实现扩展和折叠通知android

Question

我需要在Android 4.0及更高版本的状态栏中实现扩展和折叠通知。我在google上搜索了这个，但没有得到任何代码解决方案实现有没有人知道如何实现这一点

先感谢您

Answer 1

可扩展的Notification是Notification Big View的一个特例。如果Big View不在通知抽屉的顶部，则它显示为“已关闭”并可通过滑动进行扩展。来自Android开发者的报价：

通知的大视图仅在通知展开时出现，当通知位于通知抽屉的顶部时，或者当用户使用手势展开通知时，会发生通知。从Android 4.1开始提供扩展通知。

Big View Notification可以创建如下：

Notification notification = new Notification.BigTextStyle(builder)
.bigText(myText).build();

要么

Notification notification = new Notification.BigPictureStyle(builder)
.bigPicture(
  BitmapFactory.decodeResource(getResources(),
    R.drawable.my_picture)).build();

Here是一个教程。

Answer 2

Notification noti = new Notification.Builder()
... // The same notification properties as the others
.setStyle(new Notification.BigPictureStyle().bigPicture(mBitmap))
.build();

你改变了

.setStyle(new NotificationCompat.BigTextStyle().bigText(th_alert))

随着公告OK !!!

notification = new NotificationCompat.Builder(context)

这是一个例子：

您可以设置代码

Intent intent = new Intent(context, ReserveStatusActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
intent = new Intent(String.valueOf(PushActivity.class));
intent.putExtra("message", MESSAGE);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addParentStack(PushActivity.class);
stackBuilder.addNextIntent(intent);
// PendingIntent pendingIntent =
stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

// android.support.v4.app.NotificationCompat.BigTextStyle bigStyle = new     NotificationCompat.BigTextStyle();
// bigStyle.bigText((CharSequence) context);

notification = new NotificationCompat.Builder(context)
    .setSmallIcon(R.mipmap.ic_launcher)
    .setContentTitle(th_title)
    .setContentText(th_alert)
    .setAutoCancel(true)
 // .setStyle(new Notification.BigTextStyle().bigText(th_alert)  ตัวเก่า
 // .setStyle(new NotificationCompat.BigTextStyle().bigText(th_title))
    .setStyle(new NotificationCompat.BigTextStyle().bigText(th_alert))
    .setContentIntent(pendingIntent)
    .setNumber(++numMessages)
    .build();

notification.sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
notificationManager.notify(1000, notification);

要么

 private void sendNotification(RemoteMessage.Notification notification, Map<String, String> data) {
        Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.logo);

        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
               // .setContentTitle(notification.getTitle())
                .setContentTitle(getResources().getText(R.string.app_name))
                .setContentText(notification.getBody())
                .setAutoCancel(true)
                .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                .setContentIntent(pendingIntent)
                .setStyle(new NotificationCompat.BigTextStyle().bigText(notification.getBody()))
                .setContentInfo(notification.getTitle())
                .setLargeIcon(icon)
                .setColor(Color.RED)
                .setSmallIcon(R.drawable.logo);

        try {
            String picture_url = data.get("picture_url");
            if (picture_url != null && !"".equals(picture_url)) {
                URL url = new URL(picture_url);
                Bitmap bigPicture = BitmapFactory.decodeStream(url.openConnection().getInputStream());
                notificationBuilder.setStyle(
                        new NotificationCompat.BigPictureStyle().bigPicture(bigPicture).setSummaryText(notification.getBody())
                );
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        notificationBuilder.setDefaults(Notification.DEFAULT_VIBRATE);
        notificationBuilder.setLights(Color.YELLOW, 1000, 300);

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(0, notificationBuilder.build());
    }

Answer 3

我们无法在以下android 4.1版本中创建可扩展通知。但是我们可以做到这一点，我们可以堆叠通知，然后我们可以为我们的漂亮自定义活动设置待定意图，该活动显示列表中的所有通知。用户很乐意看到这个:)

Answer 4

此功能有一种方法，您可以在通知折叠时显示一个小图标，并在通知展开时显示一个大图标。

val bitmap = BitmapFactory.decodeResource(resources, R.drawable.notification)

var notification = NotificationCompat.Builder(context, CHANNEL_ID)
    .setSmallIcon(R.drawable.new_post)
    .setContentTitle(imageTitle)
    .setContentText(imageDescription)
    .setLargeIcon(bitmap)
    .setStyle(NotificationCompat.BigPictureStyle()
            .bigPicture(bitmap)
            .bigLargeIcon(null))
    .build()

Answer 5

我无法在Notification的.setStyle（）方法中设置新的NotificationCompat.BigTextStyle（）实例。所以我在.setStyle（）中使用了下面的一个新的Notification.BigTextStyle（）实例。

      Notification builder =new Notification.Builder(this)
                    .setSmallIcon(Notification_icons[icon])
                    .setContentTitle(title)
                    .setContentText(description)
                    .setChannelId(channelID_Default)
                    .setOngoing(true)
                    .setStyle(new Notification.BigTextStyle()
                            .bigText(description))
                    .build();