imageV addGestureRecognizer:panGR];        }

实现手势对应的方法

- (void)panGRAct: (UIPanGestureRecognizer *)rec{            CGPoint point = [rec translationInView:self.view];    NSLog(@"%f,%f",point.x,point.y);    rec.view.center = CGPointMake(rec.view.center.x + point.x, rec.view.center.y + point.y);    [rec setTranslation:CGPointMake(0, 0) inView:self.view];}

运行代码看看拖动图片看看是不是在动

好了代码上传到群空间有兴趣的可以下载看看

代码：【60309拖动手势Pan.zip】

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