如何更新自定义布局通知操作

Question

我有一个完全使用自定义布局的通知，但是我不知道如何在特定情况下更新操作

我正在使用此通知来启动和停止应用程序之外的媒体播放器，但我需要某种更新操作（待处理意图按钮）

这是代码：

@Override
public void onCreate() {
    super.onCreate();
    showNotification();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if (intent.getAction().equals(Constants.ACTION.PLAY_ACTION)) {
        startPlaying();
    }else if (intent.getAction().equals(Constants.ACTION.STOP_ACTION)) {
        stopPlaying();
    }
    return START_STICKY;
}
private void showNotification() {
    // Using RemoteViews to bind custom layouts into Notification
    RemoteViews views = new RemoteViews(getPackageName(),
            R.layout.status_bar);
    RemoteViews bigViews = new RemoteViews(getPackageName(),
            R.layout.status_bar_expanded);

    views.setViewVisibility(R.id.status_bar_icon, View.VISIBLE);
    views.setViewVisibility(R.id.status_bar_album_art, View.GONE);
    bigViews.setImageViewBitmap(R.id.status_bar_album_art,
            Constants.getDefaultAlbumArt(this));
    Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
            | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
            notificationIntent, 0);
    Intent playIntent = new Intent(this, IZIGaapsCustomNotification.class);
    playIntent.setAction(Constants.ACTION.PLAY_ACTION);
    PendingIntent pplayIntent = PendingIntent.getService(this, 0,
            playIntent, 0);
    Intent nextIntent = new Intent(this, IZIGaapsCustomNotification.class);
    nextIntent.setAction(Constants.ACTION.STOP_ACTION);
    PendingIntent pnextIntent = PendingIntent.getService(this, 0,
            nextIntent, 0);

    //Whenever i hit play, beneath buttons (actions) should appear
    views.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);
    bigViews.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);

    //this should be appear next to above button(when above button clicked)
    views.setOnClickPendingIntent(R.id.status_bar_next, pstopIntent);
    bigViews.setOnClickPendingIntent(R.id.status_bar_next, pstopIntent);

    views.setTextViewText(R.id.status_bar_track_name, "Song Title");
    bigViews.setTextViewText(R.id.status_bar_track_name, "Song Title");
    views.setTextViewText(R.id.status_bar_artist_name, "Artist Name");
    bigViews.setTextViewText(R.id.status_bar_artist_name, "Artist Name");

    status = new Notification.Builder(this).build();
    status.contentView = views;
    status.bigContentView = bigViews;
    status.flags = Notification.FLAG_ONGOING_EVENT;
    status.icon = R.drawable.ic_launcher;
    status.contentIntent = pendingIntent;
    startForeground(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE, status);
}

}

任何帮助都会赞赏

Answer 1

这是如何更新自定义通知

的示例

private static final int NOTIF_ID = 1234;
private NotificationCompat.Builder mBuilder;
private NotificationManager mNotificationManager;
private RemoteViews mRemoteViews;
private Notification mNotification;
private void setUpNotification(){
    mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    // we need to build a basic notification first, then update it
    Intent intentNotif = new Intent(this, MainActivity.class);
    intentNotif.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intentNotif, PendingIntent.FLAG_UPDATE_CURRENT);
Intent playIntent = new Intent(this, IZIGaapsCustomNotification.class);
playIntent.setAction(Constants.ACTION.PLAY_ACTION);
PendingIntent pplayIntent = PendingIntent.getService(this, 0,
        playIntent, 0);
    // notification's layout
    mRemoteViews = new RemoteViews(getPackageName(), R.layout.custom_notification_small);
    // notification's icon
    mRemoteViews.setImageViewResource(R.id.status_bar_play, R.drawable.play);
mRemoteViews.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);
    mBuilder = new NotificationCompat.Builder(this);
    CharSequence ticker = getResources().getString(R.string.ticker_text);
    int apiVersion = Build.VERSION.SDK_INT;
    if (apiVersion < VERSION_CODES.HONEYCOMB) {
        mNotification = new Notification(R.drawable.ic_launcher, ticker, System.currentTimeMillis());
        mNotification.contentView = mRemoteViews;
        mNotification.contentIntent = pendIntent;
        mNotification.flags |= Notification.FLAG_NO_CLEAR; //Do not clear the notification
        mNotification.defaults |= Notification.DEFAULT_LIGHTS;
        // starting service with notification in foreground mode
        startForeground(NOTIF_ID, mNotification);
    }else if (apiVersion >= VERSION_CODES.HONEYCOMB) {
        mBuilder.setSmallIcon(R.drawable.ic_launcher)
                .setAutoCancel(false)
                .setOngoing(true)
                .setContentIntent(pendIntent)
                .setContent(mRemoteViews)
                .setTicker(ticker);
        // starting service with notification in foreground mode
        startForeground(NOTIF_ID, mBuilder.build());
    }
}

使用此方法更新回收器中的通知UI以播放或暂停将操作发送到此方法

 private void updateNotification(String action ){
        int api = Build.VERSION.SDK_INT;
        //update action 
 Intent nextIntent = new Intent(this, IZIGaapsCustomNotification.class);
    nextIntent.setAction(action);
    PendingIntent pnextIntent = PendingIntent.getService(this, 0,
            nextIntent, 0);
        // update the icon
        mRemoteViews.setImageViewResource(R.id.status_bar_play, R.drawable.icon_off2);
mRemoteViews.setOnClickPendingIntent(R.id.status_bar_play, pnextIntent);
        // update the notification
        if (api < VERSION_CODES.HONEYCOMB) {
            mNotificationManager.notify(NOTIF_ID, mNotification);
        }else if (api >= VERSION_CODES.HONEYCOMB) {
            mNotificationManager.notify(NOTIF_ID, mBuilder.build());
        }
    }