转换Android.Graphics.Bitmap到图像 [英] Convert Android.Graphics.Bitmap to Image

问题描述

我想获得的视图的屏幕截图如下。我得到位图，我需要将其转换为到图像添加到PDF生成。

 使用（VAR截图= Bitmap.CreateBitmap（200，100，Bitmap.Config.Argb8888））
{
    VAR帆布=新的Canvas（截图）;
    rootView.Draw（画布）;    使用（VAR screenshotOutputStream =新的FileStream（screenshotPath，System.IO.FileMode.Create））
    {
        screenshot.Com preSS（Android.Graphics.Bitmap.Com pressFormat.Png，90，screenshotOutputStream）;
        screenshotOutputStream.Flush（）;
        screenshotOutputStream.Close（）;
    }
}
 

我的问题是如何转换 Android.Graphics.Bitmap - ＆GT;屏幕截图到图片

我要替换图像本身它来自位图的网址。

 字符串图片网址=myURL;
形象画像= Image.GetInstance（新的URI（图片网址））;
document.Add（图片）;
 

解决方案

您可以使用此方法：

 公共位图getScreenshotBmp（）{
    FileOutputStream中的FileOutputStream = NULL;    文件路径=环境
            .getExternalStoragePublicDirectory（Environment.DIRECTORY_PICTURES）;    字符串UNIQUEID = UUID.randomUUID（）的toString（）。    档案文件=新的文件（路径，唯一ID +.JPG）;
    尝试{
        的FileOutputStream =新的FileOutputStream（文件）;
    }赶上（FileNotFoundException异常五）{
        e.printStackTrace（）;
    }    screenshot.com preSS（Bitmap.Com pressFormat.JPEG，30，FileOutputStream中）;    尝试{
        fileOutputStream.flush（）;
        fileOutputStream.close（）;
    }赶上（IOException异常五）{
        e.printStackTrace（）;
    }
    返回截图;
 }
 

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();
    }
}

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

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);

解决方案

You can use this method:

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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