v4/app/NotificationCompat.java

/*
 * Copyright (C) 2012 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 android.support.v4.app;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Build;
import android.widget.RemoteViews;

public class NotificationCompat {
    /**
     * Bit to be bitwise-ored into the {@link Notification#flags} field that should be set if
     * this notification represents a high-priority event that may be shown to the user even
     * if notifications are otherwise unavailable (that is, when the status bar is hidden).
     * This flag is ideally used in conjunction with fullScreenIntent.
     *
     * <p>This will only be respected on API level 9 and above.</p>
     */
    public static final int FLAG_HIGH_PRIORITY = 0x00000080;

    private static final NotificationCompatImpl IMPL;

    interface NotificationCompatImpl {
        public Notification getNotification(Builder b);
    }

    static class NotificationCompatImplBase implements NotificationCompatImpl {
        public Notification getNotification(Builder b) {
            Notification result = (Notification) b.mNotification;
            result.setLatestEventInfo(b.mContext, b.mContentTitle,
                    b.mContentText, b.mContentIntent);
            return result;
        }
    }

    static class NotificationCompatImplHoneycomb implements NotificationCompatImpl {
        public Notification getNotification(Builder b) {
            return NotificationCompatHoneycomb.add(b.mContext, b.mNotification,
                    b.mContentTitle, b.mContentText, b.mContentInfo, b.mTickerView,
                    b.mNumber, b.mContentIntent, b.mFullScreenIntent, b.mLargeIcon);
        }
    }

    static {
        if (Build.VERSION.SDK_INT >= 11) {
            IMPL = new NotificationCompatImplHoneycomb();
        } else {
            IMPL = new NotificationCompatImplBase();
        }
    }

    /**
     * Builder class for {@link Notification} objects.  Allows easier control over
     * all the flags, as well as help constructing the typical notification layouts.
     */
    public static class Builder {
        Context mContext;

        CharSequence mContentTitle;
        CharSequence mContentText;
        PendingIntent mContentIntent;
        PendingIntent mFullScreenIntent;
        RemoteViews mTickerView;
        Bitmap mLargeIcon;
        CharSequence mContentInfo;
        int mNumber;

        Notification mNotification = new Notification();

        /**
         * Constructor.
         *
         * Automatically sets the when field to {@link System#currentTimeMillis()
         * System.currentTimeMillis()} and the audio stream to the
         * {@link Notification#STREAM_DEFAULT}.
         *
         * @param context A {@link Context} that will be used to construct the
         *      RemoteViews. The Context will not be held past the lifetime of this
         *      Builder object.
         */
        public Builder(Context context) {
            mContext = context;

            // Set defaults to match the defaults of a Notification
            mNotification.when = System.currentTimeMillis();
            mNotification.audioStreamType = Notification.STREAM_DEFAULT;
        }

        /**
         * Set the time that the event occurred.  Notifications in the panel are
         * sorted by this time.
         */
        public Builder setWhen(long when) {
            mNotification.when = when;
            return this;
        }

        /**
         * Set the small icon to use in the notification layouts.  Different classes of devices
         * may return different sizes.  See the UX guidelines for more information on how to
         * design these icons.
         *
         * @param icon A resource ID in the application's package of the drawble to use.
         */
        public Builder setSmallIcon(int icon) {
            mNotification.icon = icon;
            return this;
        }

        /**
         * A variant of {@link #setSmallIcon(int) setSmallIcon(int)} that takes an additional
         * level parameter for when the icon is a {@link android.graphics.drawable.LevelListDrawable
         * LevelListDrawable}.
         *
         * @param icon A resource ID in the application's package of the drawble to use.
         * @param level The level to use for the icon.
         *
         * @see android.graphics.drawable.LevelListDrawable
         */
        public Builder setSmallIcon(int icon, int level) {
            mNotification.icon = icon;
            mNotification.iconLevel = level;
            return this;
        }

        /**
         * Set the title (first row) of the notification, in a standard notification.
         */
        public Builder setContentTitle(CharSequence title) {
            mContentTitle = title;
            return this;
        }

        /**
         * Set the text (second row) of the notification, in a standard notification.
         */
        public Builder setContentText(CharSequence text) {
            mContentText = text;
            return this;
        }

        /**
         * Set the large number at the right-hand side of the notification.  This is
         * equivalent to setContentInfo, although it might show the number in a different
         * font size for readability.
         */
        public Builder setNumber(int number) {
            mNumber = number;
            return this;
        }

        /**
         * Set the large text at the right-hand side of the notification.
         */
        public Builder setContentInfo(CharSequence info) {
            mContentInfo = info;
            return this;
        }

        /**
         * Set the progress this notification represents, which may be
         * represented as a {@link ProgressBar}.
         */
        /* TODO
        public Builder setProgress(int max, int progress, boolean indeterminate) {
            mProgressMax = max;
            mProgress = progress;
            mProgressIndeterminate = indeterminate;
            return this;
        }*/

        /**
         * Supply a custom RemoteViews to use instead of the standard one.
         */
        public Builder setContent(RemoteViews views) {
            mNotification.contentView = views;
            return this;
        }

        /**
         * Supply a {@link PendingIntent} to send when the notification is clicked.
         * If you do not supply an intent, you can now add PendingIntents to individual
         * views to be launched when clicked by calling {@link RemoteViews#setOnClickPendingIntent
         * RemoteViews.setOnClickPendingIntent(int,PendingIntent)}.  Be sure to
         * read {@link Notification#contentIntent Notification.contentIntent} for
         * how to correctly use this.
         */
        public Builder setContentIntent(PendingIntent intent) {
            mContentIntent = intent;
            return this;
        }

