UIImageView上的UIGestureRecognizer | userInteractionEnabled

本文介绍了UIImageView上的UIGestureRecognizer的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个 UIImageView ，我希望能够调整大小和旋转等。

I have a UIImageView, which I want to be able to resize and rotate etc.

可以 UIGestureRecognizer 被添加到 UIImageView ？

我会想要在运行时创建的 UIImageView 添加一个旋转和捏合识别器。

I would want to add a rotate and pinch recognizer to a UIImageView which would be created at runtime.

如何添加这些识别器？

推荐答案

检查 userInteractionEnabled 是否 UIImageView 上的> YES 。然后你可以添加一个手势识别器。

Check that userInteractionEnabled is YES on the UIImageView. Then you can add a gesture recognizer.

imageView.userInteractionEnabled = YES;
UIPinchGestureRecognizer *pgr = [[UIPinchGestureRecognizer alloc]
    initWithTarget:self action:@selector(handlePinch:)];
pgr.delegate = self;
[imageView addGestureRecognizer:pgr];
[pgr release];
:
:
- (void)handlePinch:(UIPinchGestureRecognizer *)pinchGestureRecognizer
{
  //handle pinch...
}

这篇关于UIImageView上的UIGestureRecognizer的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！