android - 将图像从 webview 保存到某个文件夹

Question

我使用 Google chart api 在 android 中使用 webview 生成图表。现在我的下一个要求是将该图像保存到某个本地存储中并通过电子邮件和彩信发送图像。请帮助我完成这项工作。

谢谢尼尚

Answer 1

WebView w = new WebView(this);
 //Loads the url
 w.loadUrl("http://www.yahoo.com";);
 //After loading completely, take its picture
 Picture picture = w.capturePicture();
 //Create a new canvas
 Canvas mCanvas = new Canvas();
 //Draw the Picture into the Canvas
 picture.draw(mCanvas);
 //Create a Bitmap
 Bitmap sreenshot = Bitmap.createBitmap(picture.getWidth(),
 picture.getHeight(),Config.ARGB_8888);
 //copy the content fron Canvas to Bitmap
 mCanvas.drawBitmap(mBitmapScreenshot, 0, 0, null);

 //Save the Bitmap to local filesystem
 if(sreenshot != null) {
        ByteArrayOutputStream mByteArrayOpStream = new
 ByteArrayOutputStream();
         screenshot.compress(Bitmap.CompressFormat.JPEG, 90,
 mByteArrayOpStream);
         try {
                 fos = openFileOutput("yahoo.jpg",
 MODE_WORLD_WRITEABLE);
                 fos.write(mByteArrayOpStream.toByteArray());
                 fos.close();
         } catch (FileNotFoundException e) {
                 e.printStackTrace();
         } catch (IOException e) {
                 e.printStackTrace();
         }
 }

要通过电子邮件发送图像，您可以通过此 question
和 MMS