Question

以下代码在uiimageview上拍摄照片和显示。 pitcure填满了整个uiimageview。如何使图像显得更小，以便保存的图像不是整个屏幕。我想在拍摄的照片周围有一个边框。矩形边框。谢谢。

@IBAction func Camera(_ sender: AnyObject) {

    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)}}

            func imagePickerController(_ picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject: AnyObject]!){
                cameraScreen.image = image
                self.dismiss(animated: true, completion: nil);
                screenView = UIImageView()

                screenView.frame = CGRect(x:0, y: 0, width: self.view.frame.width, height: self.view.frame.height)





                UIGraphicsBeginImageContext(self.cameraScreen.frame.size)
                self.view.drawHierarchy(in: self.view.frame, afterScreenUpdates: true)



}

Answer 1

这是一个必须在didFinishPickingImage完成处理程序中调用的方法。

<?php
    $picture_container = simplexml_load_file('data.xml');
    echo $picture_container->[month-name[0]]->[channel-name[1]]->title;
?>

此方法将改变图像的大小。

Answer 2

更新了Kirti Parghi对Swift 3的回答

func resizeImage(image: UIImage, newWidth: CGFloat) -> UIImage? {

    let scale = newWidth / image.size.width
    let newHeight = image.size.height * scale
    UIGraphicsBeginImageContext(CGSize(width: newWidth, height: newHeight))
    image.draw(in: CGRect(x: 0, y: 0, width: newWidth, height: newHeight))
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return newImage
}

如何在uiimage选择器控制器中更改图像大小

2 个答案: