開機自啟動功能是通過Push注冊來完成的，因此可以使用兩種方式來注冊。第一種通過在jad文件注明PUSH注冊的方式即可，如下。
//MIDlet-Push-<n>: <ConnectionURL>, <MIDletClassName>, <AllowedSender>
MIDlet-Push-1: autostart://:, AutoStartStatic, *
請注意URL的寫法是autostart://:
如果想動態注冊，可以通過下面的方法。
//Registers the pushRegistry
public void Register(){
// List of registered push connections.
String connections[];
// Check to see if the connection has been registered.
// This is a dynamic connection allocated on first
// time execution of this MIDlet.
connections = PushRegistry.listConnections(false);
if (connections.length == 0) {
try {
//Register so the MIDlet will wake up when phone is started.
PushRegistry.registerConnection("autostart://:", "AutoStartDyn", "*");
sDisplayString = "MIDlet is registered";
} catch (Exception ex) {
System.out.println("Exception: " + ex);
sDisplayString = "Fail: " + ex;
}
} else {
sDisplayString = "Already registered";
}
displayForm.deleteAll();
displayForm.append(sDisplayString);
}
//Unregisters the pushRegistry
public void Unregister(){
if (PushRegistry.unregisterConnection("autostart://:")){
System.out.println("The pushRegistry is unregistered");
sDisplayString = "MIDlet is unregistered.";
}else{
System.out.println("There is no pushRegistry to unregister");
sDisplayString = "No MIDlet to unregister or failed to unregister";
}
displayForm.deleteAll();
displayForm.append(sDisplayString);
}
由於手頭沒有SonyEricsson JP7平台的手機，因此沒有辦法測試開機自動啟動功能。有條件的可以自己測試一下。
原文地址：http://developer.sonyericsson.com/site/global/techsupport/
tipstrickscode/java/p_autostarting_jp7midlets.jsp
