深入广播机制之代码注册篇

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
   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);
  }
     
    }
}