01_22_广播机制（二）

01_22_广播机制（二）





点击绑定，然后给号码123发送信息hello

//SMSReceiver.java
package mars.testbc2;

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{

    /*
     * 1、创建一个Bundle:bundle = intent.getExtras();
     *     Bundle用于Activity间通信，bundle类中加入数据（key -value的形式，
     * 另一个activity里面取数据的时候，就要用到key，找出对应的value）
     * 详细见：http://blog.csdn.net/randyjiawenjie/article/details/6651437
     * 2、创建一个Object[]数组从Bundle中取数据：myoBJpdus = (OBject[])bundle.get("pdus");
     *     Object[]数组用法详见：http://blog.csdn.net/linbin130209114/article/details/6150143
     * 3、创建一个大小为myOBJpdus.length的SmsMessage[]数组用于存放短信：
     *     messages = new SmsMessage[myOBJpdus.length];
     * 4、从Object[]数组中得到短信:
     *     message = new SmsMessage.createFromPdu((byte[])myOBJpdus[i]);
     *  //使用pdu格式的短信数据生成短信对象
     *  5、显示短信System.out.println(messages[i].getDisplayMessageBody());
     * */
    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        System.out.println("receive message");

        //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);
            Thread.sleep(3);
            System.out.println("-------------------------------");
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

//TestBC2Activity.java
package mars.testbc2;

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());
    }
    /*绑定监听器
     * 1、创建一个BacastReciver对象：smsReceiver = new SMSReceiver()
     * 2、创建一个IntentFilter对象：intentFilter = new IntentFilter()
     * 3、为过滤器intentFilter添加Action:filter.addAction(SMS_ACTiON)
     * 4、注册广播：TestBC2Activity.this.registerReceiver(smsReceiver,filter)
     *    这样一个广播smsReceiver和filter就一一对应啦*/
    class RegisterReceiverListener implements OnClickListener{
        @Override
        public void onClick(View v) {
            System.out.println("click********RegisterReceiverListener");
            //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
            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) {
            System.out.println("click********unRegisterReceiverListener");
            //解除BroadcastReceiver对象的注册
            TestBC2Activity.this.unregisterReceiver(smsReceiver);
        }
    }
}

也可以在AndroidMainfext.xml中注册receiver

<!--<receiver android:name="SMSReceiver">
            <intent-filter>
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
        </receiver>-->

结果：
04-10 23:12:44.312: I/System.out(330): click********RegisterReceiverListener
04-10 23:12:56.910: I/System.out(330): click********RegisterReceiverListener
04-10 23:13:29.990: I/System.out(330): receive message
04-10 23:13:30.000: I/System.out(330): 1
04-10 23:13:30.050: I/System.out(330): hello
04-10 23:13:30.120: I/System.out(330): -------------------------------
04-10 23:13:30.130: I/System.out(330): receive message
04-10 23:13:30.130: I/System.out(330): 1
04-10 23:13:30.141: I/System.out(330): hello
04-10 23:13:30.215: I/System.out(330): -------------------------------
04-10 23:14:02.320: I/System.out(330): click********unRegisterReceiverListener