BroadcastReceiver静态注册广播与动态注册广播接收器

1、动态注册广播接收器即在.java程序中用registerReceiver(广播接收器，要接收的广播类型)；

package sunny.example.broadcasttest1;

import android.support.v7.app.ActionBarActivity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

	private IntentFilter intentFilter;
	private NetworkChangeReceiver networkChangeReceiver;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		intentFilter = new IntentFilter();
		intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");
		networkChangeReceiver = new NetworkChangeReceiver();
		registerReceiver(networkChangeReceiver,intentFilter);
	}


	class NetworkChangeReceiver extends BroadcastReceiver{

		@Override
		public void onReceive(Context context, Intent intent) {
			// TODO Auto-generated method stub
			ConnectivityManager connectionManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo networkInfo = connectionManager.getActiveNetworkInfo();
			if(networkInfo != null && networkInfo.isAvailable()){
				Toast.makeText(context, "network is available", Toast.LENGTH_SHORT).show();
			}
			//Toast.makeText(context, "network changed", Toast.LENGTH_SHORT).show();
		}
		
	}
	
}

2、静态注册广播接收器即在AndroidManifest中注册