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
public void OnReceive (context arg0, Intent arg1)
String action=intent.getaction ();


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);

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