让用户在iOS应用中裁剪照片 [英] Let User Crop Photo in iOS App

问题描述

关于在iPhone应用程序中裁剪图像/照片有几个问题（和答案）。

There are several questions (and answers) concerning cropping of images/photos within an iPhone app.

但我找不到涵盖常见任务的答案为用户提供一个矩形，可以通过捏合手势调整大小，让他调整区域大小。

But I couldn't find an answer covering the common task of giving the user a rectangle which can be resized with a pinch gesture to letting him resize the area to cut.

您可以在许多应用程序中找到此功能（Instagram，Twitter，等...）最有可能将用户照片剪切成正确的比例。所以我想有很多人都有同样的问题。

You can find this functionality in many apps (Instagram, Twitter, etc...) most likely to cut a user photo to the right proportions. So I guess there are many people with the same problem.

有没有人有代码或教程来说明如何完成这项任务？

Does anyone have code or tutorials to show how this task can be done?

推荐答案

尝试以下链接，例如项目：

Try Below links for example project :

https://github.com/iosdeveloper/ImageCropper

https://github.com/barrettj/BJImageCropper

https://github.com/ardalahmet/SSPhotoCropperViewController

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