好记性不如烂笔杆android学习笔记<八> Broadcase简单用法

//Broadcase用法
<!--使用SMS_ACTION时需要在 manifest.xml中 添加用户权限 -->

<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>

//发送广播的TestBCActivity，文件如下：

public class TestBCActivity 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.registerButton);
        registerButton.setOnClickListener(new RegisterButtonListener());
        unregisterButton = (Button)findViewById(R.id.unregisterButton);
        unregisterButton.setOnClickListener(new UnregisterButtonListener());
    }
    //绑定监听器
    class RegisterButtonListener implements OnClickListener{
        @Override
        public void onClick(View v) {
            //生成一个BroadcastReceiver对象
            smsReceiver = new SMSReceiver();
            //生成一个IntentFilter对象
            IntentFilter filter = new IntentFilter();
            //为InterntFilter添加一个Action
            filter.addAction(SMS_ACTION);
            //将BroadcastReceiver对象注册到系统当中
            TestBCActivity.this.registerReceiver(smsReceiver, filter);
        }    
    }
    //解除绑定监听器
    class UnregisterButtonListener implements OnClickListener{
        @Override
        public void onClick(View v) {
            TestBCActivity.this.unregisterReceiver(smsReceiver);
        }
    }
} 

//接收广播的 SMSReceiver

public class SMSReceiver extends BroadcastReceiver {
    public SMSReceiver() {
        super();
    }
    @Override
    public void onReceive(Context context, Intent intent) {
        System.out.println("receive message ！");
        //解析收到的信息具体内容
        //接收Intent对象当中的数据，
        Bundle bundle = intent.getExtras();
        //在Bundle对象当中有一个属性，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getDisplayMessageBody（）方法，就可以得到消息的内容
            System.out.println(messages[i].getDisplayMessageBody());
        }
    }   
}