在Android通知中显示多行标题

Question

I have gone through the following tutorials

1. https://developer.android.com/training/notify-user/expanded.html

2. https://developer.android.com/training/notify-user/build-notification.html

I want to show notifications with multiple line as shown in the layout below.

But I am not able to see the multiline text as shown in the image below. The first line is the title, while the second line is the body.

Here is my code to build the notification builder.

// Helper function to create NotificationChannels and a builder for the channel id.
final NotificationCompat.Builder builder = makeNotificationBuilder();
        if (builder == null)
            return null;

        final RemoteViews collapsedView = new RemoteViews(context, R.layout.notification_template);
        builder.setContent(contentView);

        // Trying to set the text
        NotificationCompat.BigTextStyle style = new NotificationCompat.BigTextStyle();
        builder.setStyle(style);
        if (notification.getTitle() != null)
            builder.setContentTitle(notification.getTitle());
            style.setBigContentTitle(notification.getTitle());
        if (notification.getBody() != null)
            builder.setContentText(notification.getBody());
            style.bigText(notification.getBody());

        . . . . . Code to set the intent.. It works 


        if (expandedView != null)
            builder.setCustomBigContentView(expandedView);

        builder.setAutoCancel(true);

        return builder.build();

Layout file

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="false"
    android:background="@drawable/notification_material_bg">

  <TextView
      android:id="@+id/notification_title"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:ellipsize="end"
      android:fadingEdge="horizontal"
      android:singleLine="false"
      android:maxLines="2"
      android:textAppearance="@style/NotificationTitle"
      tools:ignore="Deprecated"
      />

            <TextView
                android:id="@+id/notification_content"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|bottom"
                android:layout_weight="1"
                android:ellipsize="end"
                android:fadingEdge="horizontal"
                android:textAppearance="@style/NotificationText"
                tools:ignore="Deprecated"
                />


</LinearLayout>

Answer 1

You didn't set any orientation for LinearLayout .

Replace android:orientation="false" with android:orientation="vertical"