android整合--notification推送通知

到目前为止，想必大家已经都熟悉使用Toast去给用户显示信息了。尽管使用Toast很方便，但是Toast显示的通知并不是永久存储的。它只在屏幕上显示一小段时间，然后就消失了。如果它包含一些特别重要的信息，如果用户没有观察屏幕，那么用户就很容易错过它。

对于那些重要的信息，应该采用一种更加持久保存的方法。在这种情况下，应该使用NotificationMnanger（消息管理器）去显示一个长久的信息，这个消息被显示在了StatusBar（状态栏）上面，使用用户能够很容易地看见。

接下来展示如何发送一个Notification通知。

首先建个工程Notification

先不解释 上代码

public class NotificationsActivity extends Activity {    /** Called when the activity is first created. */int notificationId = 1;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);            }        public void onclick(View view){    displayNotification();    }    public void displayNotification(){    //设置点击通知跳转页面    Intent intent = new Intent(this,NotificationView.class);    intent.putExtra("notificationid", notificationId);    //得到pendingintent  延迟执行intent    PendingIntent pendintent = PendingIntent.getActivity(this, 0, intent, 0);    //获取通知管理器并设置图标与显示时间    NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);    Notification notfi = new Notification(R.drawable.icon,"today there is a meeting",System.currentTimeMillis());    //设置通知标题与内容    CharSequence form = "System notification";    CharSequence message = "Meeting is at 3pm";    notfi.setLatestEventInfo(this, form, message, pendintent);     //---100ms delay, vibrate for 250ms, pause for 100 ms and          // then vibrate for 500ms---      //震动提示    notfi.vibrate = new long[]{100,250,100,500};    nm.notify(notificationId, notfi);    }}

点击通知转到这个activity

public class NotificationView extends Activity {/* (non-Javadoc) * @see android.app.Activity#onCreate(android.os.Bundle) */@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.notification);NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);nm.cancel(getIntent().getExtras().getInt("notificationId"));}}

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><TextView      android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/hello"    />       <Button    android:id="@+id/btnnoti"    android:layout_width="fill_parent"        android:layout_height="wrap_content"          android:onClick="onclick"       android:text="点击通知"        /></LinearLayout>

notification.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  android:orientation="vertical">   <TextView          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:text="Here are the details for the notification..." />  </LinearLayout>

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.test.Notifications"      android:versionCode="1"      android:versionName="1.0">    <uses-sdk android:minSdkVersion="7" />    <application android:icon="@drawable/icon" android:label="@string/app_name">        <activity android:name=".NotificationsActivity"                  android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity><activity android:name=".NotificationView"               android:label="notification detail">               <intent-filter>                   <action android:name="android.intent.action.MAIN" />                      <category android:name="android.intent.category.DEFAULT" />               </intent-filter>               </activity>    </application>      <uses-permission android:name="android.permission.VIBRATE"/> </manifest>

大致思路为

1 设置通知跳转后的intent和activity，通知id

Intent intent = new Intent(this,NotificationView.class);
  intent.putExtra("notificationid", notificationId);

2 得到pendingintent（后篇讲一下pengdingintent 和intent的区别）

PendingIntent pendintent = PendingIntent.getActivity(this, 0    , intent, 0);

3     获取通知管理器并设置图标与显示时间
        NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        Notification notfi = new Notification(R.drawable.icon,"today there is a meeting",System.currentTimeMillis());

4     //设置通知标题与内容
        CharSequence form = "System notification";
        CharSequence message = "Meeting is at 3pm";
        notfi.setLatestEventInfo(this, form, message, pendintent);

5     //震动提示(可加可不加)
        notfi.vibrate = new long[]{100,250,100,500};
        nm.notify(notificationId, notfi);