Seventh Day Android 4 components

1. Activity

2. Broadcastreceiver

3.services

4.contentProvider

A. The broadcast recipient ,---------------trigger the Onreceiver method when the specified broadcast is received. This class needs to inherit Broadcastreceiver

public void OnReceive (context context, Intent Intent) {

Broadcast triggers need to be included in the configuration list

<receiver android:name= "Com.example.ipdailer.CallCast" >            <intent-filter >                <action android: Name= "Android.intent.action.NEW_OUTGOING_CALL"/>            </intent-filter>        </receiver>

Can also be configured by code

Registration of broadcasting, cancellation of registration Unregisterreceiver (receiver);

New mybroadrecastreceiver (); // Create Intent-filter set a broadcast action        New Intentfilter ();        Filter.addaction (Intent.action_screen_off);        Filter.addaction (intent.action_screen_on);         // start registering a broadcast        Registerreceiver (receiver, filter);

Second, the opening way of service service

1. StartService can still exist in memory after the activity is destroyed.

2.bindService destroyed with activity destruction. (You can return a Binder object to return the methods in the service to the activity call through binder)

Seventh Day Android 4 components