J2ME SMS IOException

Question

我正嘗試向手機發送文本消息，並且出現錯誤

由於未知原因未能發送。 -java.io.IOException

import javax.microedition.io.Connector; 
import javax.microedition.lcdui.Display; 
import javax.microedition.lcdui.Form; 
import javax.microedition.midlet.*; 
import javax.wireless.messaging.MessageConnection; 
import javax.wireless.messaging.TextMessage; 

public class Midlet extends MIDlet { 
    Form form = new Form("Form"); 
    Display display; 
    public void startApp() 
    { 
     display = Display.getDisplay(this); 
     display.setCurrent(form); 

     sendSMS("Hello from j2me"); 
    } 

    public void pauseApp() { 
    } 

    public void destroyApp(boolean unconditional) { 
    } 

    private void sendSMS(String s) { 
     String destination = "+12234567890"; 
     String addr = "sms://" + destination; 

     out("Setting up message"); 
     MessageConnection sender = null; 

     try 
     { 
      try 
      { 
        sender = (MessageConnection) Connector.open(addr); 
        TextMessage msg = (TextMessage) sender.newMessage(MessageConnection.TEXT_MESSAGE); 
        msg.setPayloadText(s); 
        out("sending"); 
        sender.send(msg); 
        out("sent successfully"); 
      } 
      catch (Exception ex) 
      { 
        out("Error1:" + ex.getMessage() + " : " + ex.toString() + "\n\n"); 
      } 
      finally 
      { 
       sender.close(); 
      } 
     } 
     catch (Exception ex) { 
       //handle exception 
       out("Error2:" + ex.getMessage() + " : " + ex.toString() + "\n\n"); 
     } 
    } 

    private void out(String str) 
    { 
     form.append(str + "\n"); 
    } 
} 

Answer 1

您是否向您的jad添加了權限？

的MIDlet-權限：javax.microedition.io.Connector.sms，javax.wireless.messaging.sms.send

Answer 2

有各種各樣的原因：

• 現收現付的手機上沒有信用
• 沒有移動接收
• SMS API已被手機運營商
• 用戶拒絕安全提示（這將導致SecurityException）
• 無效手機號碼