import com.google.samples.apps.iosched.sync.TriggerSyncReceiver; //导入依赖的package包/类
private void scheduleSync(Context context, int syncDelay) {
    // Use delay instead of jitter, since we're trying to squelch messages
    int jitterMillis = syncDelay;

    final String debugMessage = "Scheduling next user data sync for " + jitterMillis + "ms";
    LOGI(TAG, debugMessage);

    final Intent intent = new Intent(context, TriggerSyncReceiver.class);
    intent.putExtra(TriggerSyncReceiver.EXTRA_USER_DATA_SYNC_ONLY, true);
    ((AlarmManager) context.getSystemService(Context.ALARM_SERVICE))
            .set(
                    AlarmManager.RTC,
                    System.currentTimeMillis() + jitterMillis,
                    PendingIntent.getBroadcast(
                            context,
                            0,
                            intent,
                            PendingIntent.FLAG_CANCEL_CURRENT)
            );

}
 

import com.google.samples.apps.iosched.sync.TriggerSyncReceiver; //导入依赖的package包/类
private void scheduleSync(Context context, int syncJitter) {
    int jitterMillis = (int) (RANDOM.nextFloat() * syncJitter);
    final String debugMessage = "Scheduling next sync for " + jitterMillis + "ms";
    LOGI(TAG, debugMessage);

    ((AlarmManager) context.getSystemService(Context.ALARM_SERVICE))
            .set(
                    AlarmManager.RTC,
                    System.currentTimeMillis() + jitterMillis,
                    PendingIntent.getBroadcast(
                            context,
                            0,
                            new Intent(context, TriggerSyncReceiver.class),
                            PendingIntent.FLAG_CANCEL_CURRENT));

}