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();
        }
    }

}