0703-APP-Notification-statue-bar

1.展示显示textTicker和仅仅有icon的两种情况：当參数showTicker为true时显示否则不显示

        // In this sample, we'll use the same text for the ticker and the expanded notification
        CharSequence text = getText(textId);

        // choose the ticker text
        String tickerText = showTicker ? getString(textId) : null;

        // Set the icon, scrolling text and timestamp
        Notification notification = new Notification(moodId, tickerText,
                System.currentTimeMillis());

        // Set the info for the views that show in the notification panel.
        notification.setLatestEventInfo(this, getText(R.string.status_bar_notifications_mood_title),
                       text, makeMoodIntent(moodId));

        // Send the notification.
        // We use a layout id because it is a unique number.  We use it later to cancel.
        mNotificationManager.notify(R.layout.status_bar_notifications, notification);
    

2.展示通过view创建notifaction

		// Instead of the normal constructor, we're going to use the one with no
		// args and fill
		// in all of the data ourselves. The normal one uses the default layout
		// for notifications.
		// You probably want that in most cases, but if you want to do something
		// custom, you
		// can set the contentView field to your own RemoteViews object.
		Notification notif = new Notification();

		// This is who should be launched if the user selects our notification.
		notif.contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, NotificationDisplay.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK).putExtra("moodimg", moodId), PendingIntent.FLAG_UPDATE_CURRENT);

		// In this sample, we'll use the same text for the ticker and the
		// expanded notification
		CharSequence text = getText(textId);
		notif.tickerText = text;

		// the icon for the status bar
		notif.icon = moodId;

		// our custom view
		RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.status_bar_balloon);
		contentView.setTextViewText(R.id.text, text);
		contentView.setImageViewResource(R.id.icon, moodId);
		notif.contentView = contentView;

		// we use a string id because is a unique number. we use it later to
		// cancel the
		// notification
		mNotificationManager.notify(R.layout.status_bar_notifications, notif);
	

3.notifacation 设置声音和震动

 private void setDefault(int defaults) {
        
        // This method sets the defaults on the notification before posting it.
        
        // This is who should be launched if the user selects our notification.
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, StatusBarNotifications.class), 0);

        // In this sample, we'll use the same text for the ticker and the expanded notification
        CharSequence text = getText(R.string.status_bar_notifications_happy_message);

        final Notification notification = new Notification(
                R.drawable.stat_happy,       // the icon for the status bar
                text,                        // the text to display in the ticker
                System.currentTimeMillis()); // the timestamp for the notification

        notification.setLatestEventInfo(
                this,                        // the context to use
                getText(R.string.status_bar_notifications_mood_title),
                                             // the title for the notification
                text,                        // the details to display in the notification
                contentIntent);              // the contentIntent (see above)

        notification.defaults = defaults;
        
        mNotificationManager.notify(
                   R.layout.status_bar_notifications, // we use a string id because it is a unique
                                                      // number.  we use it later to cancel the
                   notification);                     // notification
    }    

公共代码（被调用的代码）

  private PendingIntent makeMoodIntent(int moodId) {
        // The PendingIntent to launch our activity if the user selects this
        // notification.  Note the use of FLAG_UPDATE_CURRENT so that if there
        // is already an active matching pending intent, we will update its
        // extras to be the ones passed in here.
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, NotificationDisplay.class)
                        .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                        .putExtra("moodimg", moodId),
                PendingIntent.FLAG_UPDATE_CURRENT);
        return contentIntent;
    }

