如何在棒棒糖和Android M中未显示正确的小图标以进行通知

Question

I am creating an application, I am able to display notification properly, but small icon is not getting displayed as I have mentioned it in the drawable folder, The icon is getting masked with white color. Can any one help me, how can I get the icon to display properly.

Below is my notification code:

nb = new NotificationCompat.Builder(context)
        .setContentTitle(contentTitle)
        .setContentText(contentText)
        .setSmallIcon(icon)
        .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.micon_notification))
        .setWhen(when)
        .setContentIntent(contentIntent)
        .setAutoCancel(true)
        .setOnlyAlertOnce(true)
        .setTicker(tickerText)
        .setColor(Color.RED);

The icon mentioned in drawable is as shown below:

[1]: http://i.stack.imgur.com/ggYCY.png

That complete red color present inside the image is getting vanished and icon is getting displayed with complete white color. All suggestions are welcome.

Answer 1

This is the code Android uses to display notification icons:

if (entry.targetSdk >= Build.VERSION_CODES.LOLLIPOP) {
    entry.icon.setColorFilter(mContext.getResources().getColor(android.R.color.white));
} else {
    entry.icon.setColorFilter(null);
}

For that you've to make icon like Silhouette and make some section Transparent wherever you wants to add your Colors.

You can add your color using

.setColor(your_color_resource_here)

NOTE : setColor is only available in Lollipop so, you've to check OSVersion

if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
    Notification notification = new Notification.Builder(context)
    ...
} else {
    // Lollipop specific setColor method goes here.
    Notification notification = new Notification.Builder(context)
    ...
    notification.setColor(your_color)
    ...            
}

Look at the documentation: http://developer.android.com/design/style/iconography.html

there are words:

"Notification icons must be entirely white. Also, the system may scale down and/or darken the icons."

I hope it helps!