问题
I want to use a remote URL (like a favicon) for a notification icon, however the constructor for a notification accepts only a resource ID (which is an integer) instead of something more useful like a FileInputStream.
How can I either
define a new resource for a stream source
download an icon, add to my resources, and then dynamically get an ID?
回答1:
You can't do this in Android currently, because resources can only be loaded from the /res/ directory of your APK. See Resources and Internationalization. The /res/ directory is built when you create your APK and can't be changed after.
Do you expect your Icon to change often enough that you need to query a URL to ensure it is up to date every time you send a notification?
Most applications that need to change their icon would simply put an update out on the Android market.
回答2:
Since API 11 Android has had the ability to use a Bitmap for a largeIcon in notifications. This has been expanded even further in Jelly Bean to allow entire notifications to be an image, BigPictureStyle.
来源：https://stackoverflow.com/questions/2059933/setting-an-android-notification-icon-to-a-remote-url