我試圖用附件發送電子郵件，但是當我點擊發送郵件被髮送，但沒有連接（沒有任何意圖））

Question

，所以我想用我的應用程序做的是：

我想用附件發送反饋給特定的電子郵件地址。 但當我嘗試點擊發送按鈕郵件發送，但沒有附加的郵件文件，它會引發「打開失敗：ENOENT（沒有這樣的文件或目錄）」錯誤。

我想給所選文件（爲此我使用aFileChooser）的完整路徑到字符串「路徑」 ，以便它可以讀取文件名並附上郵件。

最後我想附加任何圖像文件與郵件。

指導我的隊友。

這裏是我的Gmail.java文件

import android.util.Log; 

import java.io.UnsupportedEncodingException; 
import java.net.URISyntaxException; 
import java.util.List; 
import java.util.Properties; 

import javax.activation.DataHandler; 
import javax.activation.DataSource; 
import javax.activation.FileDataSource; 
import javax.mail.BodyPart; 
import javax.mail.Message; 
import javax.mail.MessagingException; 
import javax.mail.Multipart; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.AddressException; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart; 
import javax.mail.internet.MimeMessage; 
import javax.mail.internet.MimeMultipart; 



public class GMail { 


    final String emailPort = "587"; 
    final String smtpAuth = "true"; 
    final String starttls = "true"; 
    final String emailHost = "smtp.gmail.com"; 

    String fromEmail; 
    String fromPassword; 
    List<String> toEmailList; 
    String emailSubject; 
    String emailBody; 

    Properties emailProperties; 
    Session mailSession; 
    MimeMessage emailMessage; 





    public GMail(String fromEmail, String fromPassword, 
       List<String> toEmailList, String emailSubject, String emailBody) { 
     this.fromEmail = fromEmail; 
     this.fromPassword = fromPassword; 
     this.toEmailList = toEmailList; 
     this.emailSubject = emailSubject; 
     this.emailBody = emailBody; 

     emailProperties = System.getProperties(); 
     emailProperties.put("mail.smtp.port", emailPort); 
     emailProperties.put("mail.smtp.auth", smtpAuth); 
     emailProperties.put("mail.smtp.starttls.enable", starttls); 
     Log.i("GMail", "Mail server properties set."); 
    } 

    public MimeMessage createEmailMessage() throws AddressException, 
      MessagingException, UnsupportedEncodingException, URISyntaxException { 

     mailSession = Session.getDefaultInstance(emailProperties, null); 
     emailMessage = new MimeMessage(mailSession); 

     emailMessage.setFrom(new InternetAddress(fromEmail, fromEmail)); 
     for (String toEmail : toEmailList) { 
      Log.i("GMail","toEmail: "+toEmail); 
      emailMessage.addRecipient(Message.RecipientType.TO, 
        new InternetAddress(toEmail)); 
     } 
     emailMessage.setSubject(emailSubject); 
     emailMessage.setContent(emailBody, "text/html");// for a html email 
     // emailMessage.setText(emailBody);// for a text email 

     //String path="storage/emulated/0/Pictures/Ghost335.jpeg"; 

     String path ; 
     path = toString(); 
     Multipart _multipart = new MimeMultipart(); 
     BodyPart messageBodyPart = new MimeBodyPart(); 
     DataSource source = new FileDataSource(path); 

     messageBodyPart.setDataHandler(new DataHandler(source)); 
     messageBodyPart.setFileName(path); 

     _multipart.addBodyPart(messageBodyPart); 
     emailMessage.setContent(_multipart); 


     Log.i("GMail", "Email Message created."); 
     return emailMessage; 
    } 

    public void sendEmail() throws AddressException, MessagingException { 

     Transport transport = mailSession.getTransport("smtp"); 
     transport.connect(emailHost, fromEmail, fromPassword); 
     Log.i("GMail","allrecipients: "+emailMessage.getAllRecipients()); 
     transport.sendMessage(emailMessage, emailMessage.getAllRecipients()); 
     transport.close(); 
     Log.i("GMail", "Email sent successfully."); 
    } 

} 

這裏是FeedbackActivity.java文件

import java.io.File; 
import java.util.Arrays; 
import java.util.List; 

import android.app.Activity; 
import android.content.Intent; 
import android.net.Uri; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.ipaulpro.afilechooser.utils.FileUtils; 

public class FeedbackActivity extends AppCompatActivity { 

    private static final String TAG = null; 
    private Button sendEmail; 
    private Button chooseFileButton; 
    private String filename; 
    private String username; 
    private String password; 
    private String pathname; 
    public static final int REQUEST_CHOOSER = 1234; 
    private static final int FILE_SELECT_CODE = 0; 


    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     switch (requestCode) { 
      case FILE_SELECT_CODE: 
       if (resultCode == RESULT_OK) { 
        // Get the Uri of the selected file 
        Uri uri = data.getData(); 
        Log.d(TAG, "File Uri: " + uri.toString()); 
        // Get the path 
        String path = FileUtils.getPath(this, uri); 
        Log.d(TAG, "File Path: " + path); 
        // Get the file instance 
        //File file = new File(path); 
        // Initiate the upload 

