问题描述

android中启动服务的问题

我想在一个活动开始时调用一个服务。
这是Service class:

public class UpdaterServiceManager extends Service {private final int UPDATE_INTERVAL = 60 * 1000;private Timer timer = new Timer();  private static final int NOTIFICATION_EX = 1;private NotificationManager notificationManager;public UpdaterServiceManager(){}@Overridepublic IBinder onBind(Intent intent) {    // TODO Auto-generated method stub    return null;}@Override   public void onCreate() {  //code to execute when the service is first created}   @Override   public void onDestroy() {       if (timer != null){        timer.cancel();    } }@Overridepublic int onStartCommand(Intent intent int flags int startid) {      notificationManager = (NotificationManager)     getSystemService(Context.NOTIFICATION_SERVICE);    int icon = android.R.drawable.stat_notify_sync;    CharSequence tickerText = ""Hello"";    long when = System.currentTimeMillis();    Notification notification = new Notification(icon tickerText when);    Context context = getApplicationContext();    CharSequence contentTitle = ""My notification"";    CharSequence contentText = ""Hello World!"";    Intent notificationIntent = new Intent(this Main.class);    PendingIntent contentIntent = PendingIntent.getActivity(this     notification.setLatestEventInfo(context contentTitle         contentText contentIntent);    notificationManager.notify(NOTIFICATION_EX notification);    Toast.makeText(thisStarted!"" Toast.LENGTH_LONG);    timer.scheduleAtFixedRate(new TimerTask() {        @Override        public void run() {            // Check if there are updates here and notify if true        }           } 0 UPDATE_INTERVAL);    return START_STICKY;}private void stopService() {    if(timer != null)        timer.cancel();}}

这是调用Service的方法：

Intent serviceIntent = new Intent();        serviceIntent.setAction(""cidadaos.cidade.data.UpdaterServiceManager"");        startService(serviceIntent);

可结果是没有调用成功。上面的代码块是在activity中的onCreate方法里调用的。我调试过了也没有抛出异常。
请大牛指点错误之处，谢谢。

解决方案

检查下看在Manifest中有没有注册这个Service，我有时候会忘记注册，导致花了很长时间来解决。

解决方案二：

startService(new Intent(this MyService.class));<application    android:icon=""@drawable/ic_launcher""    android:label=""@string/app_name"" >    ...    <service        android:name="".MyService""        android:label=""My Service"" >    </service></application>