MainActivity.java

package com.example.broadcasttest;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends ActionBarActivity {	Button btn01;	Button btn02;	Button btn03;	Button btn04;	private final static String ACTION_SMS = "android.provider.Telephony.SMS_RECEIVED";	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		btn01 = (Button)findViewById(R.id.btn01);		btn02 = (Button)findViewById(R.id.btn02);		btn03 = (Button)findViewById(R.id.btn03);		btn04 = (Button)findViewById(R.id.btn04);		btn01.setOnClickListener(new myListenr());		btn02.setOnClickListener(new myListener2());		btn03.setOnClickListener(new myListenr());		btn04.setOnClickListener(new myListenr());	}		class myListenr implements OnClickListener{		@Override		public void onClick(View view) {			// TODO Auto-generated method stub			if(R.id.btn01==view.getId()){				//开启广播				Intent intent = new Intent();//				intent.setAction(Intent.ACTION_EDIT);//				intent.setAction(Intent.ACTION_SEARCH);				MainActivity.this.sendBroadcast(intent);							}else if(R.id.btn03==view.getId()){				//开启广播				Intent intent = new Intent();				intent.setAction(ACTION_SMS);				System.out.println("准备模拟发送短信");				MainActivity.this.sendBroadcast(intent);							}else if(R.id.btn04==view.getId()){				//开启广播				TestBCReceiver02 receiver = new TestBCReceiver02();				System.out.println("==取消监听==");				MainActivity.this.unregisterReceiver(receiver);//这里会导致app崩溃，暂时不知道原因			}		}					}	class myListener2 implements OnClickListener{		@Override		public void onClick(View arg0) {			// TODO Auto-generated method stub			//注册广播事件			//1.获取recevier			TestBCReceiver02 receiver = new TestBCReceiver02();			//2.生成一个IntentFilter对象			IntentFilter filter = new IntentFilter();			//3.为intentFilter添加一个action 			filter.addAction(ACTION_SMS);			MainActivity.this.registerReceiver(receiver, filter);		}			}}

　　Recvier的实现类：

package com.example.broadcasttest;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class TestBCReceiver02 extends BroadcastReceiver{	public TestBCReceiver02(){		System.out.println("BC02的构造器开始了，。。。。。");	}	@Override	public void onReceive(Context arg0, Intent arg1) {		System.out.println("收到短信了");	}	}

　　Receiver实现类2

package com.example.broadcasttest;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class TestBroadcastReceiver extends BroadcastReceiver{		public TestBroadcastReceiver(){		System.out.println("receiver开始了，，，，");	}		@Override	public void onReceive(Context arg0, Intent arg1) {		System.out.println("onReceive.....");	}	}