ANDROID_MARS学习笔记_S01原始版_013_广播机制二

Posted 2020-06-14

一、代码
1.xml
(1)main.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="fill_parent"
 5     android:layout_height="fill_parent"
 6     >
 7 <Button
 8     android:id="@+id/register"
 9     android:layout_width="fill_parent" 
10     android:layout_height="wrap_content" 
11     android:text="绑定监听器"
12     />
13 <Button
14     android:id="@+id/unregister"
15     android:layout_width="fill_parent" 
16     android:layout_height="wrap_content" 
17     android:text="解除监听器绑定"
18     />
19     
20 </LinearLayout>

 

(2)AndroidManifest.xml.xml

 

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.broadcast2"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk
 8         android:minSdkVersion="8"
 9         android:targetSdkVersion="21" />
10 
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16         <activity
17             android:name=".TestBC2Activity"
18             android:label="@string/app_name" >
19             <intent-filter>
20                 <action android:name="android.intent.action.MAIN" />
21 
22                 <category android:name="android.intent.category.LAUNCHER" />
23             </intent-filter>
24         </activity>
25     </application>
26     <uses-permission android:name="android.permission.RECEIVE_SMS"/>
27 </manifest>

 

 

 

2.java
(1)TestBC2Activity.java

 1 package com.broadcast2;
 2 
 3 import android.app.Activity;
 4 import android.content.IntentFilter;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.Button;
 9 
10 public class TestBC2Activity extends Activity {
11     /** Called when the activity is first created. */
12     private Button registerButton = null;
13     private Button unregisterButton = null;
14     private SMSReceiver smsReceiver = null;
15     
16     private static final String SMS_ACTION = "android.provider.Telephony.SMS_RECEIVED";
17     @Override
18     public void onCreate(Bundle savedInstanceState) {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.main);
21         registerButton = (Button)findViewById(R.id.register);
22         registerButton.setOnClickListener(new RegisterReceiverListener());
23         unregisterButton = (Button)findViewById(R.id.unregister);
24         unregisterButton.setOnClickListener(new UnRegisterReceiverListener());
25     }
26     
27     class RegisterReceiverListener implements OnClickListener{
28 
29         @Override
30         public void onClick(View v) {
31             //生成一个BroiadcastReceiver对象
32             smsReceiver = new SMSReceiver();
33             //生成一个IntentFilter对象
34             IntentFilter filter = new IntentFilter();
35             //为IntentFilter添加一个Action,决定了reciver能接收什么类型的请求
36             filter.addAction(SMS_ACTION);
37             //将BroadcastReceiver对象注册到系统当中
38             TestBC2Activity.this.registerReceiver(smsReceiver, filter);
39         }
40         
41     }
42     
43     class UnRegisterReceiverListener implements OnClickListener{
44 
45         @Override
46         public void onClick(View v) {
47             //解除BroadcastReceiver对象的注册
48             TestBC2Activity.this.unregisterReceiver(smsReceiver);
49         }
50         
51     }
52 }

 

(2)SMSReceiver.java

 

 1 package com.broadcast2;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 import android.os.Bundle;
 7 import android.telephony.SmsMessage;
 8 
 9 public class SMSReceiver extends BroadcastReceiver{
10 
11     @Override
12     public void onReceive(Context context, Intent intent) {
13         // TODO Auto-generated method stub
14         System.out.println("receive message");
15         
16         //此例子是获取短信内容
17         //接受Intent对象当中的数据
18         Bundle bundle = intent.getExtras();
19         //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
20         Object[] myOBJpdus = (Object[]) bundle.get("pdus"); 
21         //创建一个SmsMessage类型的数组
22         SmsMessage[] messages = new SmsMessage[myOBJpdus.length];  
23         System.out.println(messages.length);
24         for (int i = 0; i<myOBJpdus.length; i++) 
25         {  
26           //使用Object数组当中的对象创建SmsMessage对象
27           messages[i] = SmsMessage.createFromPdu((byte[]) myOBJpdus[i]);  
28           //调用SmsMessage对象的getDisppalyMessageBody()方法，就可以得到消息的内容
29           System.out.println(messages[i].getDisplayMessageBody());
30         }
31         try {
32             Thread.sleep(30 * 1000);
33             System.out.println("-------------------------------");
34         } catch (InterruptedException e) {
35             // TODO Auto-generated catch block
36             e.printStackTrace();
37         }
38     }
39 
40 }