如何在 xamarin.forms 中调整图像大小? [英] How to resize images in xamarin.forms?

问题描述

我正在研究 xamarin.forms.我必须从图库中选择图像，然后调整它们的大小，然后将它们上传到服务器上.但我不知道如何以给定的特定尺寸调整所选图像的大小?请更新我如何做到这一点?

I am working on xamarin.forms. I have to select images from gallery and then resize them and then upload them on server. But I don't know how I can resize selected image in a given particular size? Please update me how I can do this?

推荐答案

这可以与流一起使用(如果您使用的是媒体插件 https://github.com/jamesmontemagno/MediaPlugin) 或标准字节数组.

This can be used with a stream (if you're using the Media Plugin https://github.com/jamesmontemagno/MediaPlugin) or standard byte arrays.

// If you already have the byte[]
byte[] resizedImage = await CrossImageResizer.Current.ResizeImageWithAspectRatioAsync(originalImageBytes, 500, 1000);

// If you have a stream, such as:
// var file = await CrossMedia.Current.PickPhotoAsync(options);
// var originalImageStream = file.GetStream();
byte[] resizedImage = await CrossImageResizer.Current.ResizeImageWithAspectRatioAsync(originalImageStream, 500, 1000);

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