我对BroadcastReceiver的简单理解

1.在AndroidManifest.xml中先注册写好的MyBroadcastReceive

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.lzm.android.broadcastReceiver"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />

<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".BroadcastReceiverDemo"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="MyBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.EDIT"/>
</intent-filter>
</receiver>
<!--
<receiver android:name="MyBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BATTERY_LOW"></action>
</intent-filter>
</receiver>
-->
</application>
</manifest>

package org.lzm.android.broadcastReceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class MyBroadcastReceiver extends BroadcastReceiver {
private static final String TAG = "MyBroadcastReceiver";
public MyBroadcastReceiver() {
// TODO Auto-generated constructor stub
System.out.println("MyBroadcastReceiver");
Log.i(TAG, "create");
}

@Override
public void onReceive(Context context, Intent intent) {
System.err.println("onReceive");
Log.i(TAG, "onReceive");
}

}

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class BroadcastReceiverDemo extends Activity implements OnClickListener{
/** Called when the activity is first created. */
Button b ;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b = (Button)findViewById(R.id.button1);
b.setOnClickListener(this);
}

@Override
public void onClick(View v) {
if(v == b){
Intent intent = new Intent();
intent.setAction(Intent.ACTION_EDIT);
this.sendBroadcast(intent);
}
}
}