8.3 Android Basic 数据存储 Intent&Broadcast

<<BroadcastReceiverDemo.zip>>

Intnet & Broadcast 示例演示

   

• 新建项目BroadcastReceiverDemo项目,编辑AndroidManifest.xml

  <?xml version="1.0" encoding="utf-8"?>

  <manifest xmlns:android="http://schemas.android.com/apk/res/android"

  package="com.tutorial" android:versionCode="1" android:versionName="1.0">

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

  <activity android:name=".BroadcastReceiverDemo"

  android:label="@string/app_name">

  <intent-filter>

  <action android:name="android.intent.action.MAIN" />

  <category android:name="android.intent.category.LAUNCHER" />

  </intent-filter>

  </activity>

     

  <receiver android:name="AndroidReceiver1">

  <intent-filter>

  <action android:name="com.toturial.action.NEW_BROADCAST_1"></action>

  </intent-filter>

  </receiver>

  <receiver android:name="AndroidReceiver2">

  <intent-filter>

  <action android:name="com.tutorial.action.NEW_BROADCAST_2"></action>

  </intent-filter>

  </receiver>

  </application>

  <uses-sdk android:minSdkVersion="8" />

     

  </manifest>

     

  我们注册了两个BroadcastReceiver 一个AndroidReceiver1 另一个是AndroidReceiver2 前者接收action为com.tutorial.action.NEW_BRAODCAST_1的Intnet,后者接收action为com.tutorial.action.NEW_BROADCAST_2的Intent。

     

  2. 编辑BroadcastReceiverDemo类，在这里广播Intent:

  import android.app.Activity;

  import android.content.Intent;

  import android.os.Bundle;

  import android.view.Menu;

  import android.view.MenuItem;

     

  public class BroadcastReceiverDemo extends Activity {

  public static final int ITEM0 = Menu.FIRST;

  public static final int ITEM1 = Menu.FIRST + 1;

     

  static final String ACTION_1 = "com.toturial.action.NEW_BROADCAST_1";

  static final String ACTION_2 = "com.tutorial.action.NEW_BROADCAST_2";

     

  @Override

  public void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.main);

  }

     

  public boolean onCreateOptionsMenu(Menu menu) {

  super.onCreateOptionsMenu(menu);

  menu.add(0, ITEM0, 0, "显示Notification");

  menu.add(0, ITEM1, 0, "清除Notification");

  menu.findItem(ITEM1);

  return true;

  }

     

  public boolean onOptionsItemSelected(MenuItem item) {

  switch (item.getItemId()) {

  case ITEM0:

  actionClickMenuItem1();

  break;

  case ITEM1:

  actionClickMenuItem2();

  break;

     

  }

  return true;

  }

     

     

  private void actionClickMenuItem1() {

  Intent intent = new Intent(ACTION_1);

  sendBroadcast(intent);

  }

     

     

  private void actionClickMenuItem2() {

  Intent intent = new Intent(ACTION_2);

  sendBroadcast(intent);

     

  }

  }

     

  3. 创建AndroidReceiver1 和 AndroidReceiver2类，继承自BroadcastReceiver

     

  import android.app.Notification;

  import android.app.NotificationManager;

  import android.app.PendingIntent;

  import android.content.BroadcastReceiver;

  import android.content.Context;

  import android.content.Intent;

     

  public class AndroidReceiver1 extends BroadcastReceiver {

  Context context;

  public static int NOTIFICATION_ID = 21321;

  @Override

  public void onReceive(Context context, Intent intent) {

  this.context = context;

  showNotification();

  }

  private void showNotification(){

  NotificationManager notificationManager = (NotificationManager)context.getSystemService(android.content.Context.NOTIFICATION_SERVICE);

  Notification notification = new Notification(R.drawable.icon,"在AndroidReceiver1中",System.currentTimeMillis());

  PendingIntent contentIntent = PendingIntent.getActivity(context, 0, new Intent(context,BroadcastReceiverDemo.class), 0);

  notification.setLatestEventInfo(context,"在AndroidReceiver1中",null,contentIntent);

  notificationManager.notify(NOTIFICATION_ID,notification);

  }

  }

     

     

     

     

  import android.app.NotificationManager;

  import android.content.BroadcastReceiver;

  import android.content.Context;

  import android.content.Intent;

     

  public class AndroidReceiver2 extends BroadcastReceiver {

  Context context;

  @Override

  public void onReceive(Context context, Intent intent) {

  this.context = context;

  DeleteNotification();

  }

  private void DeleteNotification(){

  NotificationManager notificationManager =(NotificationManager)context.getSystemService(android.content.Context.NOTIFICATION_SERVICE);

  notificationManager.cancel(AndroidReceiver1.NOTIFICATION_ID);

  }

     

  }

  

  

     

   im@xingquan.org