How to send text SMS in Java ME
Article Metadata
Code Example
Source file: Media:HowToSendTextSMSMIDlet.zip
Article
Created: SergioEstevao
(15 Nov 2007)
Last edited: hamishwillee
(29 Aug 2012)
WMAPI allows Java ME applications to access messaging functionalities, as sending and receiving SMS and MMS messages. This article explains how to use it to send a simple text message.
Contents |
Overview
The following Java ME tip explains a method of sending text messages using WMAPI. In the program TextMessage interface represents a text message. The setPayloadText() method sets the characters in the message.
public boolean sendSms(String number, String message){
boolean result = true;
try {
//sets address to send message
String addr = "sms://"+number;
// opens connection
MessageConnection conn = (MessageConnection) Connector.open(addr);
// prepares text message
TextMessage msg =
(TextMessage)conn.newMessage(MessageConnection.TEXT_MESSAGE);
//set text
msg.setPayloadText(message);
// send message
conn.send(msg);
conn.close();
} catch (SecurityException se) {
// probably the user has not allowed to send sms
// you may want to handle this differently
result = false;
} catch (Exception e) {
result = false;
}
return result;
}
Download
You can download a sample MIDlet showing the code presented in this article here: Media:HowToSendTextSMSMIDlet.zip
Notes
- Remember that a single message has a maximum size (140 bytes, which translates to 160 7-bit characters). If your message is too long to fit in one message it can be splitted to a maximum of three SMS, this is handled automatic by the WMA implementation.
- Potentially-blocking operations, like sending a text message, should always be performed in separate threads, to avoid blocking the main MIDlet thread.
