ios - 从 UIImagePickerController 返回的图像超出图像边缘，添加黑条
<p><p>我让用户从 UIImagePickerController 中选择一个图像，然后当我访问该图像时，它有一个黑条。请注意，图像没有被裁剪，图像选择器实际上超出了不存在像素的图像边界并添加了空白区域。</p>
<p>我的代码:</p>
<pre><code>@IBAction func selectImageButt(_ sender: Any) {
let imagepicker = UIImagePickerController()
imagepicker.allowsEditing = true
imagepicker.sourceType = .photoLibrary
imagepicker.delegate = self
present(imagepicker, animated: true)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: ) {
if let image = info as? UIImage {
testImageView.image = image
}
picker.dismiss(animated: true)
}
</code></pre>
<p>结果如下:</p>
<p> <a href="/image/PgYJ7.jpg" rel="noreferrer noopener nofollow"><img src="/image/PgYJ7.jpg" alt="enter image description here"/></a> </p>
<p>注意我已经尝试将 ImageView 的 <code>contentMode</code> 更改为缩放以填充以及方面填充(不适合)。我不知道为什么将黑条添加为图像本身的一部分。有人可以帮忙吗？
<a href="/image/wsrIY.jpg" rel="noreferrer noopener nofollow"><img src="/image/wsrIY.jpg" alt="enter image description here"/></a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>如果裁剪后的图像在原点之外，我已经通过使用原始图像解决了这个问题</p>
<pre><code>guard let selectedImage = info[.editedImage] as? UIImage else {
fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
}
var image = selectedImage
if let cropRect = info[.cropRect] as? CGRect {
if cropRect.origin.y < 0 {
guard let imageOrigin = info[.originalImage] as? UIImage else {
fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
}
image = imageOrigin
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 从 UIImagePickerController 返回的图像超出图像边缘，添加黑条，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/52067802/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/52067802/
</a>
</p>
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