Xamarin.Forms Android将图像保存到图库 [英] Xamarin.Forms Android save image to gallery

问题描述

我有一条流，这是拍照的结果.我想将该照片保存到用户图库.

I have a stream which is the result of taking a photo. I want to save that photo to the users Gallery.

我已经尝试了所有方法，但是没有花...我要保存的类是普通的C#类-它不继承任何android类型，但是可以在必要时做到(尽管可以激发意图-尽管我尝试了这个，结果又碰到了另一个兔子洞)

I have tried all manner of things but nothing takes... The class I am saving is a plain C# class - it does not inherit form any android types but that could be done if necessary (to fire an intent perhaps - though I tried this and it ended up another rabbit hole)

我已经尝试过了:

try{
    using (FileStream fs = new FileStream(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + _name, FileMode.OpenOrCreate))
    {
        fs.Write(bytes, 0, bytes.Length);
    }
} catch (Exception ex) {
    Console.WriteLine (ex.Message);
}

还有:

        if (_filename.ToLower ().Contains (".jpg") || _filename.ToLower ().Contains (".png")) {
            stream.Position = 0;
            var bitmap = BitmapFactory.DecodeStream (stream);

            var finalStream = new MemoryStream ();

            bitmap.Compress (Bitmap.CompressFormat.Jpeg, 25, finalStream);
            bitmap = null;

            finalStream.Position = 0;

            var path2 = Environment.GetFolderPath (Environment.SpecialFolder.MyPictures);
            var filename2 = System.IO.Path.Combine (path2, _filename);

            using (var fileStream = File.Create (filename2)) {
                finalStream.Seek (0, SeekOrigin.Begin);
                finalStream.CopyTo (fileStream);
                fileStream.Close ();

                finalStream.Dispose ();
                stream.Dispose ();
                fileStream.Dispose ();
                GC.Collect ();
            }
            return;
        }

我认为这将是一件容易的事！嗯...

I thought this would be an easy task! meh...

有帮助吗?

推荐答案

使用 MediaStore ContentProvider . MediaStore.Images.Media 有几种插入方法，您可以可以用来向图库添加内容.

Use the MediaStore ContentProvider. MediaStore.Images.Media has several Insert methods you can use to add content to the gallery.

这篇关于Xamarin.Forms Android将图像保存到图库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！