将 Android.Graphics.Bitmap 转换为图像 [英] Convert Android.Graphics.Bitmap to Image

问题描述

我正在尝试按如下方式获取视图的屏幕截图.我正在获取位图，我需要将其转换为图像以添加到 PDF 生成器中.

I am trying to get screenshot of the view as follows. I am getting Bitmap and I need to convert it to to Image to add into PDF generator.

using (var screenshot = Bitmap.CreateBitmap(200, 100,Bitmap.Config.Argb8888))
{
    var canvas = new Canvas(screenshot);
    rootView.Draw(canvas);

    using (var screenshotOutputStream = new FileStream(screenshotPath,System.IO.FileMode.Create))
    {
        screenshot.Compress(Android.Graphics.Bitmap.CompressFormat.Png, 90, screenshotOutputStream);
        screenshotOutputStream.Flush();
        screenshotOutputStream.Close();
    }
}

我的问题是如何将 Android.Graphics.Bitmap -->screenshot 转换为 Image ?

My question is how to convert Android.Graphics.Bitmap -->screenshot to Image ?

我想用来自 BitMap 的 Image 本身替换 url.

I want to replace the url with Image itself which comes from BitMap.

String imageUrl = "myURL";
Image image = Image.GetInstance (new Uri (imageUrl));
document.Add(image);

推荐答案

你可以使用这个方法:

public Bitmap getScreenshotBmp() {


    FileOutputStream fileOutputStream = null;

    File path = Environment
            .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);

    String uniqueID = UUID.randomUUID().toString();

    File file = new File(path, uniqueID + ".jpg");
    try {
        fileOutputStream = new FileOutputStream(file);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    screenshot.compress(Bitmap.CompressFormat.JPEG, 30, fileOutputStream);

    try {
        fileOutputStream.flush();
        fileOutputStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return screenshot;
 }

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