       } 
       break; 
     } 
     super.onActivityResult(requestCode, resultCode, data); 
    } 


    private void showFileChooser() { 
     Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
     intent.setType("*/*"); 
     intent.addCategory(Intent.CATEGORY_OPENABLE); 

     try { 
      startActivityForResult(
        Intent.createChooser(intent, "Select a File to Upload"), 
        FILE_SELECT_CODE); 
     } catch (android.content.ActivityNotFoundException ex) { 
      // Potentially direct the user to the Market with a Dialog 
      Toast.makeText(this, "Please install a File Manager.", 
        Toast.LENGTH_SHORT).show(); 
     } 
    } 



    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_feedback); 
     final Button send = (Button) this.findViewById(R.id.button); 
     send.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 
       Log.i("FeedbackActivity", "Send Button Clicked."); 

       String fromEmail = ((TextView) findViewById(R.id.editTextUserEmail)) 
         .getText().toString(); 
       String fromPassword = ((TextView) findViewById(R.id.editTextPassword)) 
         .getText().toString(); 
       final String toEmails ="devemail@gmail.com"; 
       List<String> toEmailList = Arrays.asList(toEmails 
         .split("\\s*,\\s*")); 
       Log.i("FeedbackActivity", "To List: " + toEmailList); 
       String emailSubject = ((TextView) findViewById(R.id.editTextSubject)) 
         .getText().toString(); 
       String emailBody = ((TextView) findViewById(R.id.editTextMessage)) 
         .getText().toString(); 

       new SendMailTask(FeedbackActivity.this).execute(fromEmail, 
         fromPassword, toEmailList, emailSubject, emailBody); 


      } 
     }); 



     chooseFileButton = (Button) findViewById(R.id.button2); 
     chooseFileButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       // Create the ACTION_GET_CONTENT Intent 

         showFileChooser(); 
      } 
     }); 
    } 
} 

SendMailTask​​.java文件

import java.util.List; 

import android.app.Activity; 
import android.app.ProgressDialog; 
import android.os.AsyncTask; 
import android.util.Log; 

import com.example.mehul.takeshot.GMail; 

public class SendMailTask extends AsyncTask { 

    private ProgressDialog statusDialog; 
    private Activity FeedbackActivity; 

    public SendMailTask(Activity activity) { 
     FeedbackActivity = activity; 

    } 

    protected void onPreExecute() { 
     statusDialog = new ProgressDialog(FeedbackActivity); 
     statusDialog.setMessage("Getting ready..."); 
     statusDialog.setIndeterminate(false); 
     statusDialog.setCancelable(false); 
     statusDialog.show(); 
    } 

    @Override 
    protected Object doInBackground(Object... args) { 
     try { 
      Log.i("SendMailTask", "About to instantiate GMail..."); 
      publishProgress("Processing input...."); 
      GMail androidEmail = new GMail(args[0].toString(), 
        args[1].toString(), (List) args[2], args[3].toString(), 
        args[4].toString()); 
      publishProgress("Preparing mail message...."); 
      androidEmail.createEmailMessage(); 
      publishProgress("Sending email...."); 
      androidEmail.sendEmail(); 
      publishProgress("Email Sent."); 
      Log.i("SendMailTask", "Mail Sent."); 
     } catch (Exception e) { 
      publishProgress(e.getMessage()); 
      Log.e("SendMailTask", e.getMessage(), e); 
     } 
     return null; 
    } 

    @Override 
    public void onProgressUpdate(Object... values) { 
     statusDialog.setMessage(values[0].toString()); 

    } 

    @Override 
    public void onPostExecute(Object result) { 
     statusDialog.dismiss(); 
    } 

} 

這裏是activity_feedback.xml文件

<?xml version="1.0" encoding="utf-8"?> 


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".FeedbackActivity" 
    android:id="@+id/activity_feedback"> 

    <TextView 
     android:text="User Email" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 

    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/editTextUserEmail" /> 

    <TextView 
     android:text="User Password" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 
    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/editTextPassword" /> 

    <TextView 
     android:text="Subject" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 
    <EditText 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/editTextSubject" /> 
    <TextView 
     android:text="Message" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" /> 
    <EditText 
     android:lines="4" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/editTextMessage" /> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/button" 
     android:text="Send"/> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/button2" 
     android:text="choose"/> 



</LinearLayout> 

Answer 1

最簡單的方法是

String filename="contacts_sid.vcf"; 
    File filelocation = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), filename); 
    Uri path = Uri.fromFile(filelocation); 
    Intent emailIntent = new Intent(Intent.ACTION_SEND); 

    // set the type to 'email' 
    emailIntent .setType("vnd.android.cursor.dir/email"); 
    String to[] = {"asd@gmail.com"}; 
    emailIntent .putExtra(Intent.EXTRA_EMAIL, to); 

    // the attachment 
    emailIntent .putExtra(Intent.EXTRA_STREAM, path); 

    // the mail subject 
    emailIntent .putExtra(Intent.EXTRA_SUBJECT, "Subject"); 
    startActivity(Intent.createChooser(emailIntent , "Send email...")); 

確保您有這些權限以及

<uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />