package com.sxt.day07_07;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Intent intent=new Intent("com.sxt.day07_07.my_receiver");

        sendStickyBroadcast(intent);//发送粘滞广播，一直停留等着接收者

        setListener();

    }

    private void setListener() {

        findViewById(R.id.btnStartSecondActivity).setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent2=new Intent(MainActivity.this, SecondActivity.class);

                startActivity(intent2);//启动SecondActivity

            }

        });

    }

}

package com.sxt.day07_07;

import android.os.Bundle;

import android.app.Activity;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.util.Log;

import android.view.Menu;

public class SecondActivity extends Activity {

    MyReceiver mReceiver;

    Intent mIntent;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_second);

        registerReceiver();

    }

    private void registerReceiver() {

        mReceiver=new MyReceiver();

        IntentFilter filter=new IntentFilter("com.sxt.day07_07.my_receiver");

        registerReceiver(mReceiver, filter);

    }

    //内部类，只有SecondActivity启动了，MyReceiver才能注册接收广播。

    class MyReceiver extends BroadcastReceiver{

        @Override

        public void onReceive(Context context, Intent intent) {

            Log.i("main","MyReceiver.onReceive()");

            mIntent=intent;

        }

    }

    @Override

    protected void onDestroy() {

        super.onDestroy();

        removeStickyBroadcast(mIntent);//移出，移出以后就收不到广播了

        unregisterReceiver(mReceiver);//移出接收者

    }

}

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.sxt.day07_07"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="18" />

    <uses-permission android:name="android.permission.BROADCAST_STICKY"/>  粘滞广播要申请权限

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.sxt.day07_07.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity

            android:name="com.sxt.day07_07.SecondActivity"

            android:label="@string/title_activity_second" >

        </activity>

    </application>

</manifest>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <Button

        android:id="@+id/btnStartSecondActivity"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".SecondActivity" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

</RelativeLayout>