mars android开发之二:在代码中注册广播

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如果用于更新UI,通常会使用该方法注册,在Activity启动的时候注册BroadcastReceiver,在Activity不可见以后取消注册

MainActivity.java

package com.example.broadcastreceivertesttwo;import android.os.Bundle;import android.app.Activity;import android.content.IntentFilter;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {Button registerButton;Button unregisterButton;SMSReceiver smsReceiver;private static final String SMS_ACTION="android.provider.Telephony.SMS_RECEIVED";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);registerButton = (Button) findViewById(R.id.registerButton);unregisterButton = (Button) findViewById(R.id.unregisterButton);registerButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {smsReceiver = new SMSReceiver();IntentFilter filter = new IntentFilter();filter.addAction(SMS_ACTION);registerReceiver(smsReceiver, filter);}});unregisterButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {unregisterReceiver(smsReceiver);}});}}

Manifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.broadcastreceivertesttwo"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="10"        android:targetSdkVersion="10" />    <uses-permission android:name="android.permission.RECEIVE_SMS" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.broadcastreceivertesttwo.MainActivity"            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></manifest>

SMSReceiver.java

package com.example.broadcastreceivertesttwo;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) {            System.out.println("receiver 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());            }        }    }
                                             
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