显示白色方块而不是我的通知图标[重复]

Question

我正在尝试建立我自己的通知，当我在我的FCM接收器收到一个有效负载从我的服务器，我将我的通知图标设置为我的应用图标，这是PNG格式，然而，我的通知显示与一个白色正方形，我不知道为什么…这是我的代码：

 NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.icon)
                .setContentTitle("Your chat is going to expire tomorrow!");

        // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(this, main_activity.class);

        resultIntent.putExtra("launchedFromNotification",true);

        // The stack builder object will contain an artificial back stack for the
        // started Activity.
        // This ensures that navigating backward from the Activity leads out of
        // your app to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(main_activity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );

        mBuilder.setContentIntent(resultPendingIntent);
        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        // mNotificationId is a unique integer your app uses to identify the
        mNotificationManager.notify(MESSAGE_NOTIFICATION_ID, mBuilder.build());

Answer 1

这通常发生在使用非alpha图标时

当你在你的通知上使用图标时，android会在图标的所有非阿尔法（非透明）部分上涂漆。这意味着如果您使用正方形图像作为您的通知图标，它只会显示为一个白色的正方形。

要修复此问题，只需使用一个类似形状的图标。查看以下内容以供参考：

图标引用