UIImageView.Image通过MonoTouch邮件附件 [英] UIImageView.Image to mail attachment with MonoTouch

问题描述

我是MonoTouch的新手，我正在尝试发送一封带有图片的电子邮件作为附件，用户可以从相机上对其进行驯服或从画廊中进行挑选.

I am new to MonoTouch and I am trying to send an email with an image as attachment that a user will tame from camera or pick from gallery.

我已经创建了程序，并且程序可以正常运行(我有一个imageview控制器，它将图像从uiimagepicker加载到imageview.然后我调用MFMailComposeViewController，但是我不知道如何将图像从imageview传递到addAttachmentdata方法.

I have created the program and it runs correctly (I have an imageview controller which loads an image from uiimagepicker to imageview. Then I call MFMailComposeViewController but I don't know how to pass the image from imageview to addAttachmentdata method.

我想首先我必须将imageview中的图像另存为文件，但是我不知道该怎么办，也找不到文档.

I suppose first I have to save the image from imageview as a file but I don't know how to do it and I can't find documentation for it.

推荐答案

首先，您需要将UIImage变成NSData，例如使用AsPNG或AsJPG，然后为图像使用正确的 MIME 类型.这是一个示例:

First you need to turn the UIImage into an NSData, e.g. using AsPNG or AsJPG, then use the right MIME type for the image. Here's an example:

MFMailComposeViewController email = new MFMailComposeViewController ();
// any UIImage will do
UIImage img = UIImage.FromFile (".../anyimage.png");
email.AddAttachmentData (img.AsPNG (), "image/png", "image.png");
email.SetSubject ("Photo from my iPhone");
email.SetMessageBody ("Here's the attachment!", false);
controller.PresentModalViewController (email, false);

注意:"image.png"是

Note: the "image.png" is a suggested file name given to the recipient email software (i.e. it's not a local file in your device and does not need to match anything that exists).

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