ANDROID_MARS学习笔记_S01原始版_013_广播机制二

一、代码
1.xml
(1)main.xml

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     >
 <Button
     android:id="@+id/register"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="绑定监听器"
     />
 <Button
     android:id="@+id/unregister"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="解除监听器绑定"
     />

 </LinearLayout>

(2)AndroidManifest.xml.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.broadcast2"
     android:versionCode="1"
     android:versionName="1.0" >

     <uses-sdk
         android:minSdkVersion="8"
         android:targetSdkVersion="21" />

     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
             android:name=".TestBC2Activity"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
     </application>
     <uses-permission android:name="android.permission.RECEIVE_SMS"/>
 </manifest>

2.java
(1)TestBC2Activity.java

 package com.broadcast2;

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

 public class TestBC2Activity extends Activity {
     /** Called when the activity is first created. */
     private Button registerButton = null;
     private Button unregisterButton = null;
     private SMSReceiver smsReceiver = null;

     private static final String SMS_ACTION = "android.provider.Telephony.SMS_RECEIVED";
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         registerButton = (Button)findViewById(R.id.register);
         registerButton.setOnClickListener(new RegisterReceiverListener());
         unregisterButton = (Button)findViewById(R.id.unregister);
         unregisterButton.setOnClickListener(new UnRegisterReceiverListener());
     }

     class RegisterReceiverListener implements OnClickListener{

         @Override
         public void onClick(View v) {
             //生成一个BroiadcastReceiver对象
             smsReceiver = new SMSReceiver();
             //生成一个IntentFilter对象
             IntentFilter filter = new IntentFilter();
             //为IntentFilter添加一个Action,决定了reciver能接收什么类型的请求
             filter.addAction(SMS_ACTION);
             //将BroadcastReceiver对象注册到系统当中
             TestBC2Activity.this.registerReceiver(smsReceiver, filter);
         }

     }

     class UnRegisterReceiverListener implements OnClickListener{

         @Override
         public void onClick(View v) {
             //解除BroadcastReceiver对象的注册
             TestBC2Activity.this.unregisterReceiver(smsReceiver);
         }

     }
 }

(2)SMSReceiver.java

 package com.broadcast2;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.telephony.SmsMessage;

 public class SMSReceiver extends BroadcastReceiver{

     @Override
     public void onReceive(Context context, Intent intent) {
         // TODO Auto-generated method stub
         System.out.println("receive message");

         //此例子是获取短信内容
         //接受Intent对象当中的数据
         Bundle bundle = intent.getExtras();
         //在Bundle对象当中有一个属性名为pdus，这个属性的值是一个Object数组
         Object[] myOBJpdus = (Object[]) bundle.get("pdus");
         //创建一个SmsMessage类型的数组
         SmsMessage[] messages = new SmsMessage[myOBJpdus.length];
         System.out.println(messages.length);
         for (int i = 0; i<myOBJpdus.length; i++)
         {
           //使用Object数组当中的对象创建SmsMessage对象
           messages[i] = SmsMessage.createFromPdu((byte[]) myOBJpdus[i]);
           //调用SmsMessage对象的getDisppalyMessageBody()方法，就可以得到消息的内容
           System.out.println(messages[i].getDisplayMessageBody());
         }
         try {
             Thread.sleep(30 * 1000);
             System.out.println("-------------------------------");
         } catch (InterruptedException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }

 }