安卓通知 : add typeface for title and content

Question

我正在尝试在我的 NotificationCompat.Builder 中添加一个 Typeface ->setContentTitle() 和 setContentText()。我通过

初始化了 Typeface

Typeface banglaFont = Typeface.createFromAsset(this.getAssets(), "kalpurush.ttf");

在 IntentService 中。为了创建 Notification，我使用了以下代码。

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
                this)
                .setLargeIcon(bitmap)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle(userName)

                .setAutoCancel(true)
                // .setStyle(
                // new NotificationCompat.BigTextStyle().bigText(msg))
                .setStyle(new NotificationCompat.InboxStyle())
                .setVibrate(pattern).setLights(Color.BLUE, 500, 500)
                .setSound(alarmSound).setContentText(msg);
        mBuilder.setContentIntent(contentIntent);
        Notification n = mBuilder.build();

        int min = 1001;
        int max = 2000;

        Random r = new Random();
        int randomNumber = r.nextInt(max - min + 1) + min;
        int notID = randomNumber;
        mNotificationManager.notify(notID, n);

但我不明白如何在我的Notification 标题和内容中设置Typeface。任何建议或引用将不胜感激。提前致谢。

Answer 1

在通知上设置字体的最佳方法是将文本转换为位图并在 Canvas 中渲染。为了渲染自定义通知，我们希望使用远程 View 。

custome_notification.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="3dp"
    android:orientation="horizontal"
    >
    <ImageView android:id="@+id/logo"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_marginRight="1dp"
        android:src="@drawable/ic_launcher"/>
    <ImageView android:id="@+id/notification_img"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_marginRight="1dp" />

</LinearLayout>




public void showCustomNotifications(Context context, String text){
   DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
   int width = displayMetrics.widthPixels;


   Bitmap myBitmap = Bitmap.createBitmap(width - 72, 84, Bitmap.Config.ARGB_4444);
   Canvas myCanvas = new Canvas(myBitmap);
   Paint paint =  new Paint();
   Typeface font2 = Typeface.createFromAsset(context.getAssets(), context.getResources().getString(R.string.sinhalaFont));
   paint.setAntiAlias(true);
   paint.setSubpixelText(true);
   paint.setTypeface(font2);
   paint.setStyle(Paint.Style.FILL);
   //paint.setColor(Color.BLACK);
   paint.setTextSize(50);
   paint.setTextAlign(Align.LEFT);
   myCanvas.drawText(text, 80, 60, paint);



   int icon = R.drawable.ic_launcher;
   // create new id
   Date date = new Date();
   int notificationid = (int) date.getTime();
   long when = System.currentTimeMillis();
   NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
   Notification notification = new Notification(icon, "Anynews", when);
   //String title = getString(R.string.app_name);
   Intent notificationIntent = new Intent(context, MainActivity.class);
   // set intent so it does not start a new activity
   notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
        | Intent.FLAG_ACTIVITY_SINGLE_TOP);
   PendingIntent intent = PendingIntent.getActivity(context,
        notificationid, notificationIntent, 0);
   RemoteViews contentView = new RemoteViews(context.getPackageName(),
        R.layout.custom_notification);
   contentView.setImageViewBitmap(R.id.notification_img,
        myBitmap);
   // contentView.setTextViewText(R.id.notification_title,
   // "My custom notification title");
   //contentView.setTextViewText(R.id.notification_text, message);
   notification.contentView = contentView;
   notification.contentIntent = intent;
   // notification.setLatestEventInfo(context, title, message, intent);
   notification.flags |= Notification.FLAG_AUTO_CANCEL;
   notificationManager.notify(notificationid, notification);
}