通知的主要功能是提示功能。例如：簡訊、推送資訊等等。

大體使用步驟：

1.獲取狀態通知欄管理

NotificationManager 是一個系統Service，所以必須通過 getSystemService(NOTIFICATION_SERVICE)方法來獲取。

notificationManager = (NotificationManager) this
				.getSystemService(NOTIFICATION_SERVICE);

2.例項化通知欄構造器NotificationCompat.Builder

3.設定NotificationCompat.Builder

4.設定PendingIntent

5.顯示

方法或引數介紹：

1.PendingIntent

PendingIntent.getBroadcast(context, requestCode, intent, flags)


PendingIntent.getActivities(context, requestCode, intents, flags)


PendingIntent.getService(context, requestCode, intent, flags)


中的flags屬性引數：

FLAG_ONE_SHOT   表示返回的PendingIntent僅能執行一次，執行完後自動取消

FLAG_NO_CREATE     表示如果描述的PendingIntent不存在，並不建立相應的PendingIntent，而是返回NULL

FLAG_CANCEL_CURRENT      表示相應的PendingIntent已經存在，則取消前者，然後建立新的PendingIntent

FLAG_UPDATE_CURRENT     表示更新的PendingIntent

2.notification.flags引數介紹

Notification.FLAG_SHOW_LIGHTS              //三色燈提醒，在使用三色燈提醒時候必須加該標誌符

Notification.FLAG_ONGOING_EVENT          //發起正在執行事件（活動中）

Notification.FLAG_INSISTENT   //讓聲音、振動無限迴圈，直到使用者響應 （取消或者開啟）

Notification.FLAG_ONLY_ALERT_ONCE  //發起Notification後，鈴聲和震動均只執行一次

Notification.FLAG_AUTO_CANCEL      //使用者單擊通知後自動消失

Notification.FLAG_NO_CLEAR          //只有全部清除時，Notification才會清除 ，不清楚該通知(QQ的通知無法清除，就是用的這個)

Notification.FLAG_FOREGROUND_SERVICE    //表示正在執行的服務

使用方法：

在設定完屬性後，設定

Notification notification =builder.build();
notification.flags =Notification.FLAG_ONLY_ALERT_ONCE;

3.setVibrate(long[] pattern)

設定震動，需要許可權.

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

4.builder.setOngoing( )

設定為ture，表示它為一個正在進行的通知。簡單的說，當為ture時，不可以被側滑消失。

***************************************************************************************

使用自定義Notification，就要使用RemoteViews。

***************************************************************************************

使用例項：

圖片：

實現程式碼：

MainActivity.java

public class MainActivity extends Activity {

	Button button, button2;
	NotificationManager notificationManager;
	public final static String NEWS_LISTEN = "broadcast";

	// 用於自定義Notification，點選事件的驗證
	String remoteViewsText = "未點選";

	@Override
	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		notificationManager = (NotificationManager) this
				.getSystemService(NOTIFICATION_SERVICE);

		IntentFilter filter = new IntentFilter();
		filter.addAction(NEWS_LISTEN);
		this.registerReceiver(broadcastReceiver, filter);

	}

	public void click(View v) {

		switch (v.getId()) {
		case R.id.but:// 使用普通的Notification

			Notification.Builder builder = new Notification.Builder(
					MainActivity.this);

			Intent intent = new Intent(MainActivity.this, SecondActivity.class);
			PendingIntent pendingIntent = PendingIntent.getActivity(
					MainActivity.this, 0, intent,
					PendingIntent.FLAG_UPDATE_CURRENT);

			builder.setContentIntent(pendingIntent);
			builder.setSmallIcon(R.drawable.close);// 設定圖示
			builder.setWhen(System.currentTimeMillis());// 設定通知來到的時間
			// builder.setAutoCancel(true);
			builder.setContentTitle("標題");// 設定通知的標題
			builder.setContentText("內容");// 設定通知的內容
			builder.setTicker("狀態列上顯示");// 狀態列上顯示
			builder.setOngoing(true);

			/*
			 * // 設定聲音(手機中的音訊檔案) String path =
			 * Environment.getExternalStorageDirectory() .getAbsolutePath() +
			 * "/Music/a.mp3"; File file = new File(path);
			 * builder.setSound(Uri.fromFile(file));
			 */

			// 獲取Android多媒體庫內的鈴聲
			builder.setSound(Uri.withAppendedPath(
					Audio.Media.INTERNAL_CONTENT_URI, "5"));

			// builder.setVibrate(new long[]{2000,1000,4000}); //需要真機測試
			Notification notification = builder.build();
			// notification.flags =Notification.FLAG_ONGOING_EVENT;

			notificationManager.notify(0, notification);

			break;

		case R.id.but2:// 使用自定義的Notification
			// 3.0之前不支援Button
			MyNotification();

			break;

		case R.id.but3:// 使用下載的Notification,在4.0以後才能使用

			final Notification.Builder builder3 = new Notification.Builder(
					MainActivity.this);
			builder3.setSmallIcon(R.drawable.ic_launcher)
					.setTicker("showProgressBar").setContentInfo("contentInfo")
					.setOngoing(true).setContentTitle("ContentTitle")
					.setContentText("ContentText");
			// 模擬下載過程
			new Thread(new Runnable() {
				@Override
				public void run() {

					int progress = 0;

					for (progress = 0; progress < 100; progress += 5) {
						// 將setProgress的第三個引數設為true即可顯示為無明確進度的進度條樣式
						builder3.setProgress(100, progress, false);

						notificationManager.notify(0, builder3.build());
						try {
							Thread.sleep(1 * 1000);
						} catch (InterruptedException e) {
							System.out.println("sleep failure");
						}
					}
					builder3.setContentTitle("Download complete")
							.setProgress(0, 0, false).setOngoing(false);
					notificationManager.notify(0, builder3.build());

