Android example source code file (StatusBarNotifications.java)

This example Android source code file (StatusBarNotifications.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, app, application, button, charsequence, content, mood_notifications, notification, notificationmanager, override, pendingintent, remoteviews, statusbarnotifications, string, ui, widget

The StatusBarNotifications.java Android example source code

/*
 * Copyright (C) 2007 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 com.example.android.apis.R;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RemoteViews;

/**
 * Demonstrates adding notifications to the status bar
 */
public class StatusBarNotifications extends Activity {

    private NotificationManager mNotificationManager;

    // Use our layout id for a unique identifier
    private static int MOOD_NOTIFICATIONS = R.layout.status_bar_notifications;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.status_bar_notifications);

        Button button;

        // Get the notification manager serivce.
        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        button = (Button) findViewById(R.id.happy);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_happy, R.string.status_bar_notifications_happy_message,
                        false);
            }
        });

        button = (Button) findViewById(R.id.neutral);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_neutral, R.string.status_bar_notifications_ok_message,
                        false);
            }
        });

        button = (Button) findViewById(R.id.sad);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_sad, R.string.status_bar_notifications_sad_message, false);
            }
        });

        button = (Button) findViewById(R.id.happyMarquee);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_happy, R.string.status_bar_notifications_happy_message,
                        true);
            }
        });

        button = (Button) findViewById(R.id.neutralMarquee);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_neutral, R.string.status_bar_notifications_ok_message, true);
            }
        });

        button = (Button) findViewById(R.id.sadMarquee);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMood(R.drawable.stat_sad, R.string.status_bar_notifications_sad_message, true);
            }
        });

        button = (Button) findViewById(R.id.happyViews);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMoodView(R.drawable.stat_happy, R.string.status_bar_notifications_happy_message);
            }
        });

        button = (Button) findViewById(R.id.neutralViews);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMoodView(R.drawable.stat_neutral, R.string.status_bar_notifications_ok_message);
            }
        });

        button = (Button) findViewById(R.id.sadViews);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setMoodView(R.drawable.stat_sad, R.string.status_bar_notifications_sad_message);
            }
        });
        
        button = (Button) findViewById(R.id.defaultSound);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setDefault(Notification.DEFAULT_SOUND);
            }
        });
        
        button = (Button) findViewById(R.id.defaultVibrate);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setDefault(Notification.DEFAULT_VIBRATE);
            }
        });
        
        button = (Button) findViewById(R.id.defaultAll);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                setDefault(Notification.DEFAULT_ALL);
            }
        });
        
        button = (Button) findViewById(R.id.clear);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                mNotificationManager.cancel(R.layout.status_bar_notifications);
            }
        });
    }

    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;
    }
    
    private void setMood(int moodId, int textId, boolean showTicker) {
        // 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);
    }

    private void setMoodView(int moodId, int textId) {
        // 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 = makeMoodIntent(moodId);

        // 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);
    }
    
    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
    }    
}