4.常驻通知的样例

/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.apis.app; import android.app.Activity; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.content.Intent; import android.os.Bundle; import android.os.IBinder; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; // Need the following import to get access to the app resources, since this // class is in a sub-package. import com.example.android.apis.R; /** * This is an example of implementing an application service that can * run in the "foreground". It shows how to code this to work well by using * the improved Android 2.0 APIs when available and otherwise falling back * to the original APIs. Yes: you can take this exact code, compile it * against the Android 2.0 SDK, and it will against everything down to * Android 1.0. */ public class ForegroundService extends Service { static final String ACTION_FOREGROUND = "com.example.android.apis.FOREGROUND"; static final String ACTION_BACKGROUND = "com.example.android.apis.BACKGROUND"; private static final Class[] mStartForegroundSignature = new Class[] { int.class, Notification.class}; private static final Class[] mStopForegroundSignature = new Class[] { boolean.class}; private NotificationManager mNM; private Method mStartForeground; private Method mStopForeground; private Object[] mStartForegroundArgs = new Object[2]; private Object[] mStopForegroundArgs = new Object[1]; /** * This is a wrapper around the new startForeground method, using the older * APIs if it is not available. */ void startForegroundCompat(int id, Notification notification) { // If we have the new startForeground API, then use it. if (mStartForeground != null) { mStartForegroundArgs[0] = Integer.valueOf(id); mStartForegroundArgs[1] = notification; try { mStartForeground.invoke(this, mStartForegroundArgs); } catch (InvocationTargetException e) { // Should not happen. Log.w("ApiDemos", "Unable to invoke startForeground", e); } catch (IllegalAccessException e) { // Should not happen. Log.w("ApiDemos", "Unable to invoke startForeground", e); } return; } // Fall back on the old API. setForeground(true); mNM.notify(id, notification); } /** * This is a wrapper around the new stopForeground method, using the older * APIs if it is not available. */ void stopForegroundCompat(int id) { // If we have the new stopForeground API, then use it. if (mStopForeground != null) { mStopForegroundArgs[0] = Boolean.TRUE; try { mStopForeground.invoke(this, mStopForegroundArgs); } catch (InvocationTargetException e) { // Should not happen. Log.w("ApiDemos", "Unable to invoke stopForeground", e); } catch (IllegalAccessException e) { // Should not happen. Log.w("ApiDemos", "Unable to invoke stopForeground", e); } return; } // Fall back on the old API. Note to cancel BEFORE changing the // foreground state, since we could be killed at that point. mNM.cancel(id); setForeground(false); } @Override public void onCreate() { mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); try { com.example.android.apis.Log.log(getClass().getName()); mStartForeground = getClass().getMethod("startForeground", mStartForegroundSignature); com.example.android.apis.Log.log(mStartForeground.getName()); mStopForeground = getClass().getMethod("stopForeground", mStopForegroundSignature); } catch (NoSuchMethodException e) { // Running on an older platform. mStartForeground = mStopForeground = null; } } @Override public void onDestroy() { // Make sure our notification is gone. stopForegroundCompat(R.string.foreground_service_started); } // This is the old onStart method that will be called on the pre-2.0 // platform. On 2.0 or later we override onStartCommand() so this // method will not be called. @Override public void onStart(Intent intent, int startId) { handleCommand(intent); } @Override public int onStartCommand(Intent intent, int flags, int startId) { handleCommand(intent); // We want this service to continue running until it is explicitly // stopped, so return sticky. return START_STICKY; } void handleCommand(Intent intent) { if (ACTION_FOREGROUND.equals(intent.getAction())) { // In this sample, we'll use the same text for the ticker and the expanded notification CharSequence text = getText(R.string.foreground_service_started); // Set the icon, scrolling text and timestamp Notification notification = new Notification(R.drawable.stat_sample, text, System.currentTimeMillis()); // The PendingIntent to launch our activity if the user selects this notification PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, Controller.class), 0); // Set the info for the views that show in the notification panel. notification.setLatestEventInfo(this, getText(R.string.local_service_label), text, contentIntent); startForegroundCompat(R.string.foreground_service_started, notification); } else if (ACTION_BACKGROUND.equals(intent.getAction())) { stopForegroundCompat(R.string.foreground_service_started); } } @Override public IBinder onBind(Intent intent) { return null; } // ---------------------------------------------------------------------- /** * <p>Example of explicitly starting and stopping the {@link ForegroundService}. * * <p>Note that this is implemented as an inner class only keep the sample * all together; typically this code would appear in some separate class. */ public static class Controller extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.foreground_service_controller); // Watch for button clicks. Button button = (Button)findViewById(R.id.start_foreground); button.setOnClickListener(mForegroundListener); button = (Button)findViewById(R.id.start_background); button.setOnClickListener(mBackgroundListener); button = (Button)findViewById(R.id.stop); button.setOnClickListener(mStopListener); } private OnClickListener mForegroundListener = new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(ForegroundService.ACTION_FOREGROUND); intent.setClass(Controller.this, ForegroundService.class); startService(intent); } }; private OnClickListener mBackgroundListener = new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(ForegroundService.ACTION_BACKGROUND); intent.setClass(Controller.this, ForegroundService.class); startService(intent); } }; private OnClickListener mStopListener = new OnClickListener() { public void onClick(View v) { stopService(new Intent(Controller.this, ForegroundService.class)); } }; } } 

凝视notification.flags能够设置notification能否够点击消除，是否自己主动消除等状态