gistfile1.java

private void sendNotification() {
        int notificationId = 001;
        //決定這個notification的辨識編號

        Bitmap bitmap = BitmapFactory.decodeResource(getResources() , R.drawable.a1);
        //取得要發送的圖片

        NotificationCompat.BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
        bigPictureStyle.bigPicture(bitmap);
        //創建一個BigPictureStyle物件，並設定要傳送的圖片

        NotificationCompat.Builder notifcaition =
                new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("標題")
                .setContentText("我是小狗")
                .setStyle(bigPictureStyle);
        //最後在setStyle，將剛才的創建一個BigPictureStyle物件物件丟入即可

        NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(this);
        //取得NotificationManagerCompat的實體

        notificationManagerCompat.notify(notificationId , notifcaition.build());
        //填入辨識編號及notification後，即可發送出去
}