				}
			}).start();

			break;
		case R.id.but4:// 大布局通知在4.1以後才能使用，BigTextStyle

			Notification.BigTextStyle textStyle = new Notification.BigTextStyle();
			textStyle.setBigContentTitle("大標題")
					// 標題
					.setSummaryText("SummaryText")
					.bigText(
							"Big Text!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
									+ "!!!!!!!!!!!"
									+ "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");// 內容
			Notification.Builder builder2 = new Notification.Builder(
					MainActivity.this);
			builder2.setSmallIcon(R.drawable.icon);// 小圖示
			// 大圖示
			builder2.setLargeIcon(BitmapFactory.decodeResource(
					this.getResources(), R.drawable.close));
			builder2.setTicker("showBigView_Text")
					.setContentInfo("contentInfo");
			builder2.setStyle(textStyle);
			builder2.setAutoCancel(true);

			notificationManager.notify(0, builder2.build());

			break;

		case R.id.but5://大布局通知在4.1以後才能使用,大布局圖片
			
			Notification.BigPictureStyle bigPictureStyle = new Notification.BigPictureStyle();
			bigPictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.back));
			
			Notification.Builder builder4 = new Notification.Builder(
					MainActivity.this);
			builder4.setSmallIcon(R.drawable.icon);// 小圖示
			// 大圖示
			builder4.setLargeIcon(BitmapFactory.decodeResource(
					this.getResources(), R.drawable.close));
			builder4.setTicker("showBigView_Picture")
					.setContentInfo("contentInfo");
			builder4.setStyle(bigPictureStyle);
			builder4.setAutoCancel(true);

			notificationManager.notify(0, builder4.build());
			
			break;
			
		case R.id.but6://大布局通知在4.1以後才能使用，InboxStyle
			
			Notification.InboxStyle inboxStyle = new Notification.InboxStyle();
			inboxStyle.setBigContentTitle("InboxStyle");
			inboxStyle.setSummaryText("Test");
			for(int i =0 ;i<5;i++){
				inboxStyle.addLine("new:"+i);
			}
			
			Notification.Builder builder5 = new Notification.Builder(
					MainActivity.this);
			builder5.setSmallIcon(R.drawable.icon);// 小圖示
			// 大圖示
			builder5.setLargeIcon(BitmapFactory.decodeResource(
					this.getResources(), R.drawable.close));
			builder5.setTicker("showBigView_InboxStyle")
					.setContentInfo("contentInfo");
			builder5.setStyle(inboxStyle);
			builder5.setAutoCancel(true);

			notificationManager.notify(0, builder5.build());
			
			
			break;

		}

	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		// 取消廣播接收
		this.unregisterReceiver(broadcastReceiver);
	}

	/**
	 * 自定義Notification
	 */
	public void MyNotification() {

		RemoteViews remoteViews = new RemoteViews(getPackageName(),
				R.layout.form);
		remoteViews.setTextViewText(R.id.tv_form, remoteViewsText);

		Intent intent2 = new Intent(MainActivity.NEWS_LISTEN);

		// 使用廣播，所以INTENT必須用getBroadcast方法
		PendingIntent pendingIntent2 = PendingIntent.getBroadcast(
				MainActivity.this, 1, intent2,
				PendingIntent.FLAG_UPDATE_CURRENT);

		// 繫結
		remoteViews.setOnClickPendingIntent(R.id.but_form, pendingIntent2);

		Notification.Builder builderMain = new Notification.Builder(
				MainActivity.this);

		builderMain
				.setContent(remoteViews)
				.setSmallIcon(R.drawable.icon)
				.setLargeIcon(
						BitmapFactory.decodeResource(this.getResources(),
								R.drawable.open)).setOngoing(true)
				.setTicker("music is playing");
		notificationManager.notify(0, builderMain.build());
	}

	// 廣播接收器(自定義Notification使用到)
	BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {

		@Override
		public void onReceive(Context c, Intent intent) {

			if (intent.getAction().equals(NEWS_LISTEN)) {

				remoteViewsText = "已點選";
				MyNotification();

			}
		}
	};
}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >

    <Button
        android:id="@+id/but"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification one" />

    <Button
        android:id="@+id/but2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification two" />

    <Button
        android:id="@+id/but3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification three" />

    <Button
        android:id="@+id/but4"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification four" />

    <Button
        android:id="@+id/but5"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification five" />

    <Button
        android:id="@+id/but6"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="click"
        android:text="notification six" />

</LinearLayout>

form.xml（自定義通知的樣式）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/but_form"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="嘻嘻" />
    
    
    <TextView 
        android:id="@+id/tv_form"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="無"/>

</LinearLayout>

SecondActivity.java 只是一個activity。