開機(jī)就能自動啟動MIDlet一直是J2ME開發(fā)者的夢想，這一夢想在索尼愛立信的JP7平臺上實現(xiàn)了。不過需要注意的是早期的幾款機(jī)型不支持，比如K790等。具體請參考索尼愛立信的手冊。

　　開機(jī)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。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(tài)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);
}

　　由于手頭沒有SonyEricsson JP7平臺的手機(jī)，因此沒有辦法測試開機(jī)自動啟動功能。有條件的可以自己測試一下。