Android服務沒有響應

Question

我正在開發一個Android防盜應用程序，並希望實現備份聯繫人功能。我不是Android的專家，也不是很熟悉，所以我只是簡單地實現一個簡單的編碼，將聯繫人姓名和電話號碼一起檢索，然後將所有這些附加到字符串消息中並通過電子郵件發送。我希望這是我在應用程序中的服務之一，這意味着用戶不會被告知此備份聯繫服務。我確實獨立運行這個函數作爲一個應用程序，它的工作。但是，當我提出這個我防盜應用作爲一種服務，它不能正常工作......懇請需要幫助從大家幫我檢查出的問題...謝謝...

public class BackupContacts extends Service{ 
/** Called when the activity is first created. */ 

    String msg = "**********Backup Phone Contacts**********\n\n"; 
    SharedPreferences pref; 
    public static String filenames = "AntiTheft"; 
    String email; 

@Override 
public IBinder onBind(Intent intent){ 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public void onCreate(){ 
    // TODO Auto-generated method stub 
    pref = getSharedPreferences(filenames, 0); 
    email = pref.getString("keyemail", ""); 
    super.onCreate(); 
} 

@Override 
public void onStart(Intent intent, int startId){ 
    // TODO Auto-generated method stub 
    super.onStart(intent, startId); 
} 

public int onStartCommand(Intent intent, int flags, int startId){ 

    retrieveContacts(); 
    return START_STICKY; 
} 

public void retrieveContacts(){ 

    ContentResolver cr = getContentResolver(); 
    Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null); 

    while(cursor.moveToNext()){ 
     String name = cursor.getString(cursor.getColumnIndexOrThrow(Phone.DISPLAY_NAME)); 
     String number = cursor.getString(cursor.getColumnIndexOrThrow(Phone.NUMBER)); 

     msg += name + "\t\t\t\t\t" + number + "\n";   
    } 

    try{ 
     sendMail(); 
    } catch(MessagingException e){ 
     e.printStackTrace(); 
    } 
} 

public void sendMail() throws MessagingException{ 

    // Recipient's email ID needs to be mentioned. 
    String to = email; 
    // Sender's email ID needs to be mentioned 
    String from = "testing@gmail.com"; 
    // Email Password 
    String password = "abc123"; 
    // Assuming you are sending email from GMail SMTP 
    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.host", host); 
    properties.put("mail.smtps.auth", "true"); 
    properties.put("mail.smtp.starttls.enable", "true"); 

    // Get the default Session object. 
    Session session = Session.getDefaultInstance(properties, null); 

    // Create a default MimeMessage object. 
    MimeMessage message = new MimeMessage(session); 
    // Set From: header field of the header. 
    message.setFrom(new InternetAddress(from)); 
    // Set To: header field of the header. 
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); 
    // Set Subject: header field 
    message.setSubject("This is the Backup Contacts Email!"); 
    // Now set the actual message 
    //message.setText(msg.toString()); 

    //BodyPart always come along with MultiPart (For sending attachment in email) 
    //Create the message part 
    BodyPart msgBodyPart = new MimeBodyPart(); 
    //Fill up the message 
    msgBodyPart.setText(msg); 

    //Create a multipart message 
    Multipart multipart = new MimeMultipart(); 
    //Set the text message part 
    multipart.addBodyPart(msgBodyPart); 
    //Set the complete message part 
    message.setContent(multipart); 

    // Send message 
    //Transport.send(message); 
    try{ 
     Transport transport = session.getTransport("smtps"); 
     transport.connect(host, from, password); 
     transport.sendMessage(message, message.getAllRecipients()); 
     System.out.println("Sent message successfully...."); 
     transport.close(); 
    }catch (MessagingException mex) { 
     mex.printStackTrace(); 
    } 
} 
} 

Answer 1

你確定您已經在Manifest.xml中宣佈此類爲服務？

的<application>標籤裏面，把下面的代碼：

<service android:name=".BackupContacts" />