BroadcastReceiver（广播接收者）

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button)findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("action_name");
intent.putExtra("name", "我是名字");
sendBroadcast(intent);
}
});
}

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="发送广播" />

</RelativeLayout>

public class Receiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Toast.makeText(context, intent.getStringExtra("name"), Toast.LENGTH_SHORT).show();
}

}

<receiver
android:name="com.lyh.broadcastdemo.Receiver">
<intent-filter>
<action android:name="action_name"/>
</intent-filter>
</receiver>

IntentFilter filter = new IntentFilter("action_name");
Receiver receiver = new Receiver();             MainActivity.this.registerReceiver(receiver, filter);