在Android屏幕上显示通知

问题描述：

我正在使用此代码发送本地通知

i am using this code for sending local notifications

mNotificationManager = (NotificationManager)
                getSystemService(Context.NOTIFICATION_SERVICE);

        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                i, PendingIntent.FLAG_ONE_SHOT);

        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(this)
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher))
                        .setContentTitle(title)
                        .setDefaults(Notification.DEFAULT_SOUND)
                        .setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(msg))
                        .setContentText(msg);

        mBuilder.setContentIntent(contentIntent);
        mNotificationManager.notify((int)value, mBuilder.build());

但是，如果通过滑动锁定电话屏幕，它们将显示在状态栏上.我想在屏幕顶部显示推送通知，例如whatsapp，facebook，短信等.

However they display on status bar if phone screen is lock by sliding. I want to show the push notifications on top of screen like whatsapp, facebook, sms messages etc.

我怎样才能做到这一点?

How can I make this possible?

答

您可以这样做:

通过添加以下行:

setPriority(Notification.PRIORITY_MAX)

完整代码:

mNotificationManager = (NotificationManager)
                getSystemService(Context.NOTIFICATION_SERVICE);

        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                i, PendingIntent.FLAG_ONE_SHOT);

        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(this)
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher))
                        .setContentTitle(title)
                        .setDefaults(Notification.DEFAULT_SOUND)
                        .setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(msg))
                        .setContentText(msg)
                        .setPriority(Notification.PRIORITY_MAX);

        mBuilder.setContentIntent(contentIntent);
        mNotificationManager.notify((int)value, mBuilder.build());

希望这会对您有所帮助.

Hope this will help you.

在Android屏幕上显示通知

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