android广播经典小例子

－－－－－－－－－－－－－－－－－AndroidManifest.xml－－－－－－－－－－－－－

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.homer.receiver"    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="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>        <receiver android:name="MyReceiver">               <intent-filter>                 <!-- android.intent.action.STATIC_BROADCAST为自定义的静态广播标记                   当MainActivtiy中发出android.intent.action.STATIC_BROADCAST　Intent时                   MyRecevicer会起相应执行MyRecevicer类的onReceive方法                 -->                <action android:name="android.intent.action.STATIC_BROADCAST" />                <!-- android.provider.Telephony.SMS_RECEIVED为android系统定义的短信广播标记                 当手机收到短信时  MyRecevicer会起相应 执行MyRecevicer类的onReceive方法                -->                <action android:name="android.provider.Telephony.SMS_RECEIVED" />            </intent-filter>        </receiver>    </application>

    <span style="color: rgb(77, 109, 243); font-family: monospace; line-height: 18px; white-space: nowrap;"><!-- </span><wbr style="color: rgb(77, 109, 243); font-family: monospace; line-height: 18px; white-space: nowrap;"><span style="color: rgb(77, 109, 243); font-family: monospace; line-height: 18px; white-space: nowrap;">添加程序接收短信的权限 </span><wbr style="color: rgb(77, 109, 243); font-family: monospace; line-height: 18px; white-space: nowrap;"><span style="color: rgb(77, 109, 243); font-family: monospace; line-height: 18px; white-space: nowrap;">--></span>    <uses-permission android:name="android.permission.RECEIVE_SMS"/></manifest></wbr></wbr>

－－－－－－－－－－－－－－－－－－－－MainActivity.java－－－－－－－－－－－－－

package com.homer.receiver; import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import com.homer.receiver.MyReceiver;public class MainActivity extends Activity implements OnClickListener{private static final String TAG="MainActivity";private Button sendstatic;private Button senddynamic;private MyReceiver myreceiver;/** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {       Log.v(TAG, "onCreate()");       super.onCreate(savedInstanceState);       setContentView(R.layout.main);       myreceiver=new MyReceiver();       findViews();//获取句柄       setListener();//实现行为功能    }      //Activity创建或者从后台重新回到前台时被调用     @Overrideprotected void onStart() {    Log.v(TAG, "onStart()");super.onStart();IntentFilter dynamic_filter = new IntentFilter();dynamic_filter.addAction("android.intent.action.DYNAMIC_BROADCAST");

                 <!-- android.intent.action.DYNAMIC_BROADCAST为自定义的动态广播标记                  当MainActivtiy中发出android.intent.action.DYNAMIC_BROADCAST　Intent时                  myrecevicer会起相应执行myrecevicer类的onReceive方法                 -->registerReceiver(myreceiver, dynamic_filter);}      //Activity从后台重新回到前台时被调用      @Override      protected void onRestart() {          super.onRestart();          Log.i(TAG, "onRestart called.");      }            //Activity创建或者从被覆盖、后台重新回到前台时被调用      @Override      protected void onResume() {          super.onResume();          Log.i(TAG, "onResume called.");      }          private void findViews(){   sendstatic=(Button)findViewById(R.id.send_static);   senddynamic=(Button)findViewById(R.id.send_dynamic);    }    private void setListener(){       sendstatic.setOnClickListener(this);        senddynamic.setOnClickListener(this);    }           public void onClick(View v) {       Log.v(TAG, "onClick()");       switch(v.getId()){       case R.id.send_static:               Intent intent = new Intent("android.intent.action.STATIC_BROADCAST");                 intent.putExtra("msg", "接受静态注册广播成功");                 sendBroadcast(intent);               break;                  case R.id.send_dynamic:           Intent intent1 = new Intent("android.intent.action.DYNAMIC_BROADCAST");                 intent1.putExtra("msg", "接受动态注册广播成功");                 sendBroadcast(intent1);               break;       }   }      //Activity被覆盖到下面或者锁屏时被调用      @Override      protected void onPause() {          super.onPause();          Log.i(TAG, "onPause called.");          //有可能在执行完onPause或onStop后,系统资源紧张将Activity杀死,所以有必要在此保存持久数据      }            //退出当前Activity或者跳转到新Activity时被调用      @Override      protected void onStop() {          super.onStop();          Log.i(TAG, "onStop called.");         }     @Override      protected void onDestroy() { Log.v(TAG, "onDestroy()");super.onDestroy();  unregisterReceiver(myreceiver); }  }

－－－－－－－－－－－－－－－－－－－－－MyRecevicer.java－－－－－－－－－－－－－－－－

<span style="font-size:18px;">package com.homer.receiver;  import java.sql.Date;import java.text.SimpleDateFormat;import android.content.BroadcastReceiver;  import android.content.Context;  import android.content.Intent;  import android.telephony.SmsMessage;import android.util.Log;    public class MyReceiver extends BroadcastReceiver {            private static final String TAG = "MyReceiver";            @Override      public void onReceive(Context context, Intent intent) {     Log.i(TAG, "onReceiver");    if(intent.getAction().equals("android.intent.action.DYNAMIC_BROADCAST")){    String msg = intent.getStringExtra("msg");    Log.i(TAG, msg);    }else if(intent.getAction().equals("android.intent.action.STATIC_BROADCAST")){                     String msg1 = intent.getStringExtra("msg");                Log.i(TAG, msg1);           }else if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){        //当系统收到短信时，会发出一个action名称为Android.provier.Telephony.SMS_RECEIVED的广播Intent，              //该Intent存放了接收到的短信内容，使用名称 "pdus"即可从Intent中获取短信内容。               //pdus是一个object类型的数组，每一个object都是一个byte[]字节数组，每一项为一条短信。                     Object[] pduses= (Object[])intent.getExtras().get("pdus");                     for(Object pdus: pduses){                       byte[] pdusmessage = (byte[])pdus;                       SmsMessage sms = SmsMessage.createFromPdu(pdusmessage);                       String mobile = sms.getOriginatingAddress();//发送短信的手机号码                       String content = sms.getMessageBody(); //短信内容                       Date date = new Date(sms.getTimestampMillis());                       SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");                         String time = format.format(date);  //得到发送时间                         Log.i(TAG, TAG+"-------msm---------");                         Log.i(TAG, TAG+"-->mobile:"+mobile);                         Log.i(TAG, TAG+"-->content:"+content);                         Log.i(TAG, TAG+"-->time:"+time);                     }          }      }  }  </span>

－－－－－－－－－－－－－－－－－－－－－main.xml－－－－－－－－－－－－－－－－

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >      <TextView        android:id="@+id/my_text"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:textColor="#000000"    android:textSize="18dip"    android:background="#00FF00"        android:text="BroadCastReceiver的学习"        android:gravity="center_vertical|center_horizontal"/>    <Button        android:id="@+id/send_static"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="静态注册" />    <Button        android:id="@+id/send_dynamic"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="动态注册" /></LinearLayout>

点击该应用程序，先按按钮静态注册，再按动态注册，最好按返回键，生成log为：

从log中我们可以学习activity的声明周期及接受广播的运行过程。

从本代码中可以学习到以下指示：

1.android的声明周期；

2.broadcastreceiver的注册方式：静态注册和动态注册两种；

3.android代码的风格,例如把时间监听和获取控件封装起来，使程序易读；

4.获取短信息的内容；