Question

在尝试使用Android编程中的电子邮件附加生成的QR码作为附件时，我遇到了一些问题。这是我生成QR码然后调用发送电子邮件的部分：

@SuppressLint("NewApi")
private void generateQR() {
    // Find screen size
    WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE);
    Display display = manager.getDefaultDisplay();
    Point point = new Point();
    display.getSize(point);
    int width = point.x;
    int height = point.y;

    // Encode with a QR Code image
    QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrInputText, null,
            Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(),
            smallerDimension);
    try {
        Bitmap bitmap = qrCodeEncoder.encodeAsBitmap();
        ImageView myImage = (ImageView) findViewById(R.id.ivImage);
        myImage.setImageBitmap(bitmap);     

        new SendEmailAsyncTask().execute(bitmap);
    } catch (WriterException e) {
        e.printStackTrace();
    }
}

class SendEmailAsyncTask extends AsyncTask <Bitmap, Void, Boolean> {

     @Override
  protected Boolean doInBackground(Bitmap... params) {
     GMailSender sender = new GMailSender("something@gmail.com","pwd");
        try {
      sender.sendMail("Successful Event Registration QR Code",params[0], "something@gmail.com", "something@gmail.com");
                System.out.println("send");
        } catch (Exception e) {
         System.err.println("err"+e);

                Log.e("SendMail", e.getMessage(), e);
        }
   return null;
  }
}

但是，我在sendMail上收到错误消息：

The method sendMail(String, String, String, String) in the type GMailSender is not applicable for the arguments (String, Bitmap, String, String)

因为之前当我替换params [0]时，它之前是一个字符串。但是我必须将生成的QR码位图传递到电子邮件内容中。有什么想法吗？

提前致谢。

更新

Bitmap bitmap = qrCodeEncoder.encodeAsBitmap();
        ImageView myImage = (ImageView) findViewById(R.id.ivImage);
        myImage.setImageBitmap(bitmap);
        counterQR++;    

        String path = Environment.getExternalStorageDirectory().toString();
        OutputStream fOut = null;
        File file = new File(path, "eNeighbourhood"+counterQR+".jpg"); 
        fOut = new FileOutputStream(file);

        Bitmap pictureBitmap = getImageBitmap(bitmap); // obtaining the Bitmap
        pictureBitmap.compress(Bitmap.CompressFormat.JPEG, 85, fOut);
        fOut.flush();
        fOut.close(); 

        MediaStore.Images.Media.insertImage(getContentResolver(),file.getAbsolutePath(),file.getName(),file.getName());

使用上面的代码，我试图将位图转换为文件，以便我也可以通过获取file参数来修改sendMail（）。但是，我发现getAmageBitmap未定义为MainActivity

Android发送带附件的电子邮件

0 个答案: