当应用程序关闭或在后台运行时，如何在此代码中显示onTaskComplete中的通知

时间：2017-03-27 16:19:06

标签： android firebase android-asynctask

此代码从服务器获取请求并执行某些操作。我希望当应用程序关闭时获取请求并通过通知显示它。我可以从firebase获取消息并显示它，但这不是我想要的东西

MyActivity 

import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.messaging.FirebaseMessaging;

public class MyActivity extends ActionBarActivitiy implements AsyncTaskCompleteListener{


@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    .
    .
    .
}
private void displayFirebaseRegId() {
    SharedPreferences pref = getApplicationContext().getSharedPreferences(Config.SHARED_PREF, 0);
    String regId = preferenceHelper.getSessionToken();
    if (!TextUtils.isEmpty(regId))
}
private void subscribeToPushService() {
    FirebaseMessaging.getInstance().subscribeToTopic("news");
    String token = FirebaseInstanceId.getInstance().getToken();
}



@Override
protected void onResume() {
    super.onResume();

}

@Override
protected void onPause() {
    super.onPause();
}

@Override
protected void onStop() {
    // TODO Auto-generated method stub
    super.onStop();
}
@Override
protected void onDestroy() {


}



@Override
public void onTaskCompleted(String response, int service) {
    super.onTaskCompleted(response, service);
    switch (service) {
    case MyValues.Service.REQUEST_NEW:
    //          addNotification();
    ...
        if (requestId == MyValues.NO_REQUEST) {
            addNotification();
            addNewFragment(new myFragment(), false,
                    MyValues.REQUEST_, true);
        } else {
            ...
        }
        break;
}
}

ActionBarActivitiy 

abstract public class ActionBarActivitiy extends AppCompatActivity implements OnClickListener , AsyncTaskCompleteListener
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
}

public void addNotification() {
    NotificationCompat.Builder builder =
            new NotificationCompat.Builder(MyApplication.applicationContext)
                    .setSmallIcon(R.mipmap.ic_cl)
                    .setContentTitle("Notifications get request")
                    .setContentText("This is get request notification");

    Intent notificationIntent = new Intent(MyApplication.applicationContext, MainActivity.class);
    PendingIntent contentIntent =
            PendingIntent.getActivity(MyApplication.applicationContext, 0, notificationIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT);
    builder.setContentIntent(contentIntent);
 //        builder.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION));
    builder.setSound(Uri.parse("android.resource://"
            + MyApplication.applicationContext.getPackageName() + "/" + R.raw.sfx_counter_loop));
 //     builder.setOngoing(true);
    try {

        builder.setWhen(System.currentTimeMillis());
        builder.setVibrate(new long[]{1000, 1000, 1000, 1000, 1000});
        builder.setLights(Color.RED, 3000, 3000);
    }catch (Exception e){

    }
    // Add as notification
    NotificationManager manager = (NotificationManager)
            MyApplication.applicationContext.getSystemService(Context.NOTIFICATION_SERVICE);
    manager.notify(0, builder.build());
}

@Override
public void onTaskCompleted(String response, int service) {

}

....

}

interface AsyncTaskCompleteListener 

public interface AsyncTaskCompleteListener
{
void onTaskCompleted(String response, int service);
}

1 个答案:

答案 0 :(得分：0)

您可以使用A服务，警报管理器来执行此操作。

安排计时器将运行该服务。该服务将获取数据，然后显示通知。您也可以使用IntentService来释放主线程。

修改

以下是警报管理器的链接：

https://developer.android.com/training/scheduling/alarms.html

和IntentService：

https://developer.android.com/training/run-background-service/create-service.html

此外，要在您的应用关闭之前调用某项任务，请在调用super之前在onStop上调用您的方法。

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