        /**
         * Supply a {@link PendingIntent} to send when the notification is cleared by the user
         * directly from the notification panel.  For example, this intent is sent when the user
         * clicks the "Clear all" button, or the individual "X" buttons on notifications.  This
         * intent is not sent when the application calls {@link NotificationManager#cancel
         * NotificationManager.cancel(int)}.
         */
        public Builder setDeleteIntent(PendingIntent intent) {
            mNotification.deleteIntent = intent;
            return this;
        }

        /**
         * An intent to launch instead of posting the notification to the status bar.
         * Only for use with extremely high-priority notifications demanding the user's
         * <strong>immediate</strong> attention, such as an incoming phone call or
         * alarm clock that the user has explicitly set to a particular time.
         * If this facility is used for something else, please give the user an option
         * to turn it off and use a normal notification, as this can be extremely
         * disruptive.
         *
         * @param intent The pending intent to launch.
         * @param highPriority Passing true will cause this notification to be sent
         *          even if other notifications are suppressed.
         */
        public Builder setFullScreenIntent(PendingIntent intent, boolean highPriority) {
            mFullScreenIntent = intent;
            setFlag(FLAG_HIGH_PRIORITY, highPriority);
            return this;
        }

        /**
         * Set the text that is displayed in the status bar when the notification first
         * arrives.
         */
        public Builder setTicker(CharSequence tickerText) {
            mNotification.tickerText = tickerText;
            return this;
        }

        /**
         * Set the text that is displayed in the status bar when the notification first
         * arrives, and also a RemoteViews object that may be displayed instead on some
         * devices.
         */
        public Builder setTicker(CharSequence tickerText, RemoteViews views) {
            mNotification.tickerText = tickerText;
            mTickerView = views;
            return this;
        }

        /**
         * Set the large icon that is shown in the ticker and notification.
         */
        public Builder setLargeIcon(Bitmap icon) {
            mLargeIcon = icon;
            return this;
        }

        /**
         * Set the sound to play.  It will play on the default stream.
         */
        public Builder setSound(Uri sound) {
            mNotification.sound = sound;
            mNotification.audioStreamType = Notification.STREAM_DEFAULT;
            return this;
        }

        /**
         * Set the sound to play.  It will play on the stream you supply.
         *
         * @see #STREAM_DEFAULT
         * @see AudioManager for the <code>STREAM_</code> constants.
         */
        public Builder setSound(Uri sound, int streamType) {
            mNotification.sound = sound;
            mNotification.audioStreamType = streamType;
            return this;
        }

        /**
         * Set the vibration pattern to use.
         *
         * @see android.os.Vibrator for a discussion of the <code>pattern</code>
         * parameter.
         */
        public Builder setVibrate(long[] pattern) {
            mNotification.vibrate = pattern;
            return this;
        }

        /**
         * Set the argb value that you would like the LED on the device to blnk, as well as the
         * rate.  The rate is specified in terms of the number of milliseconds to be on
         * and then the number of milliseconds to be off.
         */
        public Builder setLights(int argb, int onMs, int offMs) {
            mNotification.ledARGB = argb;
            mNotification.ledOnMS = onMs;
            mNotification.ledOffMS = offMs;
            boolean showLights = mNotification.ledOnMS != 0 && mNotification.ledOffMS != 0;
            mNotification.flags = (mNotification.flags & ~Notification.FLAG_SHOW_LIGHTS) |
                    (showLights ? Notification.FLAG_SHOW_LIGHTS : 0);
            return this;
        }

        /**
         * Set whether this is an ongoing notification.
         *
         * <p>Ongoing notifications differ from regular notifications in the following ways:
         * <ul>
         *   <li>Ongoing notifications are sorted above the regular notifications in the
         *   notification panel.</li>
         *   <li>Ongoing notifications do not have an 'X' close button, and are not affected
         *   by the "Clear all" button.
         * </ul>
         */
        public Builder setOngoing(boolean ongoing) {
            setFlag(Notification.FLAG_ONGOING_EVENT, ongoing);
            return this;
        }

        /**
         * Set this flag if you would only like the sound, vibrate
         * and ticker to be played if the notification is not already showing.
         */
        public Builder setOnlyAlertOnce(boolean onlyAlertOnce) {
            setFlag(Notification.FLAG_ONLY_ALERT_ONCE, onlyAlertOnce);
            return this;
        }

        /**
         * Setting this flag will make it so the notification is automatically
         * canceled when the user clicks it in the panel.  The PendingIntent
         * set with {@link #setDeleteIntent} will be broadcast when the notification
         * is canceled.
         */
        public Builder setAutoCancel(boolean autoCancel) {
            setFlag(Notification.FLAG_AUTO_CANCEL, autoCancel);
            return this;
        }

        /**
         * Set the default notification options that will be used.
         * <p>
         * The value should be one or more of the following fields combined with
         * bitwise-or:
         * {@link Notification#DEFAULT_SOUND}, {@link Notification#DEFAULT_VIBRATE},
         * {@link Notification#DEFAULT_LIGHTS}.
         * <p>
         * For all default values, use {@link Notification#DEFAULT_ALL}.
         */
        public Builder setDefaults(int defaults) {
            mNotification.defaults = defaults;
            if ((defaults & Notification.DEFAULT_LIGHTS) != 0) {
                mNotification.flags |= Notification.FLAG_SHOW_LIGHTS;
            }
            return this;
        }

        private void setFlag(int mask, boolean value) {
            if (value) {
                mNotification.flags |= mask;
            } else {
                mNotification.flags &= ~mask;
            }
        }

        /**
         * Combine all of the options that have been set and return a new {@link Notification}
         * object.
         */
        public Notification getNotification() {
            return (Notification) IMPL.getNotification(this);
        }
    }
}