Broadcast and broadcast receiver code instances in Android _android

Source: Internet
Author: User

Broadcastreceiver can not only receive system broadcasts, but also receive customized broadcasts

1. Define a broadcast receiver

Copy Code code as follows:

public class Myreceiver extends Broadcastreceiver
{
Public Myreceiver ()
{
LOG.I (TAG, "myreceiver");
}

Getaction () of intent can be used to distinguish between different broadcasts received
@Override
public void OnReceive (context arg0, Intent arg1)
{
String action=intent.getaction ();
TO-DO LIST
}

}


2. Send a broadcast, define a good action flag, send with intent
Copy Code code as follows:

Instantiation of the Broadcastreceiver
Myreceiver mreceiver=new myreceiver ();
Set unique action, send with intent
Intent intent=new Intent ();
Intent.setaction (str);
Sendbroadcast (Intent);

3. Register a broadcast receiver that receives only the specified action
Copy Code code as follows:

Intentfilter filter1=new Intentfilter ();
Filter1.addaction (str);
Registerreceiver (Mreceiver,filter1);

4. Cancel the broadcast receiver
Copy Code code as follows:

Unregisterreceiver (Mreceiver);

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.