Question

我正在开发一个Android项目，我从相机点击图片或从图库中选择，我需要将该图像作为邮件中的附件发送。这是我从相机enter code here

获取照片的代码

public void launchCamera(View view){
    gallery.setEnabled(false);
    String fileName = "abc.jpg";
    ContentValues values = new ContentValues();
    values.put(MediaStore.Images.Media.TITLE, fileName);
    values.put(MediaStore.Images.Media.DESCRIPTION," XYZ");
    imageUri = getContentResolver().insert(
            MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    Intent intent =new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

    startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
}

以下是从图库中获取图片的代码

public void launchGallery(View view){
    cameraButton.setEnabled(false);
    Intent intent = new Intent(
        Intent.ACTION_PICK,
        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    intent.setType("image/*");
    startActivityForResult(intent,PICK_IMAGE_REQUEST);

这是onActivityResult函数

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        String imageId = convertImageUriToFile( imageUri,CameraActivity);
    }
    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {

        Uri uri = data.getData();
        String[] filePathColumn = {MediaStore.Images.Media.DATA};
        Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
        cursor.moveToFirst();
        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        filep = cursor.getString(columnIndex);
        cursor.close();
    }
}
public  String convertImageUriToFile ( Uri imageUri, Activity activity ) {

    Cursor cursor = null;
    int imageID = 0;

    try {
        /*********** Which columns values want to get *******/
        String[] proj = {
                MediaStore.Images.Media.DATA,
                MediaStore.Images.Media._ID,
                MediaStore.Images.Thumbnails._ID,
                MediaStore.Images.ImageColumns.ORIENTATION
        };

        cursor = getContentResolver().query(imageUri, proj, null, null, null);
        int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);
        int columnIndexThumb = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);
        int file_ColumnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

        int thumbID = 0;
        if (cursor.moveToFirst()) {
            imageID = cursor.getInt(columnIndex);
            thumbID = cursor.getInt(columnIndexThumb);
            filep = cursor.getString(file_ColumnIndex);
        }
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
    return filep;
}

发送电子邮件的代码是

public class SendMail
{
    private Context context;
    private ProgressDialog progressDialog;
    public void sending(String filepath, String rec, String bod)
    {
        // Recipient's email ID needs to be mentioned.
        String to = rec;

        // Sender's email ID needs to be mentioned
        final String from = "abc@gmail.com";
        // final String username = "xyz";
        final String pass = "qwerty";
        // Assuming you are sending email from localhost
        String host = "smtp.gmail.com";

        // Get system properties
        Properties properties = System.getProperties();

        // Setup mail server
        properties.setProperty("mail.smtp.host", host);
        properties.put("mail.smtp.user", from);
        properties.put("mail.smtp.password", pass);
        properties.put("mail.smtp.port", "587");
        properties.put("mail.smtp.starttls.enable","true");
        properties.put("mail.smtp.auth", "true");

        Session session = Session.getInstance(properties, new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(from, pass);
            }
        });

        try{

            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(from));
            message.addRecipient(Message.RecipientType.TO,
                new InternetAddress(to));
            message.setSubject("Plant Trees");

            BodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText(bod);

            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(messageBodyPart);

            // Part two is attachment
            messageBodyPart = new MimeBodyPart();
            DataSource source = new FileDataSource(filepath);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(filepath);
            multipart.addBodyPart(messageBodyPart);

            MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
            mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
            mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
            mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
            mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
            mc.addMailcap("message/rfc822;; x-java-content- handler=com.sun.mail.handlers.message_rfc822");

            message.setContent(multipart);

            Transport.send(message);
            System.out.println("Sent message successfully....");
        }catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}

在主要活动中调用发送功能的代码是

public void sem()
{
    SendMail sm=new SendMail();

    sm.sending(filep,"abc@gmail.com","xyz");
}

点击发送按钮后，当我运行时，应用程序崩溃了请帮助也抱歉错误和大代码大小，但我刚刚学习Android，这是我的第一个项目。在此先感谢

Android相机，图库和邮件处理

0 个答案: