哪些年遇到过的Andriod问题(15)注册广播服务,如果你看过MARS老师的视频，还是不算了吧，这是纯COPY的

1)     注册广播服务

有二种方式：

u  在“AndroidManifest.xml”文件注册，这种方法是全局的，主程序只要启动了这种服务，就算是关闭了注册了的广播服务也会在手机后台一直运行。(有点像一个间谍服务)

 

       AndroidManifest.xml文件中写入

<application android:icon="@drawable/icon"android:label="@string/app_name">

              …

              <receiverandroid:name=".TestReceiver">

                     <intent-filter>

                            <actionandroid:name="android.intent.action.PICK" />

                     </intent-filter>

              </receiver>

       </application>

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

 

       写一个广播类

public classTestReceiver extends BroadcastReceiver{

       public TestReceiver(){          System.out.println("TestReceiver");      }

       @Override

       public void onReceive(Context context,Intent intent) {

              //这可以做收到信息后要做的事情

System.out.println("onReceive");

       }

}

 

       调用广播类

    class BroadcastListener implementsOnClickListener{

              @Override

              public void onClick(View v) {

                     Intent intent = newIntent();

                     intent.setAction(Intent.ACTION_EDIT);

                     TestActivity.this.sendBroadcast(intent);

              }        

    }

u  在程序中注册/卸载广播服务

       AndroidManifest.xml文件中写入

<application android:icon="@drawable/icon"android:label="@string/app_name">

              …

       </application>

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

 

       写一个广播类

public classSMSReceiver extends BroadcastReceiver{

       @Override

       public void onReceive(Context context,Intent intent) {     

              //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 = newSmsMessage[myOBJpdus.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());

        }

       }

}

       调用广播类

       private static final String SMS_ACTION ="android.provider.Telephony.SMS_RECEIVED";

    class RegisterReceiverListener implementsOnClickListener{

              @Override

              public void onClick(View v) {                   

                     smsReceiver = newSMSReceiver();//生成一个BroiadcastReceiver对象

                     IntentFilter filter = newIntentFilter();//生成一个IntentFilter对象

                     filter.addAction(SMS_ACTION);//为IntentFilter添加一个Action

                     //将BroadcastReceiver对象注册到系统当中

                     TestBC2Activity.this.registerReceiver(smsReceiver,filter);

              }

    }

   

    class UnRegisterReceiverListener implementsOnClickListener{

              @Override

              public void onClick(View v) {

                     //解除BroadcastReceiver对象的注册

                     TestBC2Activity.this.unregisterReceiver(smsReceiver);

              }

    }