蜂窝通知-如何将largeIcon设置为正确的大小? [英] Honeycomb notifications - How to set largeIcon to the right size?
问题描述
我发现自己很好奇为什么Notification.Builder上的setLargeIcon方法只接受一个位图，而没有提供资源ID的重载.也许是出于性能方面的考虑而完成的，但由于setSmallIcon确实接受res可绘制的ID，因此似乎很奇怪.
I find myself curious why the setLargeIcon method on Notification.Builder only accepts a Bitmap, with no overload to provide a resource id. Perhaps it was done for performance reasons, but it seems odd as setSmallIcon does accept a res drawable id.
Notification.Builder builder = new Notification.Builder(application);
// ....
builder.setLargeIcon(iconBitmap); // Requires a Bitmap
builder.setSmallIcon(iconResId); // Requires a drawable resource ID
Notification notification = builder.getNotification();
遗憾的是，通知中未缩放提供的位图，因此需要为通知视图提供正确大小的位图.
Sadly the bitmap provided is not scaled in the notification, so the Bitmap needs to be provided exactly the right size for the notification view.
假设我需要提供largeIcon位图的xhdpi，hdpi，mdpi和ldpi版本，它们的大小应该是多少?我看不到文档中提到的任何内容，也没有在搜索更广泛的网络后看到任何内容.
Assuming I need to provide xhdpi, hdpi, mdpi and ldpi versions of the largeIcon bitmap, what sizes do they need to be? I can see no mention in the docs, or after scouring the wider web.
推荐答案
尚未有机会对其进行检查，但是API 11引入了以下公共维度:
Not had a chance to check it yet but API 11 introduced the following public dimens:
- notification_large_icon_height
- notification_large_icon_width
在通知上设置图像之前，应该能够使用这些图像来缩放图像.
Should be able to use those to scale your image before setting it on the notification.
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