Create Custom Big Notifications
Update due to API changes:
From API 24 on, the Notification.Builder contains a setCustomBigContentView(RemoteViews)-method. Also the NotificationCompat.Builder (which is part of the support.v4 package) contains this method.
Please note, that the documentation for the NotificationCompat.Builder.setCustomBigContentView states:
Supply custom RemoteViews to use instead of the platform template in the expanded form. This will override the expanded layout that would otherwise be constructed by this Builder object. No-op on versions prior to JELLY_BEAN.
Therefore, this will also only work for API >= 16 (JELLY_BEAN).
Original Answer
So after excessive google usage, I found this tutorial explaining how to use custom big layouts. The trick is not to use setStyle() but manually set the bigContentView field of the Notification after building it. Seems a bit hacky, but this is what I finally came up with:
notification_layout_big.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="100dp" <!-- This is where I manually define the height -->
android:orientation="horizontal" >
<!-- some more elements.. -->
</LinearLayout>
Building Notification in code:
Notification foregroundNote;
RemoteViews bigView = new RemoteViews(getApplicationContext().getPackageName(),
R.layout.notification_layout_big);
// bigView.setOnClickPendingIntent() etc..
Notification.Builder mNotifyBuilder = new Notification.Builder(this);
foregroundNote = mNotifyBuilder.setContentTitle("some string")
.setContentText("Slide down on note to expand")
.setSmallIcon(R.drawable.ic_stat_notify_white)
.setLargeIcon(bigIcon)
.build();
foregroundNote.bigContentView = bigView;
// now show notification..
NotificationManager mNotifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotifyManager.notify(1, foregroundNote);
Edit
As noted by chx101, this only works for API >= 16. I did not mention it in this answer, yet it was mentioned in the given linked tutorial above:
Expanded notifications were first introduced in Android 4.1 JellyBean [API 16].
Using Kotlin make custom notification
dialog_custom_notification
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="@dimen/dp_10"
android:background="@drawable/shape_bg_main_notification"
android:gravity="center"
android:orientation="horizontal"
android:padding="@dimen/dp_10">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top">
<ImageView
android:id="@+id/ivAppIcon"
android:layout_width="@dimen/dp_36"
android:layout_height="@dimen/dp_36"
android:layout_gravity="top"
android:background="@mipmap/ic_launcher" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:layout_marginLeft="@dimen/dp_10"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:id="@+id/tvNotificationTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Notification Tile"
android:textStyle="bold" />
<TextView
android:id="@+id/tvNotificationDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/dp_5"
android:text="Notification Description" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top">
<TextView
android:id="@+id/tvDateTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_gravity="top"
android:text="09:50" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
shape_bg_main_notification
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@color/white" />
<corners android:radius="@dimen/dp_6" />
</shape>
@SuppressLint("WrongConstant")
fun showOfflineNotification(context: Context, title: String, description: String) {
val NOTIFICATION_CHANNEL_ID = "com.myapp"
val intent = Intent(context, HomeActivity::class.java)
intent.putExtra("notification", 1)
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
if (intent != null) {
val pendingIntent = PendingIntent.getActivity(
context, getTwoDigitRandomNo(), intent,
PendingIntent.FLAG_ONE_SHOT
)
val defaultSoundUri =
RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
val remoteCollapsedViews = RemoteViews(packageName, R.layout.dialog_custom_notification)
remoteCollapsedViews.setTextViewText(R.id.tvNotificationTitle, title)
remoteCollapsedViews.setTextViewText(R.id.tvNotificationDescription, description)
remoteCollapsedViews.setTextViewText(R.id.tvDateTime, getTime())
val notificationBuilder = NotificationCompat.Builder(context)
notificationBuilder.setCustomBigContentView(remoteCollapsedViews)
notificationBuilder.setSmallIcon(R.mipmap.ic_launcher_round)
notificationBuilder.setLargeIcon(
BitmapFactory.de
codeResource(
context.resources,
R.mipmap.ic_launcher
)
)
notificationBuilder.setBadgeIconType(R.mipmap.ic_launcher_round)
notificationBuilder.setContentTitle(title)
if (description != null) {
notificationBuilder.setContentText(description)
notificationBuilder.setStyle(
NotificationCompat.BigTextStyle().bigText(description)
)
}
notificationBuilder.setPriority(NotificationCompat.PRIORITY_HIGH)
notificationBuilder.setAutoCancel(true)
notificationBuilder.setSound(defaultSoundUri)
notificationBuilder.setVibrate(longArrayOf(1000, 1000))
notificationBuilder.setContentIntent(pendingIntent)
val notificationManager =
context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val importance = NotificationManager.IMPORTANCE_MAX
val notificationChannel = NotificationChannel(
NOTIFICATION_CHANNEL_ID,
"NOTIFICATION_CHANNEL_NAME",
importance
)
notificationChannel.enableLights(true)
notificationChannel.lightColor = Color.RED
notificationChannel.enableVibration(true)
notificationChannel.vibrationPattern = longArrayOf(1000, 1000)
assert(notificationManager != null)
notificationBuilder.setChannelId(NOTIFICATION_CHANNEL_ID)
notificationManager.createNotificationChannel(notificationChannel)
}
notificationManager.notify(
getTwoDigitRandomNo()/*Id of Notification*/,
notificationBuilder.build()
)
}
}
private fun getTime(): String {
val calendar = Calendar.getInstance()
val mdformat = SimpleDateFormat("HH:mm")
val strDate = mdformat.format(calendar.time)
return strDate
}
fun getTwoDigitRandomNo(): Int {
return Random().nextInt(90) + 10
}
[1]: https://me.stack.imgur.com/rQFP8.png
[1]: https://me.stack.imgur.com/fKM9C.png