service send information to Activity

by maggy mtac » Tue, 15 Mar 2011 17:21:21 GMT

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I want to known How send information for example String from service
to Activity?

How start even Activity in a service because i want to display when
the service recover a data , he transmit to even Activity?



Re: service send information to Activity

by Mark Murphy » Tue, 15 Mar 2011 20:01:47 GMT


Send a broadcast Intent.

Or, have the activity supply a Messenger to the service via an Intent
extra, and the service sends a message to the activity via that

Or, have the activity use createPendingResult() to create a
PendingIntent and pass that via an Intent extra, and the service
executes that PendingIntent, providing a response that the activity
receives in onActivityResult().

Or, if you are using bindService(), have the activity register some
sort of listener with the service, which the service uses to send back

There are probably other options as well.

Do not "start even Activity in a service", unless you KNOW that the
user is using your application in the foreground. Use a Notification
to alert the user that "the service recover a data", please.

Mark Murphy (a Commons Guy)  |  | 

Warescription: Three Android Books, Plus Updates, One Low Price!


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package com.grey.gui;

import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
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