转换Android.Graphics.Bitmap到图像

本文介绍了转换Android.Graphics.Bitmap到图像的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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 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(); } screenshotpress(Bitmap.CompressFormat.JPEG, 30, fileOutputStream); try { fileOutputStream.flush(); fileOutputStream.close(); } catch (IOException e) { e.printStackTrace(); } return screenshot; }